CN105490727A - Space laser communication forwarding system based on passive optical switch - Google Patents
Space laser communication forwarding system based on passive optical switch Download PDFInfo
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- CN105490727A CN105490727A CN201510836271.5A CN201510836271A CN105490727A CN 105490727 A CN105490727 A CN 105490727A CN 201510836271 A CN201510836271 A CN 201510836271A CN 105490727 A CN105490727 A CN 105490727A
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- 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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- 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
- H04B7/18515—Transmission equipment in satellites or space-based relays
Abstract
The invention discloses a space laser communication forwarding system based on a passive optical switch. The system consists of a ground optical signal transmitting terminal, a space forwarding system and a ground optical signal receiving terminal. A transmitting end and a receiving end for space optical communications are placed on the ground, and the space forwarding system is carried by an aircraft and only forwards optical signals without processing such as amplification, modulation, demodulation and the like, so that the complexity of a space system is lowered greatly, and the sizes, weights and power consumption of space loads are lowered. Moreover, point-to-point or broadcasting-mode forwarding of the optical signals is realized through an optical switching system. The signals are modulated on the transmitting end, and demodulated on the receiving end, so that ground-space-ground forwarding communications are realized.
Description
Technical field
The invention belongs to space optical communication field, is a kind of laser space communication repeater system based on passive light switch in particular.
Background technology
Satellite communication can be divided into microwave communication and optical communication two kinds, and its most a kind of important means of communication, has important effect in modern society's military and civilian field.Along with the high speed development of information age, microwave communication can not meet the current growing demand to satellite communication bandwidth sum capacity and high-speed communication, in addition, microwave communication also cannot meet the demand of specific user to information transmission safety, is therefore badly in need of seeking the communication technology that data transfer rate is high and fail safe is good.
Compared to microwave communication, laser satellite optical communication using laser as information carrier has the incomparable advantage of microwave communication in the following areas: ultra high bandwidth, superelevation transmission data rate, strong anti-interference ability, be difficult to be intercepted and captured, fail safe is good, equipment volume is little, lightweight, low in energy consumption, cost is low, system mobility strong, exempt from the radio frequency usage license, be easy to dilatation and networking flexibility etc., has therefore become the key project of main big country development in the world.But satellite communication is because of reasons such as its networking cycle are long, cost is high, in military field group-net communication, there is certain defective, if we are with aircraft mounting space repeater system, aloft only ground signal is optimized, with light switch, point-to-point or broadcast type carries out data retransmission, this greatly simplifies space system, under the advantage not affecting above-mentioned optical communication, can also cost be greatly reduced, accelerate military combat networking speed, greatly improve combat system communication mobility.
In sum, in order to realize, military combat constructing communication network is quick, antijamming capability strong, and security performance is high, and system mobility is strong, and a kind of laser space communication repeater system based on passive light switch arises at the historic moment.
Summary of the invention
The object of the invention is to, a kind of laser space communication repeater system based on passive light switch is provided, the transmitting and receiving end of space optical communication is all positioned over ground by this system, with aircraft mounting space repeater system, and space repeater system only forwards light signal, and do not amplify, modulation, the process such as demodulation, enormously simplify the complexity of space system, reduce the volume of space loading, weight and power consumption, and the forwarding of the point-to-point of light signal or broadcast type is achieved with optical switching system, at transmitting terminal, signal is modulated, at receiving terminal, demodulation is carried out to signal, realize the forwarding communication on ground-air-ground.
