CN109495175A - A kind of satellite-based laser communication system - Google Patents
A kind of satellite-based laser communication system Download PDFInfo
- Publication number
- CN109495175A CN109495175A CN201811321887.9A CN201811321887A CN109495175A CN 109495175 A CN109495175 A CN 109495175A CN 201811321887 A CN201811321887 A CN 201811321887A CN 109495175 A CN109495175 A CN 109495175A
- Authority
- CN
- China
- Prior art keywords
- communications platform
- satellite
- platform
- communications
- communication link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Optical Communication System (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
The present invention relates to a kind of satellite-based laser communication systems, it include: satellite communication network, the first and second communications platforms, first communications platform includes the first ATP device, second communications platform includes the 2nd ATP device, wherein, the carrier of a side or a side in first and second communications platforms can move in the sky in the carrier of another party or another party in land face perhaps the first and second communications platform of water surface movable；According to the posture and position of the posture of the first determining communications platform and position and the second communications platform, laser communication link is established between the first communications platform and the second communications platform, and the laser communication link by establishing between the first communications platform and the second communications platform transmits data between the first communications platform and the second communications platform.The present invention can quickly establish laser communication link and be communicated between two moveable platforms.
Description
Technical field
The present invention relates to satellite communication field more particularly to a kind of satellite-based laser broadcast communication systems.
Background technique
Satellite communication is the combination of space flight, communication, information and new material technology, is one of world's high-quality precision and sophisticated technology,
Information age, it embodied country in the comprehensive strength of high-technology field.Satellite communication industry is as the important of ICT industry
Component part in national information infrastructure construction, is realized in universal service, creation harmonious information society and National Security Strategy
It plays an increasingly important role.
Currently, satellite-based laser communication system is led to earth station or aircraft to earth station's foundation in satellite
Letter system.For example, the Chinese patent literature of Publication No. CN107707297A discloses a kind of airborne laser communication system, it is special
Sign is: including at least one onboard system, being installed on satellite, including optical transmitter and receiver and electric cabinet；At least one airborne system,
It is installed on aircraft, including optical transmitter and receiver, electric cabinet, the bracket for installing the optical transmitter and receiver and electric cabinet；And at least one
A ground system is set to ground, including optical transmitter and receiver and electric cabinet；The onboard system for realizing with airborne system and ground
The two-way laser of plane system communicates；The onboard system, airborne system and ground system include the positioning for being initially directed toward
System, and the optical transmitter and receiver of the onboard system, airborne system and ground system includes communication transmitting module, communications reception mould
Block, capture aim at tracking module and optical antenna；The light that the communication transmitting module issues aims at tracking module by capture
It is issued afterwards by optical antenna；The light that optical antenna receives by capture aim at tracking module after by communication receipt module into
Row receives；The capture aims at foundation and the guarantor of the laser communication link between tracking module realization and the optical transmitter and receiver of communication counterpart
It holds.But this application be not useful in one can be in the equipment of land face or water surface movable and the equipment room that can be moved in the sky
Establish communication.Because the posture of the two and position may be variation, and two sides to be communicated may not know other side institute
The position at place.Therefore, it is necessary to improve the prior art to solve how in this case fast run-up therebetween
The problem of vertical laser communication link.
Summary of the invention
For the deficiencies of the prior art, the present invention provides a kind of satellite-based laser communication system, the present invention passes through
First communications platform establishes laser communication link with the first satellite first to determine posture and the position of the first communications platform, and allows the
One satellite assist in scanning searches for the second communications platform in uncertain region, determines posture and the position of the second communications platform, so
It is flat in the first communication afterwards using the posture of the first determining communications platform and the posture and position of position and the second communications platform
Laser communication link is quickly established between platform and the second communications platform.
According to a preferred embodiment, a kind of satellite-based laser communication system, comprising: several satellite compositions are defended
Star communication network, the first communications platform and the second communications platform, the first communications platform include the first ATP device, and the second communication is flat
Platform includes the 2nd ATP device, wherein the carrier of a side or a side in the first communications platform and the second communications platform can be in lands
Perhaps the first communications platform of water surface movable and the carrier of another party or another party in the second communications platform can move in the sky in face
It is dynamic；When the first communications platform is attempted to communicate with the second communications platform foundation in undefined position, the first communications platform hair
Penetrating laser beam and being directed toward has the first satellite of known location to request the laser established between the first communications platform and the first satellite
Communication link establishes laser communication link and is based at least partially on the first ATP later between the first communications platform and the first satellite
Device determines posture and the position of the first communications platform, and the laser beam flying of the first satellite is located at the second communication of uncertain region
Platform is until laser beam is irradiated to the second communications platform and requests to establish laser between the first satellite and the second communications platform logical
Believe link, laser communication link is established between the first satellite and the second communications platform and is based at least partially on the 2nd ATP dress later
The posture for determining the second communications platform and position are set, is communicated according to the posture of the first determining communications platform and position and second
The posture of platform and position establish laser communication link between the first communications platform and the second communications platform, and pass through first
The laser communication link established between communications platform and the second communications platform is between the first communications platform and the second communications platform
Transmit data.
According to a preferred embodiment, laser communication link is established between the first communications platform and the second communications platform
Posture and the position for completing at least one of determining first communications platform and second communications platform before complete to determine that first is logical
Believe that platform does not determine the second communications platform or first of posture and position after the posture of the second communications platform and position perhaps
Communications platform is towards the first communications platform for having determined that posture and position or the transmitting laser beam flying of the second communications platform to attempt
Establish the laser communication link between the first communications platform and the second communications platform.
According to a preferred embodiment, in the second communications platform or the first communications platform for not determining posture and position
Towards the first communications platform for having determined that posture and position or the second communications platform transmitting laser beam to attempt to establish the first communication
During laser communication link between platform and the second communications platform, do not determine posture and position the second communications platform or
The determination process of the first communications platform of person does not terminate until attempting to establish swashing between the first communications platform and the second communications platform
Optical communication link is successful or the system determines the second communications platforms or the first communications platform that do not determine posture and position
Posture and position.
According to a preferred embodiment, the first communications platform further includes the 3rd ATP device, and the second communications platform further includes
4th ATP device, after establishing laser communication link between the first communications platform and the second communications platform, the first the select of satellite
Property disconnect its laser communication link established between the first communications platform and/or the second communications platform, and it is logical first
After letter at least one of platform and the second communications platform disconnect the laser communication link that it is established with the first satellite, first is logical
Mutual appearance is determined at least partially through the 3rd ATP device and the 4th ATP device between letter platform and the second communications platform
State and position.
According to a preferred embodiment, it is logical with the first communications platform and/or second to disconnect to the first the select of satellite it
The processing for the laser communication link established between letter platform includes: to establish to swash between the first communications platform and the second communications platform
After optical communication link, the first satellite analyzes the mobility of the first communications platform and the second communications platform；First satellite is according to
The mobility of one communications platform and the second communications platform selects a kind of mode from following manner and executes: in the first communications platform
With the second communications platform when relatively ball is in moving condition, the holding of the first satellite is communicated with the first communications platform and second
The laser communication link that platform is established；An opposite earth in the first communications platform and the second communications platform is in static shape
When state, the first satellite disconnects the laser that it is established with the first communications platform to remain static or the second communications platform and leads to
Believe link；When relatively ball remains static for the first communications platform and the second communications platform, the first satellite disconnects it
The laser communication link established with the first communications platform and the second communications platform.