The invention provides a kind of laser space communication repeater system based on passive light switch, this system is made up of ground light launch terminal, space repeater system and ground light receiving terminal three part;
Wherein ground light launch terminal comprises:
One optical sender, for providing the flashlight needing transmission;
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This alignment system is used for realizing ground-air fine alignment; The incidence end of this system is connected with the light exit side mouth of optical sender;
One instruction control module, for controlling alignment system, and launches microwave signal;
Space repeater system comprises:
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This system is for realizing accurate aligning the with ground station's alignment system;
One optical switching system, for realizing the forwarding of light in space station, the port A of optical switching system is entered by the light of alignment system outgoing, a 1*2 optical switch will be entered, instruction control 1*2 optical switch is sent by instruction control module, light is from port a1 and port a2 outgoing: enter 1*7 beam splitter from the light of port a1 outgoing, again respectively from port B-1, port C-1, port D-1, port E-1, port F-1, port G-1, port H-1 outgoing, achieve broadcast type like this and forward, the port of 4*4 optical switch is entered 1. from the light of port a2 outgoing, one arm of two 1*2 optical switches is connected, another arm of two 1*2 optical switches is connected, arm is opened by instruction control 1*2 optical switch, light is from port E-1, port F-1, port G-1, the outgoing of port H-1 port, or by port 8. outgoing light entry port 7., or port light entry port 6. 5., instruction control 4*4 optical switch is sent again by instruction control module, by light from port B-1, port C-1 or port D-1 outgoing, achieve from port light 1. like this, from port B-1, port C-1, port D-1, port E-1, port F-1, port G-1, the outgoing of port H-1 arbitrary port, achieve point-to-point type like this to forward,
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This system is aimed at the accurate of ground station for realizing; This alignment system has the module of 7 identical 26S Proteasome Structure and Functions, and its entry port is connected with exit ports B-1, the port C-1 of optical switching system, port D-1, port E-1, port F-1, port G-1, port H-1 respectively;
One command control system, for controlling alignment system and optical switching system, receives the microwave command signal from ground station's command control system, and emission instruction signal;
Ground light receiving terminal has the terminal of the identical structure of seven covers to form, and comprising:
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This system is aimed at the accurate of space station alignment system for realizing;
One optical receiver, for the amplification to optical information, detection, reception, process and demodulation, its each input port and each exit ports of optical switch are corresponding after alignment system is aimed to be connected;
One instruction control module, the microwave instruction that this module sends for receiving space station instruction control module, and control alignment system, guarantee the fine alignment of alignment system and alignment system.
As can be seen from technique scheme, the present invention has following beneficial effect:
The present invention, owing to being space optical communication, system solves the problem the rate limit of microwave transmission, can realize the requirement of high speed data transfer;
The present invention, due to the signal carrier of laser, system solves the problem Large Copacity and the safety issue of data, can transmission of large capacity data, ensures that data are not are not intercepted and captured;
Most of device of system is placed in ground by the present invention, the aircraft of space loading is only placed several passive light switch and forwards signal, greatly reduces the requirement of equipment for aircraft load and power consumption;
The present invention can realize point-to-point communication, also can realize broadcast operation.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly understand, referring to showing accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is the schematic diagram of the laser space communication repeater system that the present invention is based on passive light switch.
Embodiment
Refer to shown in Fig. 1, the invention provides a kind of laser space communication repeater system based on passive light switch, this system comprises:
One optical sender 1, for providing the flashlight needing transmission, this light signal can be digital signal, also can be analog signal, can be high speed signal, also can be low speed signal, can be coherent light signal, also can be incoherent optical signal; The communication wavelengths of optical sender light source used is selected within atmospheric window scope, and modulator used can be intensity modulator, also can be phase-modulator;
One alignment system 2, this system is by locating module, Acquisition tracking and pointing (ATP) system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, can be the locating module based on GPS, also can be the locating module based on dipper system; Acquisition tracking and pointing (ATP) system is used for the dynamic tracking of space optics antenna and aiming, and comprise thick sighting device, smart sighting device, in advance sighting device, control and sensor electronics system, it is controlled by instruction control module; Optical antenna is used for parallelly expanding and to the focusing coupling receiving light, comprise a lens combination and a colimated light system, the turntable accurately in real time rotated is formed radiative; The incidence end of this system is connected with the light exit side mouth of optical sender 1;