According to a preferred embodiment, the first satellite disconnect its with the first communications platform to remain static or
Before the laser communication link that second communications platform is established, it need to be communicated to the first communications platform to remain static or second
Platform sends the request for disconnecting laser communication link；In response to the request for disconnecting laser communication link, the first communications platform
With at least one of the second communications platform based on geography information model and trajectory predictions anticipation after it has been broken first default
The disconnection for the laser communication link established between the first communications platform and the second communications platform in duration；When the first communication is flat
At least one of platform and the second communications platform are based on geography information model and trajectory predictions anticipation after it has been broken first pre-
If the disconnection times for the laser communication link established between the first communications platform and the second communications platform in duration are more than or equal to pre-
If the first communications platform to remain static when frequency threshold value or the second communications platform refuse the request of the first satellite；
When at least one of the first communications platform and the second communications platform are disconnected based on geography information model and trajectory predictions anticipation
The disconnection time for the laser communication link established between the first communications platform and the second communications platform in the first preset duration later
When number is less than preset times threshold value, the first communications platform to remain static or the second communications platform receive the first satellite
Request.
According to a preferred embodiment, it is based at least partially on the posture that the first ATP device determines the first communications platform
Processing with position includes: the position that the first satellite is obtained from almanac data and/or registration table, obtains the first communications platform
Speed and geo-location obtain the position of the first satellite of the first ATP device observation, are based on from almanac data and/or registration table
The position of first satellite of middle acquisition, the speed of the first communications platform obtained and geo-location and the first ATP of acquisition dress
The position for setting the first satellite of observation calculates posture and the position of the first communications platform: and/or it is based at least partially on the 2nd ATP
Device determines the posture of the second communications platform and the processing of position includes: to obtain first from almanac data and/or registration table to defend
The position of star obtains the speed and geo-location of the second communications platform, obtains the position of the first satellite of the 2nd ATP device observation
Set, position based on the first satellite obtained from almanac data and/or registration table, the second communications platform obtained speed and
The position of geo-location and the first satellite of the 2nd ATP device of acquisition observation calculates posture and the position of the second communications platform
It sets.
According to a preferred embodiment, being directed toward in the first communications platform transmitting laser beam has the first of known location to defend
Before star is to request to establish the laser communication link between the first communications platform and the first satellite, the first communications platform is from ephemeris number
According to or registration table in select the first satellite, the first satellite of selection is in the first ATP of the first communications platform when selection
In the 10mrad visual field of device.
According to a preferred embodiment, laser communication is successfully established between the first communications platform and the second communications platform
Before link, the absolute pose and direction second of the first communications platform are established by using the first ATP device and the 3rd ATP device
The absolute of communications platform is directed toward to compensate the beam drift of the laser beam of the first communications platform transmitting；And/or it is flat in the first communication
It is successfully established before laser communication link between platform and the second communications platform, by using the 2nd ATP device and the 4th ATP device
Establish the absolute pose of the second communications platform and towards the absolute direction of the first communications platform to compensate the transmitting of the second communications platform
Laser beam beam drift.
According to a preferred embodiment, the system also includes several earth stations, the first satellite can call several defend
At least one earth station at least one satellite and/or several earth stations in star is located at uncertain region with laser beam flying
The second communications platform until one of satellite or an earth station are irradiated to the second communications platform with laser beam and notify
Thus first satellite, the first satellite irradiate the second communications platform with laser beam to build between the first satellite and the second communications platform
Vertical laser communication link.
Detailed description of the invention
Fig. 1 is the rough schematic view of a preferred embodiment of the present invention；With
Fig. 2 is the rough schematic view of another preferred embodiment of the present invention.
Reference signs list
100: the first communications platform, 110: the one ATP device
120: the three ATP device, 200: the second communications platform
210: the two ATP device, 220: the four ATP device
300: 310: the first satellite of satellite
320: the second satellites 400: earth station
410: microwave station 420: optics station
Specific embodiment
It 1 and 2 is described in detail with reference to the accompanying drawing.
In the description of the present invention, it is to be understood that, it if there are the terms such as " first ", " second ", is only used for describing
Purpose is not understood to indicate or imply relative importance or implicitly indicates the quantity of indicated technical characteristic.As a result,
Define " first ", the feature of " second " can explicitly or implicitly include one or more of the features.In the present invention
Description in, if there are term " multiple ", be meant that two or more, unless otherwise specifically defined.
Embodiment 1
The present embodiment also discloses a kind of communication means, is also possible to a kind of laser communication method, is also possible to a kind of base
In the laser communication method of satellite, it is also possible to a kind of satellite-based space-to-ground laser communications method, this method can be by this hair
Bright system and/or other alternative components are realized.For example, real by using each components in system of the invention
Existing method of the invention.
According to a preferred embodiment, this method can be used in system of the invention.This method may include:
When one communications platform 100 is attempted to communicate with the second communications platform 200 foundation in undefined position, the first communications platform 100
Laser beam can be emitted be directed toward has the first satellite 310 of known location to request to establish the first communications platform 100 and defend with first
Laser communication link between star 310.It is established after laser communication link between first communications platform 100 and the first satellite 310
Posture and position that the first ATP device 110 determines the first communications platform 100 can be based at least partially on.First satellite 310 can
To be located at the second communications platform 200 of uncertain region with laser beam flying until laser beam irradiates the second communications platform 200.The
Laser communication link is established between one satellite 310 and the second communications platform 200 can be based at least partially on the 2nd ATP dress later
Set the posture and position that 210 determine the second communications platform 200.Preferably, according to the posture of the first determining communications platform 100 and
The posture and position of position and the second communications platform 200 are built between the first communications platform 100 and the second communications platform 200
Vertical laser communication link.Preferably, the laser communication by being established between the first communications platform 100 and the second communications platform 200
Link transmits data between the first communications platform 100 and the second communications platform 200.Preferably, the first communications platform 100 and
The carrier of a side or a side in two communications platforms 200 can be in land face or water surface movables.First communications platform 100 and second
The carrier of another party or another party in communications platform 200 can move in the sky.For example, the first communications platform 100 and second
A side in communications platform 200 can be at least one of land vehicle, ship and portable unit.First communications platform 100
It for example can be aircraft, rocket, helicopter and unmanned plane with the carrier of another party or another party in the second communications platform 200
At least one of.Preferably, the present invention in because laser space communication it is point-to-point establish laser communication link unlike
Fiber optic communication equally has high success rate, thus attempt establish can be adjustment laser beam flying direction in the case where seek with it is right
The mode of Fang Jianli laser communication.
Preferably, ATP can refer to Acquisition, Tracking and Pointing, i.e. acquisition and tracking and aiming.
Preferably, ATP device can also be known as APT device, capture aims at tracker, acquisition and tracking and sighting system, aim at capture with
Track device and/or acquisition and tracking and sighting device.For example, by taking earth station 400 and satellite as an example, in order to satellite 300 with defend
Reliable communication is realized between star 300 or between satellite 300 and other communication equipments, requires a satellite 300 that can capture first
The light beam that another satellite 300 or earth station 400 send, referred to as beacon beam, and the light beam is converged into detector or antenna
Center, this process, which is referred to as, captures or captures body.After the completion of capture, the satellite 300 as recipient will also issue a light beam,
It is required that the light beam can accurately be directed toward issue beacon beam another satellite 300 or earth station 400, this process be referred to as be directed toward or
Person aims at.After the satellite 300 of sending beacon beam receives this light beam, acquisition procedure is also correspondingly completed, can just make two to defend
Star 300 or satellite 300 and earth station 400 are finally reached communication connection status.For guarantee this two satellites 300 or satellite 300 with
Earth station 400 is constantly in communications status, it is necessary to be always maintained at this accurate connection status, this process be referred to as track or with
Track mouth.
Preferably, there are many mathematical expression methods for the posture for determining object and position, such as can be with Eulerian angles, Euler-sieve
At least one of Delhi lattice parameter, Rodrigo-jeep this vector, quaternary number and dual quaterion.
Preferably, optical frequency comb and pump signal are generated at 300 transmitter of satellite；Modulating light frequency is combed at transmitter
Idle signal to generate data-signal and the phase conjugation as data-signal；Decay pump signal at transmitter；From defending
Star 300 sends the signal of communication with data-signal, idle signal and pump signal by free space；From defending at receiver
Star 300 receives transmitted signal of communication, which has data-signal, idle signal and the pump signal of decaying；?
Amplification data signal and idle signal at phase-sensitive amplifier in receiver；Demodulated data signal and idle signal at receiver
To extract data.
According to a preferred embodiment, it is logical that laser is established between the first communications platform 100 and the second communications platform 200
The posture and position of at least one of determining first communications platform 100 and second communications platform 200 are completed before believing link.It is complete
After the posture and position for determining the first communications platform 100 or the second communications platform 200, the of posture and position is not determined
Two communications platforms 200 or the first communications platform 100 can be towards the first communications platforms 100 for having determined that posture and position or
Two communications platforms 200 emit laser beam flying to attempt to establish swashing between the first communications platform 100 and the second communications platform 200
Optical communication link.Preferably, in the second communications platform 200 or the first communications platform 100 for not determining posture and position towards
Determine that the first communications platform 100 or the second communications platform 200 transmitting laser beam of posture and position are logical to attempt to establish first
During believing the laser communication link between platform 100 and the second communications platform 200, do not determine that the second of posture and position is logical
The determination process of letter platform 200 or the first communications platform 100 can not terminate until attempting to establish 100 He of the first communications platform
Laser communication link between second communications platform 200 is successful or the system determines do not determine that the second of posture and position leads to
Believe posture and the position of platform 200 or the first communications platform 100.The present invention at least can be realized following beneficial using this mode
Technical effect: first, although not determining that another party of position determines posture and position not over ATP device, it passes through
Locating module can determine a little postures and location information of a posture and position rather rough more determining than ATP device, thus
It is communicated to attempt to establish, therefore the present invention can take additional ways to attempt to shorten swashing between two moveable communications platforms
The settling time of optical communication link because the present invention is when establishing laser communication link, have determined that in the position of a wherein side and
In the undetermined situation in the position of another party, when not determining that another party of position determines the free time of its posture and position using system
Between, to have determined that posture and position a side send laser beam flying to attempt to establish laser communication link, trial and success is then fast
The vertical communication of run-up；Second, even with attempt to failure, after the posture of another party and position are determined, also can use between the two
Both fixed posture and position communicates to establish.
Preferably, in posture and the position for being based at least partially on determining first communications platform 100 of the first ATP device 110
Later, the open loop that can be started by the first communications platform 100 to the second communications platform 200 is searched for.Preferably, initial second
Can not have the step of staring search in the open loop search process of preset duration.
According to a preferred embodiment, the first communications platform 100 may include the 3rd ATP device 120.Second communication is flat
Platform 200 may include the 4th ATP device 220.It is logical that laser is established between the first communications platform 100 and the second communications platform 200
After believing link, itself and the first communications platform 100 and/or the second communications platform 200 are disconnected to 310 property of can choose of the first satellite
Between the laser communication link established.At least one of the first communications platform 100 and the second communications platform 200 disconnect its with
It can be down to after the laser communication link that first satellite 310 is established, between the first communications platform 100 and the second communications platform 200
Mutual posture and position are determined at least partially through the 3rd ATP device 120 and the 4th ATP device 220.The present invention uses this
Mode at least can be realized following advantageous effects: first, between the first communications platform 100 and the second communications platform 200
It directly establishes after laser communication link, the two can determine posture and position each other accordingly and not have to again by defending with first
Star 310 establishes laser communication link to realize, therefore, the present invention using this mode can be greatly reduced the later period computing cost and
Energy consumption；Second, due to satellite 300 carry resource be it is limited and valuable, a part of equipment can be discharged after disconnecting and is accounted for
With thus more efficiently providing service using system resource and for more equipment.
Preferably, the first communications platform 100, the second communications platform 200 or the first satellite 310 in the present invention can be adopted
Laser communication link is established at least one of green laser, Lan Jiguang, bluish-green laser and red laser laser.For example, first is logical
Believe the laser communication link that platform 100 and the first satellite 310 are established, the number that the first communications platform 100 is sent to the first satellite 310
According to uplink can use green laser, the first satellite 310 can be with to the downlink that the first communications platform 100 sends data
Using red laser.
According to a preferred embodiment, the first satellite 310 selectively disconnect its with the first communications platform 100 and/or
The processing for the laser communication link established between second communications platform 200 may include:
After establishing laser communication link between the first communications platform 100 and the second communications platform 200, the first satellite 310
Analyze the mobility of the first communications platform 100 and the second communications platform 200；
First satellite 310 is selected according to the mobility of the first communications platform 100 and the second communications platform 200 from following manner
It selects a kind of mode and executes:
First satellite 310 keeps the laser communication link established with the first communications platform 100 and the second communications platform 200；
First satellite 310 disconnects its laser communication chain established with the first communications platform 100 or the second communications platform 200
Road；And/or
First satellite 310 disconnects its laser communication chain established with the first communications platform 100 and the second communications platform 200
Road.
Preferably, when relatively ball is in moving condition for the first communications platform 100 and the second communications platform 200,
First satellite 310 can keep the laser communication link established with the first communications platform 100 and the second communications platform 200.?
When an opposite earth in one communications platform 100 and the second communications platform 200 remains static, the first satellite 310 can
To disconnect the laser communication link that it is established with the first communications platform 100 to remain static or the second communications platform 200.