One instruction control module 3, for controlling alignment system 2, sends microwave instruction to instruction control module 6; Light signal emission terminal is constituted by optical sender 1, alignment system 2 and instruction control module 3;
One alignment system 4, this system is identical with alignment system 2, by locating module, Acquisition tracking and pointing (ATP) system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, can be the locating module based on GPS, also can be the locating module based on dipper system; Acquisition tracking and pointing (ATP) system is used for the dynamic tracking of space optics antenna and aiming, and comprise thick sighting device, smart sighting device, in advance sighting device, control and sensor electronics system, it is controlled by instruction control module; Optical antenna be used for radiative parallel expand and to receive light focusing coupling; This alignment system is used for realizing this optical antenna of ground-air fine alignment and comprises a lens combination and a colimated light system, and the turntable accurately rotated in real time is formed; This system is aimed at the accurate of ground station alignment system 2 for realizing;
One optical switching system 5, for realizing the forwarding of light in space station, the port A of optical switching system is entered by the light of alignment system 4 outgoing, a 1*2 optical switch a will be entered, instruction control 1*2 optical switch a is sent by instruction control module 6, light can from port a1 and port a2 outgoing: enter 1*7 beam splitter from the light of port a1 outgoing, again respectively from port B-1, port C-1, port D-1, port E-1, port F-1, port G-1, port H-1 outgoing, achieve broadcast type like this and forward, the port of 4*4 optical switch is entered 1. from the light of port a2 outgoing, 1*2 optical switch b is connected with an arm of 1*2 optical switch c, 1*2 optical switch d is connected with an arm of 1*2 optical switch e, arm is opened by instruction control 1*2 optical switch, light can from port E-1, port F-1, port G-1, port H-1 outgoing, also can by port 8. outgoing light entry port 7., or port light entry port 6. 5., instruction control 4*4 optical switch is sent again by instruction control module 6, by light from port B-1, port C-1 or port D-1 outgoing, achieve from port light 1. like this, can from port B-1, port C-1, port D-1, port E-1, port F-1, port G-1, the outgoing of port H-1 arbitrary port, achieve point-to-point type like this to forward, this optical switching system 9 is made up of the optical switch of a 4*4, the optical switch of 5 1*2 and a 1*7 optical branching device (splitter), also can be the optical switch of n*n, the optical switch of multiple 1*2 and 1*n optical branching device composition.Optical switch can be mems optical switch, also can be mechanical optical switch, can also be the optical switch based on liquid crystal;
One alignment system 6, this system is identical with alignment system 2, by locating module, Acquisition tracking and pointing (ATP) system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, can be the locating module based on GPS, also can be the locating module based on dipper system; Acquisition tracking and pointing (ATP) system is used for the dynamic tracking of space optics antenna and aiming, and comprise thick sighting device, smart sighting device, in advance sighting device, control and sensor electronics system, it is controlled by instruction control module; Optical antenna is used for parallelly expanding and to the focusing coupling receiving light, comprise a lens combination and a colimated light system, the turntable accurately in real time rotated is formed radiative; The entry port of this system is connected with the exit ports B-1 (C-1, D-1, E-1, F-1, G-1, H-1) of optical switching system;
One instruction control module 7, for receiving the microwave signal sent by instruction control module 3, and ground station instruction control module 9 sends microwave instruction, controls alignment system 4 and 7 simultaneously, and the on off state of each optical switch in control optical switching system, be the brain of space loading; By alignment system 4,7, optical switching system 5 and instruction control module 6 constitute space repeater system;
One alignment system 8, this system is identical with alignment system 2, by locating module, Acquisition tracking and pointing (ATP) system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, can be the locating module based on GPS, also can be the locating module based on dipper system; Acquisition tracking and pointing (ATP) system is used for the dynamic tracking of space optics antenna and aiming, and comprise thick sighting device, smart sighting device, in advance sighting device, control and sensor electronics system, it is controlled by instruction control module; Optical antenna is used for parallelly expanding and to the focusing coupling receiving light, comprise a lens combination and a colimated light system, the turntable accurately in real time rotated is formed radiative; This system is aimed at the accurate of space station alignment system 6 for realizing;
One optical receiver 9, for the amplification to optical information, detection, reception, process and demodulation; This optical receiver and optical sender are Corresponding matching relations: the light source of optical sender specific band, optical receiver then to should the device of wave band, optical sender specific modulation mode, optical receiver is corresponding corresponding demodulation mode then; Its input port B-2 (C-2, D-2, E-2, F-2, G-2, H-2) and optical switch exit ports B-1 (C-1, D-1, E-1, F-1, G-1, H-1) port connect through alignment system 4 and 8 is corresponding;