When relatively ball remains static for the first communications platform 100 and the second communications platform 200, the first satellite 310 can be with
Disconnect its laser communication link established with the first communications platform 100 and the second communications platform 200.
Preferably, it is disconnected in the first satellite 310 to communicate with the first communications platform 100 to remain static or second
It, need to be flat to the first communications platform 100 to remain static or the second communication before the laser communication link that platform 200 is established
Platform 200 sends the request for disconnecting laser communication link.In response to the request for disconnecting laser communication link, the first communications platform
100 and second at least one of communications platform 200 can be based on geography information model and trajectory predictions anticipation after it has been broken
The first preset duration in the disconnection of laser communication link established between the first communications platform 100 and the second communications platform 200
Situation.When at least one of the first communications platform 100 and the second communications platform 200 are based on geography information model and trajectory predictions
The laser established between the first communications platform 100 and the second communications platform 200 in the first preset duration of anticipation after it has been broken
When the disconnection times of communication link are more than or equal to preset times threshold value, the first communications platform 100 for remaining static or
Second communications platform 200 can refuse the request of the first satellite 310.When in the first communications platform 100 and the second communications platform 200
At least one is flat based on the first communication in geography information model and trajectory predictions anticipation the first preset duration after it has been broken
When the disconnection times for the laser communication link established between platform 100 and the second communications platform 200 are less than preset times threshold value, place
It can receive the request of the first satellite 310 in the first communications platform 100 of stationary state or the second communications platform 200.It is preferred that
Ground, geography information model, that is, GIS model.The ground that the system can be acquired according at least partly satellite 300 in several satellites 300
Information is managed to draw and/or update geography information model.The system can also be according at least partly satellite in several satellites 300
The cloud layer information of 300 acquisitions that cloud layer model is drawn and/or updated on geography information model.Preferably, cloud layer model can also
For prejudging disconnection.
Preferably, the first satellite 310 can be based on the communication between the first communications platform 100 and the second communications platform 200
Reliability and/or the bit error rate selectively disconnect it and establish between the first communications platform 100 and/or the second communications platform 200
Laser communication link.Preferably, the first satellite 310 can be detected by geographical conditions, meteorological condition, the 3rd ATP device 120
To the second communications platform 200 transmitting laser beam beam drift degree and the 4th ATP device 220 detect first communication
The beam drift degree for the laser beam that platform 100 emits analyzes communication reliability.
Preferably, posture and position that the first ATP device 110 determines first communications platform 100 are based at least partially on
Processing may include: the position that the first satellite 310 is obtained from almanac data and/or registration table, obtain the first communications platform 100
Speed and geo-location, obtain the position of the first satellite 310 of the first ATP device 110 observation, and/or based on from ephemeris number
According to and/or registration table in obtain the first satellite 310 position, obtain the first communications platform 100 speed and geo-location
And the position of the first satellite 310 of the first ATP device 110 observation obtained calculates posture and the position of the first communications platform 100
It sets.
Preferably, posture and position that the 2nd ATP device 210 determines second communications platform 200 are based at least partially on
Processing may include: the position that the first satellite 310 is obtained from almanac data and/or registration table, obtain the second communications platform 200
Speed and geo-location, obtain the position of the first satellite 310 of the 2nd ATP device 210 observation, and/or based on from ephemeris number
According to and/or registration table in obtain the first satellite 310 position, obtain the second communications platform 200 speed and geo-location
And the position of the first satellite 310 of the 2nd ATP device 210 observation obtained calculates posture and the position of the second communications platform 200
It sets.
According to a preferred embodiment, the first communications platform is determined being based at least partially on the first ATP device 110
100 posture and position and posture and the position for being based at least partially on determining second communications platform 200 of the 2nd ATP device 210
After setting, the first communications platform 100 and the second communications platform 200 can send laser beam opposite to each other to establish the first communications platform
100 and the second laser communication link between communications platform 200.Preferably, the first communications platform 100 and the second communications platform
200 send laser beam opposite to each other by open loop approach to establish the first communications platform 100 and the second communications platform 200 in 9 seconds
Between laser communication link.
According to a preferred embodiment, being directed toward in the first communications platform 100 transmitting laser beam has the of known location
Before one satellite 310 is to request to establish the laser communication link between the first communications platform 100 and the first satellite 310, first is logical
Letter platform 100 selects the first satellite 310 from almanac data or registration table, and the first satellite 310 of selection is when selection
In in the 10mrad visual field of the first ATP device 110 of the first communications platform 100, in particularly preferred 4mrad visual field.Preferably, fly
When row device 100 selects the first satellite 310 from almanac data or registration table, assessment and the satellite in 4 or 10mrad visual field
The settling time for establishing laser communication link selects the satellite of corresponding shortest settling time as the first satellite 310.It is excellent
Selection of land, the first satellite 310 can be synchronous satellite, be also possible to asynchronous satellite.Preferably, the situation identical in settling time
Under, preferentially select asynchronous satellite as the first satellite 310, the second choice of opimization synchronous satellite is as the first satellite.
According to a preferred embodiment, laser is successfully established between the first communications platform 100 and the second communications platform 200
Before communication link, the first communications platform 100 can be established by using the first ATP device 110 and the 3rd ATP device 120
Absolute pose and the light that the laser beam of the first communications platform 100 transmitting is compensated towards the absolute direction of the second communications platform 200
Beam drift.Preferably, before being successfully established laser communication link between the first communications platform 100 and the second communications platform 200,
The absolute pose and direction of the second communications platform 200 can be established by using the 2nd ATP device 210 and the 4th ATP device 220
The absolute of first communications platform 100 is directed toward to compensate the beam drift of the laser beam of the second communications platform 100 transmitting.Preferably,
Since laser is influenced by factors such as the thermal deformation of itself, ambient vibration and air agitations, the laser beam of outgoing is being propagated
Drift can be often generated in the process, limits further increasing for laser alignment precision, and this drift is just called beam drift.
Embodiment 2
The present embodiment can be the further improvement and/or supplement to embodiment 1, and duplicate content repeats no more.Not
It causes in conflict or contradictory situation, the entirety and/or partial content of the preferred embodiment of other embodiments can be used as
The supplement of the present embodiment.
According to another preferred embodiment, laser is established between the first communications platform 100 and the second communications platform 200
After communication link, the first satellite 310 can keep establishing between the first communications platform 100 and/or the second communications platform 200
Laser communication link until data between the first communications platform 100 and the second communications platform 200 are transmitted.First satellite
310 can identify the link state for the laser communication link established between the first communications platform 100 and the second communications platform 200 with
And the transmission state of data is transmitted by the laser communication link.Transmission state be unfinished state and link state be can not
In the case where with state, the first satellite 310 can send to the first communications platform 100 and the second communications platform 200 and assist transmission
The request of data.Receive the assistance transmission of the first satellite 310 transmission in the first communications platform 100 and the second communications platform 200
After the request of data, the first communications platform 100 and the second communications platform 200 can pass through the first communications platform 100 and first
The laser communication link that the laser communication link and the first satellite 310 and the second communications platform 200 that satellite 310 is established are established passes
Transmission of data.Preferably, at least one of the first communications platform 100 and the second communications platform 200 send the to the first satellite 310
The link state for the laser communication link established between one communications platform 100 and the second communications platform 200 and pass through the laser
The transmission state of communication link data.
Preferably, the laser communication link established between the first communications platform 100 and the second communications platform 200 is in not
It, can be at least partially through the first satellite between the first communications platform 100 and the second communications platform 200 after available mode
310 determine mutual posture and position, and can attempt to re-establish the first communications platform 100 and the second communications platform accordingly
Laser communication link between 200.
According to a preferred embodiment, the first communications platform 100 and the second communications platform 200 pass through the first communications platform
100 and second when the laser communication link transmission data established between communications platform 200, can using plain code transmission data or
Person's cipher mode transmits data.First communications platform 100 and the second communications platform 200 pass through the first communications platform 100 and first
The laser communication link that the laser communication link and the first satellite 310 and the second communications platform 200 that satellite 310 is established are established passes
When transmission of data, data are transmitted using cipher mode, and the first communications platform 100 and the second communications platform 200 be not to the
The code key of data is transmitted in the transmission of one satellite 310 for decrypting between the first communications platform 100 and the second communications platform 200.
It is flat by the first communication in the first communications platform 100 and the second communications platform 200 according to a preferred embodiment
When the laser communication link transmission data established between platform 100 and the second communications platform 200, the first Encryption Algorithm can be used
Encrypted transmission data.Pass through the first communications platform 100 and the first satellite in the first communications platform 100 and the second communications platform 200
The laser communication link that 310 laser communication links established and the first satellite 310 and the second communications platform 200 are established transmits number
It, can be using the second Encryption Algorithm encrypted transmission data different from the first Encryption Algorithm when.Preferably, the first encryption is calculated
Second calculation amount of first calculation amount of method less than the second Encryption Algorithm.It is highly preferred that the first Encryption Algorithm is that symmetric cryptography is calculated
Method, the second Encryption Algorithm are rivest, shamir, adelmans.
According to a preferred embodiment, it is logical that laser is established between the first communications platform 100 and the second communications platform 200
After letter link and before transmitting data to be encrypted, the first communications platform 100 and the second communications platform 200 can carry out code key
Generating process and code key transmission process.
Preferably, code key generating process may include: that the first communications platform 100 or the second communications platform 200 are generated and used
In the symmetrical code key of the first Encryption Algorithm, the first communications platform 100 generates the first asymmetric code key for being used for the second Encryption Algorithm,
At least one step in the second asymmetric code key for the second Encryption Algorithm is generated with the second communications platform 200.First is non-
Symmetrical code key may include the first public key and the first private key.Second asymmetric code key may include the second public key and the second private key.
Preferably, code key transmission process may include: that the first communications platform 100 or the second communications platform 200 will generate
Symmetrical code key be transferred to second by establishing laser communication link between the first communications platform 100 and the second communications platform 200
Communications platform 200 or the first communications platform 100, the first communications platform 100 are flat by the first communication by the first public key of generation
Establish that laser communication link is transferred to the second communications platform 200 and the second communication is flat between platform 100 and the second communications platform 200
Platform 200 is by the second public key of generation by establishing laser communication link between the first communications platform 100 and the second communications platform 200
At least one step being transferred in the first communications platform 100.Preferably, in the first communications platform 100 and the second communications platform
When 200 transmit data by the laser communication link established between the first communications platform 100 and the second communications platform 200, the
One communications platform 100 and the second communications platform 200 can pass through symmetrical code key encrypted transmission data.Preferably, in the first communication
Platform 100 and the second communications platform 200 by laser communication link that the first communications platform 100 and the first satellite 310 are established with
And first when the laser communication link transmission data established of satellite 310 and the second communications platform 200, the first communications platform 100
The data of transmission just pass through 310 indirect communication of the first satellite to second after being encrypted by the first private key and the second public key
Communications platform 200.Second communications platform 200 can unlock the first communications platform received by the first public key and the second private key
100 data sent.Pass through the first communications platform 100 and the first satellite in the first communications platform 100 and the second communications platform 200
The laser communication link that 310 laser communication links established and the first satellite 310 and the second communications platform 200 are established transmits number
When, the data that the second communications platform 200 is sent can be encrypted by the second private key and the first public key after just by the
One satellite, 310 indirect communication gives the first communications platform 100.First communications platform 100 can pass through the second public key and the first private key
Unlock the data that the second communications platform 200 received is sent.
Embodiment 3
The present embodiment can be to embodiment 1,2 or its further improvement and/or supplement for combining, and duplicate content is not
It repeats again.Present embodiment discloses a kind of communication systems, are also possible to a kind of laser communication system, are also possible to one kind and are based on defending
The laser communication system of star, is also possible to a kind of satellite-based space-to-ground laser communications system, which is adapted for carrying out the present invention
The each method and step recorded, to reach expected technical effect.In the case where not causing conflict or contradictory situation, other implementations
The entirety and/or partial content of the preferred embodiment of example can be used as the supplement of the present embodiment.
According to a preferred embodiment, the system may include: several satellites 300 form satellite communication network, the
One communications platform 100 and the second communications platform 200.First communications platform 100 may include the first ATP device 110.Second communication
Platform 200 may include the 2nd ATP device 210.
Preferably, the laser beam that system of the invention generates is very narrow, and the angle of divergence of laser beam can be 12~95 μ rad.Especially
Its preferably 15~20 μ rad.The angle of divergence for the laser transmitting antenna that the present invention uses adjustably is arranged, and adjustable range is 15~20 μ
Rad or 12~95 μ rad.Narrow laser beam is advantageous, because this can be by providing higher every square metre watt at target
Spy provides high directivity and can obtain high data rate over long distances.But since laser beam is very narrow, it must
It must accurately refer to very much aiming to establish reliable and stable communication.
Preferably, system of the invention is giving laser beam bring using nonlinear optics phase conjugated manner compensation atmosphere
Tracking aiming is carried out to moving target under conditions of wavefront distortion.Thus, it is possible to will take aim at light energy preferably to concentrate on a very little
Region provides and more precisely aims at.
Preferably, system of the invention can by the way of discontinuous transmission laser intermittently communicating.It is established in the system
Between any two equipment of laser communication link, during the intermittently communicating by the way of discontinuous transmission laser, together
The one moment system only assigns one of equipment and is in the state for not emitting laser.