One instruction control module 10, the microwave instruction that this module sends for receiving instruction control module 6, controls alignment system 8, guarantees the fine alignment of alignment system 8 and alignment system 7; Light signal receiving terminal is constituted by alignment modules 8, optical receiver 9 and instruction control module 10;
Three parts should be divided based on the laser space communication repeater system of passive light switch, be made up of light signal emission terminal, space repeater system and light signal receiving terminal.Optical receiver 1 utilizing emitted light signal, by instruction control module 3 launched microwave signal controlling instruction control module 7, realizes the aligning of alignment system 2 and 4, light signal after aligning, optical switching system will be entered, by instruction control module 7, two kinds of forwarding states can be realized, one is point-to-point forwarding, one is that broadcast type forwards, the exit end of optical switching system will be connected with each alignment system, the light of port B-1 outgoing is after alignment system 6 and 8, corresponding with the entry port B-2 of optical receiver, port C-1, port D-1, port E-1, port F-1, port G-1, the light of port H-1 outgoing in like manner with the entry port C-2 of ground light receiver, port D-2, port E-2, port F-2, port G-2, port H-2 correspondence connects, get back to the light of optical receiver, carry out the amplification of signal, detection, receive, process and demodulation, finally achieve the communication forwarding on ground-air-ground.
Above-described instantiation; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only instantiation of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1., based on a laser space communication repeater system for passive light switch, this system is made up of ground light launch terminal, space repeater system and ground light receiving terminal three part;
Wherein ground light launch terminal comprises:
One optical sender, for providing the flashlight needing transmission;
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This alignment system is used for realizing ground-air fine alignment; The incidence end of this system is connected with the light exit side mouth of optical sender;
One instruction control module, for controlling alignment system, and launches microwave signal;
Space repeater system comprises:
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This system is for realizing accurate aligning the with ground station's alignment system;
One optical switching system, for realizing the forwarding of light in space station, the port A of optical switching system is entered by the light of alignment system outgoing, a 1*2 optical switch will be entered, instruction control 1*2 optical switch is sent by instruction control module, light is from port a1 and port a2 outgoing: enter 1*7 beam splitter from the light of port a1 outgoing, again respectively from port B-1, port C-1, port D-1, port E-1, port F-1, port G-1, port H-1 outgoing, achieve broadcast type like this and forward, the port of 4*4 optical switch is entered 1. from the light of port a2 outgoing, one arm of two 1*2 optical switches is connected, another arm of two 1*2 optical switches is connected, arm is opened by instruction control 1*2 optical switch, light is from port E-1, port F-1, port G-1, the outgoing of port H-1 port, or by port 8. outgoing light entry port 7., or port light entry port 6. 5., instruction control 4*4 optical switch is sent again by instruction control module, by light from port B-1, port C-1 or port D-1 outgoing, achieve from port light 1. like this, from port B-1, port C-1, port D-1, port E-1, port F-1, port G-1, the outgoing of port H-1 arbitrary port, achieve point-to-point type like this to forward,
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This system is aimed at the accurate of ground station for realizing; This alignment system has the module of 7 identical 26S Proteasome Structure and Functions, and its entry port is connected with exit ports B-1, the port C-1 of optical switching system, port D-1, port E-1, port F-1, port G-1, port H-1 respectively;
One command control system, for controlling alignment system and optical switching system, receives the microwave command signal from ground station's command control system, and emission instruction signal;
Ground light receiving terminal has the terminal of the identical structure of seven covers to form, and comprising:
One alignment system, this system is by locating module, Acquisition tracking and pointing system and optical antenna composition: locating module is used for the location to ground station, be beneficial to the coarse alignment of personal free space optical links, Acquisition tracking and pointing system is used for the dynamic tracking of space optics antenna and aiming, and optical antenna is used for parallelly expanding and to the focusing coupling receiving light radiative; This system is aimed at the accurate of space station alignment system for realizing;
One optical receiver, for the amplification to optical information, detection, reception, process and demodulation, its each input port and each exit ports of optical switch are corresponding after alignment system is aimed to be connected;
One instruction control module, the microwave instruction that this module sends for receiving space station instruction control module, and control alignment system, guarantee the fine alignment of alignment system and alignment system.