According to a preferred embodiment, which may include several earth stations 400.First satellite 310 can call
At least one satellite 300 in several satellites 300 and/or at least one earth station 400 in several earth stations 400 use laser beam
Scanning is located at the second communications platform 200 of uncertain region until one of satellite 300 or an earth station 400 use laser
Beam is irradiated to the second communications platform 200 and notifies the first satellite 310, and the first satellite 310 is thus with the second communication of laser beam irradiation
Platform 200 is to establish laser communication link between the first satellite 310 and the second communications platform 200.Preferably, the first satellite
310 be at least one satellite 300 in several satellites 300 called and/or at least one earth station in several earth stations 400
400 divide different scanning areas.Preferably, different scanning areas can overlap region.Preferably, several satellites
300 may include the microwave star with microwave communication, the visual star with laser communication and/or the microwave that can use laser or microwave communication
Optics shares star.Preferably, several earth stations 400 may include several microwave stations 410 and/or several optics stations 420.It is uncertain
Region can be first pass through the accurate location that the opposing optical mode that non-optical manner determines determines for bigger region, then
With laser beam in this uncertain region the second communications platform of further scanning search 200.For example, first pass through satellite 300 and/
Or the microwave positioning of microwave station 410 goes out uncertain region locating for the second communications platform 200.Then the first satellite 310 requests to adjust
It is scanned in uncertain region with the second satellite 320 and/or optics station 420 with laser, to determine the second communications platform 200
Relatively more accurate position, so as to the laser communication link established between the first satellite 310 and the second communications platform 200.
Word " module " as used herein describes any hardware, software or combination thereof, is able to carry out and " mould
The associated function of block ".
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention and its attached drawing are illustrative and are not
Constitute limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of satellite-based laser communication system characterized by comprising
Satellite communication network, the first communications platform (100) and the second communications platform (200) of several satellite (300) compositions, first
Communications platform (100) includes the first ATP device (110), and the second communications platform (200) includes the 2nd ATP device (210), wherein
First communications platform (100) and the carrier of a side or a side in the second communications platform (200) can move in land face or the water surface
Dynamic, the carrier of the first communications platform (100) and another party or another party in the second communications platform (200) can move in the sky
It is dynamic；
When the first communications platform (100) attempt to communicate with the second communications platform (200) foundation in undefined position, first
Communications platform (100) transmitting laser beam, which is directed toward, has the first satellite (310) of known location to request to establish the first communications platform
(100) laser communication link between the first satellite (310) is built between the first communications platform (100) and the first satellite (310)
Be based at least partially on after vertical laser communication link the first ATP device (110) determine the first communications platform (100) posture and
Position,
First satellite (310) laser beam flying is located at the second communications platform (200) of uncertain region until laser beam irradiates
To the second communications platform (200) and request to establish laser communication chain between the first satellite (310) and the second communications platform (200)
Road establishes laser communication link and is based at least partially on second later between the first satellite (310) and the second communications platform (200)
ATP device (210) determines posture and the position of the second communications platform (200),
According to the posture and position of the posture of determining the first communications platform (100) and position and the second communications platform (200),
Laser communication link is established between the first communications platform (100) and the second communications platform (200), and passes through the first communications platform
(100) laser communication link established between the second communications platform (200) is flat in the first communications platform (100) and the second communication
Platform transmits data between (200).
2. the system as claimed in claim 1, which is characterized in that in the first communications platform (100) and the second communications platform (200)
Between establish and complete before laser communication link to determine in the first communications platform (100) and the second communications platform (200) at least
One posture and position, complete the posture for determining the first communications platform (100) or the second communications platform (200) and position it
Afterwards, do not determine that the second communications platform (200) or the first communications platform (100) court of posture and position have determined that posture and position
The first communications platform (100) or the second communications platform (200) transmitting laser beam flying to attempt to establish the first communications platform
(100) laser communication link between the second communications platform (200).
3. the system as described in one of preceding claims, which is characterized in that flat in the second communication for not determining posture and position
Either the first communications platform (100) communicates platform (200) towards the first communications platform (100) for having determined that posture and position or second
It is logical to attempt the laser established between the first communications platform (100) and the second communications platform (200) that platform (200) emits laser beam
During believing link, the determination of the second communications platform (200) or the first communications platform (100) of posture and position is not determined
Process does not terminate until attempting the laser communication link established between the first communications platform (100) and the second communications platform (200)
Succeed or the system determines the second communications platforms (200) or the first communications platform (100) that do not determine posture and position
Posture and position.
4. the system as described in one of preceding claims, which is characterized in that the first communications platform (100) further includes the 3rd ATP
Device (120), the second communications platform (200) further include the 4th ATP device (220), logical in the first communications platform (100) and second
It is established after laser communication link between letter platform (200), the first satellite (310) selectively disconnects itself and the first communications platform
(100) and/or between the second communications platform (200) laser communication link established, and in the first communications platform (100) and
After at least one of two communications platforms (200) disconnect the laser communication link that it is established with the first satellite (310), first is logical
Believe between platform (100) and the second communications platform (200) at least partially through the 3rd ATP device (120) and the 4th ATP device
(220) mutual posture and position are determined.
5. the system as described in one of preceding claims, which is characterized in that the first satellite (310) selectively disconnects itself and
The processing for the laser communication link established between one communications platform (100) and/or the second communications platform (200) includes:
After establishing laser communication link between the first communications platform (100) and the second communications platform (200), the first satellite
(310) mobility of the first communications platform (100) and the second communications platform (200) is analyzed；
First satellite (310) is according to the mobility of the first communications platform (100) and the second communications platform (200) from following manner
It selects a kind of mode and executes:
When relatively ball is in moving condition for the first communications platform (100) and the second communications platform (200), the first satellite
(310) laser communication link established with the first communications platform (100) and the second communications platform (200) is kept；
When an opposite earth in the first communications platform (100) and the second communications platform (200) remains static, the
One satellite (310) disconnects what it was established with the first communications platform (100) or the second communications platform (200) to remain static
Laser communication link；
When relatively ball remains static for the first communications platform (100) and the second communications platform (200), the first satellite
(310) its laser communication link established with the first communications platform (100) and the second communications platform (200) is disconnected.
6. the system as described in one of preceding claims, which is characterized in that disconnect it in the first satellite (310) and be in static
It, need to be in quiet before the laser communication link that the first communications platform (100) or the second communications platform (200) of state are established
Only the first communications platform (100) or the second communications platform (200) of state send the request for disconnecting laser communication link；
In response to the request for disconnecting laser communication link, in the first communications platform (100) and the second communications platform (200)
At least one prejudges the first communications platform in the first preset duration after it has been broken based on geography information model and trajectory predictions
(100) disconnection for the laser communication link established between the second communications platform (200)；
When at least one of the first communications platform (100) and the second communications platform (200) are based on geography information model and track
It is built between the first communications platform (100) and the second communications platform (200) in the first preset duration of prediction anticipation after it has been broken
The disconnection times of vertical laser communication link are more than or equal to the first communications platform when preset times threshold value, to remain static
(100) or the second communications platform (200) refusal the first satellite (310) request；
When at least one of the first communications platform (100) and the second communications platform (200) are based on geography information model and track
It is built between the first communications platform (100) and the second communications platform (200) in the first preset duration of prediction anticipation after it has been broken
The disconnection times of vertical laser communication link are less than the first communications platform when preset times threshold value, to remain static
(100) or the second communications platform (200) receive the first satellite (310) request.