2. according to the laser space communication repeater system of claim 1 based on passive light switch, the signal that wherein optical sender provides provides digital signal, or analog signal, described signal is high speed signal or low speed signal, and described signal is coherent light signal or incoherent optical signal; The communication wavelengths of optical sender light source used is selected within atmospheric window scope, and modulator used is intensity modulator or phase-modulator.
3. according to the laser space communication repeater system of claim 1 based on passive light switch, locating module wherein in each alignment system, Acquisition tracking and pointing system and optical antenna: locating module is used for the location to ground and space loading, it is the locating module based on GPS, or based on the locating module of dipper system, for the coarse alignment of free space optical link; Acquisition tracking and pointing system is for realizing dynamic tracking and the aiming of vacant lot antenna, and comprise thick sighting device, smart sighting device, in advance sighting device, control and sensor electronics system, it is controlled by instruction control module; Optical antenna is used for launching radiative parallel expanding and being coupled to the focusing receiving light, and this optical antenna comprises a lens combination and a colimated light system, and the turntable accurately rotated in real time is formed.
4. the laser space communication repeater system based on passive light switch according to claim 1, wherein optical switching system is made up of the optical switch of a 4*4, the optical switch of 5 1*2 and a 1*7 optical branching device, or the optical switch of n*n, the optical switch of multiple 1*2 and 1*n optical branching device composition; This optical switch is mems optical switch or mechanical optical switch or the optical switch based on liquid crystal.
5. the laser space communication repeater system based on passive light switch according to claim 1, wherein optical receiver is for the amplification to optical information, detection, reception, process and demodulation; This optical receiver and optical sender are Corresponding matching relations: the light source of optical sender specific band, and optical receiver is then to should the device of wave band, and optical sender specific modulation mode, optical receiver is corresponding corresponding demodulation mode then.
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| CN108306688A (en) * | 2018-02-08 | 2018-07-20 | 南京大学 | Spatial chaos laser communication system based on the anti-mirror in spaceborne angle and method |
| CN108833009A (en) * | 2018-04-20 | 2018-11-16 | 中国科学院半导体研究所 | Multiple aperture space optical communication receiver and multiple aperture space optical communication system |
| CN109428648A (en) * | 2017-08-30 | 2019-03-05 | 中车株洲电力机车研究所有限公司 | Realize the method and device of wireless optical sending and receiving end alignment |
| CN109932850A (en) * | 2018-03-29 | 2019-06-25 | 京东方科技集团股份有限公司 | Electronic switch and remote-control key |
| CN112910550A (en) * | 2021-01-28 | 2021-06-04 | 浙江大学 | Multi-node space laser communication method based on dual wavelengths |
| CN116192256A (en) * | 2023-04-26 | 2023-05-30 | 军事科学院***工程研究院网络信息研究所 | Multi-node service information processing method based on lift-off platform |
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| CN109428648A (en) * | 2017-08-30 | 2019-03-05 | 中车株洲电力机车研究所有限公司 | Realize the method and device of wireless optical sending and receiving end alignment |
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| CN112910550A (en) * | 2021-01-28 | 2021-06-04 | 浙江大学 | Multi-node space laser communication method based on dual wavelengths |
| CN116192256A (en) * | 2023-04-26 | 2023-05-30 | 军事科学院***工程研究院网络信息研究所 | Multi-node service information processing method based on lift-off platform |
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