7. the system as described in one of preceding claims, which is characterized in that be based at least partially on the first ATP device (110)
The processing of the posture and position that determine the first communications platform (100) includes: to obtain first from almanac data and/or registration table to defend
The position of star (310) obtains the speed and geo-location of the first communications platform (100), obtains the observation of the first ATP device (110)
The first satellite (310) position, position based on the first satellite (310) obtained from almanac data and/or registration table is obtained
First satellite of the first ATP device (110) observation of the speed and geo-location and acquisition of the first communications platform (100) taken
(310) position calculates posture and the position of the first communications platform (100): and/or
It is based at least partially on the 2nd ATP device (210) and determines the posture of the second communications platform (200) and the processing packet of position
It includes: obtaining the position of the first satellite (310) from almanac data and/or registration table, obtain the speed of the second communications platform (200)
And geo-location, obtain the position of the first satellite (310) of the 2nd ATP device (210) observation, based on from almanac data and/or
The position of the first satellite (310) obtained in registration table, the speed of the second communications platform (200) obtained and geo-location and
Obtain the 2nd ATP device (210) observation the first satellite (310) position calculate the second communications platform (200) posture and
Position.
8. the system as described in one of preceding claims, which is characterized in that refer in the first communications platform (100) transmitting laser beam
To the first satellite (310) with known location to request to establish between the first communications platform (100) and the first satellite (310)
Before laser communication link, the first communications platform (100) selects the first satellite (310) from almanac data or registration table, choosing
The 10mrad view of first ATP device (110) of the first satellite (310) selected when selection in the first communications platform (100)
In.
9. the system as described in one of preceding claims, which is characterized in that flat in the first communications platform (100) and the second communication
Platform is successfully established before laser communication link between (200), by using the first ATP device (110) and the 3rd ATP device
(120) it establishes the absolute pose of the first communications platform (100) and is directed toward towards the absolute of the second communications platform (200) to compensate the
The beam drift of the laser beam of one communications platform (100) transmitting；And/or
Before being successfully established laser communication link between the first communications platform (100) and the second communications platform (200), by making
The absolute pose and direction first of the second communications platform (200) are established with the 2nd ATP device (210) and the 4th ATP device (220)
The absolute of communications platform (100) is directed toward to compensate the beam drift of the laser beam of the second communications platform (100) transmitting.
10. the system as described in one of preceding claims, which is characterized in that the system also includes several earth stations (400),
First satellite (310) can call at least one satellite (300) and/or several earth stations (400) in several satellites (300)
At least one earth station (400) be located at the second communications platform (200) of uncertain region until wherein one with laser beam flying
A satellite (300) or an earth station (400) are irradiated to the second communications platform (200) with laser beam and notify the first satellite
(310), the first satellite (310) is thus with laser beam irradiation the second communications platform (200) with logical with second in the first satellite (310)
Laser communication link is established between letter platform (200).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010438405.9A CN111641457B (en) | 2018-11-07 | 2018-11-07 | Satellite system based on laser communication |
| CN202010438404.4A CN111641456B (en) | 2018-11-07 | 2018-11-07 | Laser communication method based on satellite |
| CN201811321887.9A CN109495175B (en) | 2018-11-07 | 2018-11-07 | Laser communication system based on satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811321887.9A CN109495175B (en) | 2018-11-07 | 2018-11-07 | Laser communication system based on satellite |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010438405.9A Division CN111641457B (en) | 2018-11-07 | 2018-11-07 | Satellite system based on laser communication |
| CN202010438404.4A Division CN111641456B (en) | 2018-11-07 | 2018-11-07 | Laser communication method based on satellite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109495175A true CN109495175A (en) | 2019-03-19 |
| CN109495175B CN109495175B (en) | 2020-05-15 |
Family
ID=65695351
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811321887.9A Active CN109495175B (en) | 2018-11-07 | 2018-11-07 | Laser communication system based on satellite |
| CN202010438405.9A Active CN111641457B (en) | 2018-11-07 | 2018-11-07 | Satellite system based on laser communication |
| CN202010438404.4A Active CN111641456B (en) | 2018-11-07 | 2018-11-07 | Laser communication method based on satellite |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010438405.9A Active CN111641457B (en) | 2018-11-07 | 2018-11-07 | Satellite system based on laser communication |
| CN202010438404.4A Active CN111641456B (en) | 2018-11-07 | 2018-11-07 | Laser communication method based on satellite |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN109495175B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111683081A (en) * | 2020-06-04 | 2020-09-18 | 北京百度网讯科技有限公司 | Method and device for secure transmission of data |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020167702A1 (en) * | 2000-01-10 | 2002-11-14 | Badesha Surjit S. | Optical communication system using a high altitude tethered ballon |
| US20090028573A1 (en) * | 2002-06-27 | 2009-01-29 | Krill Jerry A | Mobile communications via an optical signal during adverse atmospheric conditions |
| CN103117796A (en) * | 2013-01-25 | 2013-05-22 | 西安空间无线电技术研究所 | Relay retransmission device and relay retransmission method for satellite radio frequency and optical fiber signal transmission data |
| CN104539372A (en) * | 2015-01-09 | 2015-04-22 | 西安应用光学研究所 | Long-distance laser atmosphere communication receiving device with fast alignment function and communication method |
| CN106656330A (en) * | 2017-01-21 | 2017-05-10 | 航天恒星科技有限公司 | Spatial optical communication method and spatial optical communication system |
| CN108566241A (en) * | 2018-04-20 | 2018-09-21 | 宁波光舟通信技术有限公司 | A kind of communication system |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777064B (en) * | 2005-12-16 | 2011-08-24 | 北京大学 | Satellite laser communication terminal |
| CN1825787A (en) * | 2006-04-03 | 2006-08-30 | 哈尔滨工业大学 | Method for establishing laser link between low orbit safellite and ground station |
| CN101072072A (en) * | 2007-06-15 | 2007-11-14 | 哈尔滨工业大学 | Space optical communication terminal scanning acquisition performance ground test method |
| CN101188456B (en) * | 2007-12-19 | 2011-07-06 | 哈尔滨工业大学 | A performance tracking and testing method for space optical communication system |
| US8850943B2 (en) * | 2011-04-05 | 2014-10-07 | Sergey Fedorovich Brylev | Management system of several snipers |
| EP2511656A1 (en) * | 2011-04-14 | 2012-10-17 | Hexagon Technology Center GmbH | Measuring system for determining the 3D coordinates of an object surface |
| CN102185653B (en) * | 2011-04-26 | 2015-10-28 | 北京大学 | Based on the relevant radio telecommunicaltion system of frequency stabilized carbon dioxide laser, method and receiver |
| CN102324962B (en) * | 2011-05-31 | 2014-04-02 | 西安空间无线电技术研究所 | Method for capturing, tracking and processing satellite optical communication |
| EP2615749B1 (en) * | 2011-12-20 | 2017-12-06 | Thales Alenia Space Schweiz AG | Method for optical data transmission from low earth orbit to earth and corresponding communication system |
| CN103326780B (en) * | 2013-06-21 | 2015-09-09 | 中国科学院空间科学与应用研究中心 | Based on the free space optical communication APT system and method for compressed sensing receiver |
| CN103501203B (en) * | 2013-09-26 | 2015-03-18 | 北京空间飞行器总体设计部 | Laser satellite-ground communication link test system suitable for remote sensing satellite |
| CN103837982B (en) * | 2014-03-26 | 2016-01-27 | 中国人民解放军国防科学技术大学 | The target calculated based on facula mass center is total to target aiming control method at loop array light beam |
| CN104124528B (en) * | 2014-05-05 | 2016-03-02 | 北京星网卫通科技开发有限公司 | Exceedingly high line stabilization tracking in a kind of inertia/GNSS/ satellite beacon combined moving |
| CN104539350B (en) * | 2014-11-28 | 2017-05-03 | 北京大学 | Space laser communication terminal level system testing method |
| CN104794096A (en) * | 2015-01-21 | 2015-07-22 | 李振华 | Personal work system capable of being dynamically combined and adjusted |
| CN104954069B (en) * | 2015-06-23 | 2017-08-29 | 西安空间无线电技术研究所 | A kind of satellite laser communications catching method based on flashlight |
| JP6486234B2 (en) * | 2015-07-30 | 2019-03-20 | 三菱電機株式会社 | Positioning device and positioning method |
| CN105356943B (en) * | 2015-09-29 | 2017-12-22 | 西安空间无线电技术研究所 | A kind of laser communication acquisition and tracking system and its catch with method |
| CN105677240B (en) * | 2015-12-30 | 2019-04-23 | 上海联影医疗科技有限公司 | Data-erasure method and system |
| CN107027090B (en) * | 2016-02-02 | 2020-04-21 | 华为技术有限公司 | Network communication method and device |
| KR101885356B1 (en) * | 2016-05-04 | 2018-08-03 | 임재형 | Apparatus for determining position information of object and method thereof |
| CN106911381A (en) * | 2017-01-20 | 2017-06-30 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Laser link communication measurement hybrid system |
| US10158427B2 (en) * | 2017-03-13 | 2018-12-18 | Bae Systems Information And Electronic Systems Integration Inc. | Celestial navigation using laser communication system |
| CN107298186B (en) * | 2017-06-18 | 2020-05-19 | 湖北航天技术研究院总体设计所 | Method for keeping autonomous relative position of co-orbital satellite based on laser load |
| CN107633108A (en) * | 2017-07-27 | 2018-01-26 | 上海卫星工程研究所 | Fixed statellite imaging based navigation and registering track motion compensation method |
| CN108279010A (en) * | 2017-12-18 | 2018-07-13 | 北京时代民芯科技有限公司 | A kind of microsatellite attitude based on multisensor determines method |
| CN108494472B (en) * | 2018-02-12 | 2021-06-22 | 北京中科深链空间科技有限公司 | Space-based deep space relay communication satellite networking system |
-
2018
- 2018-11-07 CN CN201811321887.9A patent/CN109495175B/en active Active
- 2018-11-07 CN CN202010438405.9A patent/CN111641457B/en active Active
- 2018-11-07 CN CN202010438404.4A patent/CN111641456B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020167702A1 (en) * | 2000-01-10 | 2002-11-14 | Badesha Surjit S. | Optical communication system using a high altitude tethered ballon |
| US20090028573A1 (en) * | 2002-06-27 | 2009-01-29 | Krill Jerry A | Mobile communications via an optical signal during adverse atmospheric conditions |
| CN103117796A (en) * | 2013-01-25 | 2013-05-22 | 西安空间无线电技术研究所 | Relay retransmission device and relay retransmission method for satellite radio frequency and optical fiber signal transmission data |
| CN104539372A (en) * | 2015-01-09 | 2015-04-22 | 西安应用光学研究所 | Long-distance laser atmosphere communication receiving device with fast alignment function and communication method |
| CN106656330A (en) * | 2017-01-21 | 2017-05-10 | 航天恒星科技有限公司 | Spatial optical communication method and spatial optical communication system |
| CN108566241A (en) * | 2018-04-20 | 2018-09-21 | 宁波光舟通信技术有限公司 | A kind of communication system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111683081A (en) * | 2020-06-04 | 2020-09-18 | 北京百度网讯科技有限公司 | Method and device for secure transmission of data |
| CN111683081B (en) * | 2020-06-04 | 2022-10-18 | 北京百度网讯科技有限公司 | Method and device for secure transmission of data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109495175B (en) | 2020-05-15 |
| CN111641457B (en) | 2021-04-13 |
| CN111641457A (en) | 2020-09-08 |
| CN111641456B (en) | 2021-04-13 |
| CN111641456A (en) | 2020-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109698721A (en) | A kind of satellite laser communications system | |
| CN109525302B (en) | Aerial-underwater communication system based on satellite | |
| CN111162903B (en) | Free space quantum key distribution system and method for aircraft | |
| NO334170B1 (en) | Method and system for long distance, adaptive, mobile, beamforming adhoc communication system with integrated positioning | |
| US6762721B2 (en) | Urban terrain geolocation system | |
| US20230003827A1 (en) | Method and apparatus for positioning using backscatter tag | |
| CN211406034U (en) | Free space quantum key distribution system for aircraft | |
| BR102013030070A2 (en) | GEOLOCALIZATION METHOD OF A TERMINAL SENDING SINGLE SIGNAL TO A SATELLITE SYSTEM | |
| Herschfelt | Simultaneous positioning and communications: Hybrid radio architecture, estimation techniques, and experimental validation | |
| CN109495175A (en) | A kind of satellite-based laser communication system | |
| Yokoyama et al. | An architecture for secure positioning in a UAV swarm using RSSI-based distance estimation | |
| WO2022084678A1 (en) | Aerial platforms based quantum communication | |
| Moon et al. | Pointing-and-Acquisition for Optical Wireless in 6G: From Algorithms to Performance Evaluation | |
| CN109787677A (en) | A kind of handheld terminal based on low orbit satellite optical communication system | |
| Kim et al. | Antenna tracking techniques for long range air-to-ground communication systems using a monopulse method | |
| KR102213953B1 (en) | Apparatus and method for generating satellite navigation signal | |
| Zhang et al. | Passive maritime surveillance based on low earth orbit satellite constellations | |
| Chen et al. | Adaptive beamwidth control for UAV mm Wave communications under jittering effects | |
| Matti et al. | Aviation scenarios for 5g and beyond | |
| Tan et al. | Wireless optical positioning with multiple photodiodes and LED clusters | |
| CN115811713A (en) | UE equipment signal searching device and method based on unmanned aerial vehicle | |
| CN112596079B (en) | Navigation closed-loop deception method and system for target aircraft | |
| Jain et al. | Accurate time difference of arrival estimation for HF radio broadcast signals | |
| JP2007150455A (en) | Free space optical communication system | |
| Narula | Towards secure & robust PNT for automated systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |