CN109167632A - A kind of small-sized satellite laser communications device - Google Patents
A kind of small-sized satellite laser communications device Download PDFInfo
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- CN109167632A CN109167632A CN201811163363.1A CN201811163363A CN109167632A CN 109167632 A CN109167632 A CN 109167632A CN 201811163363 A CN201811163363 A CN 201811163363A CN 109167632 A CN109167632 A CN 109167632A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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Abstract
The invention discloses a kind of small-sized satellite laser communications devices, the device includes optical telescope, common optical pathways unit, first optical path unit and the second optical path unit, the common optical pathways are equipped with galvanometer and spectrum mirror, the information load-modulate to be transmitted that first optical path unit is used to input satellite platform forms signal light, the signal light pass sequentially through the spectrum mirror and galvanometer be transmitted to the remote mirror of the optical telescope after export, second optical path unit is successively converted into electric signal by optical signal by the signal light of the galvanometer and spectrum mirror after being used to receive in the remote mirror of the optical telescope, and the satellite platform is transmitted to after carrying out decoding reduction to the electric signal.The present invention provides small-sized satellite laser communications device, solves the problems, such as that conventional apparatus volume is big, weight weight by common optical pathways unit, and structure is simple, small in size, light-weight, is suitable for microsatellite platform.
Description
Technical field
The present invention relates to FreeSpace Laser Communications Technique fields, and in particular to a kind of small-sized satellite laser communications device.
Background technique
Laser communication, which refers to, will need the information such as voice, data, image etc. transmitted to encode, and be modulated to optical signal
On into transmission and reach receiving end carry out demodulation reduction obtain the process of raw information.
Laser communication has the advantage that l) communication band is wide, is advantageously implemented high speed data transfer, is easier to realize number
The traffic rate of ten Gbps；2) bore of antenna is small, is conducive to the volume and weight that reduce communication terminal, reduces to carrying platform
The demand of resource；3) laser beam divergence is small, it is difficult to intercept and capture, be conducive to the transmission of confidential information；4) anti-electromagnetic interference capability is strong, and
Constraint is not used by radio frequency.Therefore, laser communication is the most competitive technological approaches with prospect of Space-based information transmission,
Civilian and military safe and efficient communication requirement can be met.
A popular research field is had become to the research of FreeSpace Laser Communications Technique in the world at present, and is swashed with satellite
Optic communication research is attached most importance to, and the U.S., Europe, Japan and other countries and area have been carried out the test of series of satellites laser communication, and
The engineer application stage is stepped into.With business space flight and the development of microsatellite, on the one hand, existing satellite laser communications dress
Volume, weight, the power consumption set can not meet carrying demand, cause the application of laser communication load microsatellite platform limited；Separately
On the one hand, the volume and weight of laser communication load device is larger, is unfavorable for reducing launch cost, constrains business space flight hair
Exhibition.Therefore, carry out small-sized laser communication load device to have great importance.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of small-sized satellite laser communications to fill
It sets, solves the problems, such as that conventional apparatus volume is big, weight weight by common optical pathways unit.
To achieve the above objectives, the technical solution adopted by the present invention is that:
Optical telescope is used for the transmitting and reception of signal light；
Common optical pathways unit, the common optical pathways are equipped with galvanometer and spectrum mirror；
First optical path unit, the information load-modulate to be transmitted for being used to input satellite platform forms signal light, described
Signal light pass sequentially through the spectrum mirror and galvanometer be transmitted to the optical telescope after export；
Second optical path unit, successively by the galvanometer and spectrum mirror after being used to receive the optical telescope
Signal light electric signal is converted by optical signal, and be transmitted to the satellite platform after carrying out decoding reduction to the electric signal.
Based on the above technical solution, the satellite laser communications device further includes Photoelectric Tracking and Aiming module, the light
Electric pointing module includes:
Periscopic servo mechanism, be set to the optical telescope on, and with the optical telescope common optical axis；
Smart tracking cell is used to control the angle of the galvanometer, realizes the direction to the galvanometer received signal light
Adjustment；
Rough tracking unit is used to control the periscopic servo mechanism rotation；
Charge coupled cell CCD camera is used to receive and transmit on first optical path unit and the second optical path unit
Part signal light, and the received part signal light carried out be transmitted to again after imaging the smart tracking cell and slightly with
Track unit.
Based on the above technical solution, first optical path unit includes:
Modulation of source unit, is used to receive the information of the satellite platform input, and the information load-modulate is arrived
On signal light；
Optical fiber collimator is used to receive the signal light exported through the modulation of source unit, and to the signal
Light beam exports after carrying out collimator and extender.
Based on the above technical solution, second optical path unit includes:
Energy spectroscope is used to receive the signal light of the spectrum mirror output and is reflected and transmitted, respectively
Form reflected light and transmitted light；
Avalanche photodide APD, is used to receive the reflected light of energy spectroscope output, and by optical signal
It is converted into electric signal；
Demodulating unit is used to receive the electric signal after APD conversion, and decodes to the electric signal
The satellite platform is transmitted to after reduction.
Based on the above technical solution, the CCD camera is located at the spectroscopical lower section of the energy, and for receiving
The transmitted light formed after energy spectroscope transmission.
Based on the above technical solution, the satellite laser communications device further includes lens subassembly, the lens group
Part includes:
First lens group, be set between the spectrum mirror and optical fiber collimator, first lens group for pair
The signal light for being transmitted to the spectrum mirror from the optical fiber collimator carries out collimation and shaping；
Second lens group is set between the energy spectroscope and APD, and second lens group is used for from the energy
The reflected light that amount spectroscope is transmitted to the APD is focused；
The third lens group is set between the energy spectroscope and CCD camera, and the third lens group is used for from institute
It states energy spectroscope and is transmitted to the transmitted light of the CCD camera and be focused.
Based on the above technical solution, the satellite laser communications device further includes thermal control module, the thermal control mould
Block includes:
Scattering surface is used for the heat dissipation of the galvanometer, modulation of source unit and periscopic servo mechanism；
Thermistor is used to monitor the common optical pathways unit, the first optical path unit, the second optical path unit and periscopic
The temperature of servo mechanism；
Electric heater is used for the common optical pathways unit, the first optical path unit, the second optical path unit and periscopic servo
The heating of mechanism.
Based on the above technical solution, the satellite laser communications device further includes control module, the control mould
Block is for the power management of the satellite laser communications device, thermal control management and status monitoring control management.
Based on the above technical solution, the control module includes:
Power supply control unit is used to provide power supply for the satellite laser communications device；
System control unit, is used to monitor the working condition of the satellite laser communications device in real time, and is instructed
Control；
Thermal control control unit is used to control the operation of the thermal control module.
Based on the above technical solution, the control module, modulation of source unit, demodulating unit, smart tracking cell
It is respectively positioned in electric cabinet with rough tracking unit.
Compared with the prior art, the advantages of the present invention are as follows:
(1) the present invention provides a kind of small-sized satellite laser communications device, the letter that will be received by energy spectroscope
Number light beam is divided into two bundles, a branch of to be used for communication detecting, a branch of to be used for position sensing, passes through satellite laser communications device single
Laser can realize the function of signal light and beacon beam simultaneously；On the other hand, in the present apparatus, it is equipped with common optical pathways unit,
When transmitting and reception signal, transmitting signal and reception signal transmit in common optical pathways unit simultaneously, simplify light channel structure, just
In the volume for mitigating satellite laser communications device, small-sized design is realized.
(2) the present invention provides a kind of small-sized satellite laser communications device, wherein rough tracking unit and smart tracking cell
A CCD camera is shared, realizes the detection of thick, smart tracing positional using single location detector by control windowing；In addition, this
Device uses the light source of 780nm/850nm wave band, so that the volume of communication module is become smaller, does not need using elements such as image intensifers,
By using the above technology, the volume and weight of satellite laser communications device can be made to obtain and optimized to the limit, small defend is met
The carrying demand of star.
Detailed description of the invention
Fig. 1 is the structural block diagram of the small-sized satellite laser communications device in the embodiment of the present invention；
Fig. 2 is the functional block diagram of the small-sized satellite laser communications device in the embodiment of the present invention.
In figure: 1- optical telescope, 20- galvanometer, 21- spectrum mirror, 3- Photoelectric Tracking and Aiming module, 30- periscopic servo
Mechanism, 31- essence tracking cell, 32- rough tracking unit, 33- charge coupled cell CCD camera, 40- modulation of source unit, 41- light
Fine collimator, 50- energy spectroscope, 51- avalanche photodide APD, 52- demodulating unit, the first lens group of 60-, 61- second
Lens group, 62- the third lens group, 7- thermal control module, 8- control module, 80- power supply control unit, 81- system control unit,
82- thermal control control unit.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Shown in Figure 1, the embodiment of the present invention provides a kind of small-sized satellite laser communications device, and the present apparatus is according to function
Module can be divided into communication module, optical module, Photoelectric Tracking and Aiming module 3, thermal control module and manage module 8, between five modules
It cooperates and realizes the transmitting and reception of satellite platform information, and emit and generally carried out simultaneously with reception.Specifically, communication module
Including communication transmitting submodule and communications reception submodule；Optical module includes that optical path relaying submodule and optics are looked in the distance submodule
Block；Photoelectric Tracking and Aiming module 3 includes rough tracking unit 32 and smart tracking cell 31.
As shown in Fig. 2, communication transmitting submodule receives signal from satellite platform, and will receive when sending information
Signal after Laser Modulation loads and to form signal light, be incident to optical path relaying submodule on, optical path relaying submodule will connect
The signal light received is transmitted to optical telescope after carrying out beam-expanding collimation, and optical telescope is sent out after carrying out beam-expanding collimation to signal light
It is exported after being incident upon space, recipient is waited to receive.When receiving information, optical telescope will communicate with the reception of cooperation first
The signal light just emitted is received and is focused, and signal light is then transmitted to optical path relaying submodule, and optical path relays submodule
Light splitting is reflected signal light and transmitted, reflected light and transmitted light are formed simultaneously, wherein reflected light enters communications reception submodule
Signal light is subjected to decoding after block and is reduced into the receivable raw information of satellite platform, transmitted light then enters rough tracking unit and essence
Tracking cell 31 carries out position positioning.
As Figure 1-Figure 2, communication transmitting submodule mainly includes modulation of source unit 40 and optical fiber collimator 41, light source
Modulation unit 40 is specifically made of light source and modulation subunit, and when satellite platform needs to emit signal, modulation subunit need to
The signal to be occurred is modulated and is loaded on light source, is incident on optical fiber collimator 41 by way of signal light.Here
Light source is laser emitter, and it is the laser emitter of 780nm/850nm wave band, compared to its all band, this wave band
Laser emitter is small in size, light-weight, is conducive to the volume and weight of alleviator itself.Laser emitter and optical fiber collimator
It is connected between 41 by optical fiber, optical fiber collimator 41 is after receiving the signal light that laser emitter transmits, to signal light
It is exported after carrying out collimator and extender by space.Modulation of source unit 40 and the first optical path unit of composition of optical fiber collimator 41, first
Optical path unit is mainly used for the signal transmitting transmission of device when transmitting signals.
As Figure 1-Figure 2, optical module mainly includes some optical elements, galvanometer 20, spectrum mirror 21 and energy
Spectroscope 50, wherein galvanometer 20 is mainly used for the fine tuning to received signal light direction, guarantees each element in device
Signal light accurate can be received, guarantees good communication when communication between transmitting terminal and receiving end, galvanometer 20 is in the present apparatus
Middle fertilization tracking cell 31 controls.Spectrum mirror 21 is mainly used for carrying out the wave band in different wave length respectively transmission and anti-
It penetrates, is carried out simultaneously since device receives and emitted when being communicated, it can will often be sent out when communication
It penetrates light and receives the different wavelength of gloss, when emitting light by spectrum mirror 21, it may occur that reflection, the light after reflection will
Galvanometer 20 is transmitted to continue signal light to be transmitted to optics after galvanometer 20 receives the signal light reflected to spectrum mirror 21
On telescope 1, optical telescope 1 receives the signal light transmitted to galvanometer 20, passes through after carrying out further beam-expanding collimation
Spatial emission is gone out, and receiving end is waited to receive.
Energy spectroscope 50 is set to the lower section of spectrum mirror 21, is located across the transmission of the signal light of spectrum mirror 21
On optical circuit path, two different optical paths are in from optical fiber collimator 41.When device receives signal, satellite laser communications device
It is then used as receiving end at this time, the signal light that transmitting terminal emits is collected and is focused by optical telescope 1, extremely by space propagation
On galvanometer 20, galvanometer 20 is transmitted to spectrum mirror 21 after being finely adjusted the direction of the signal light received.When 330 receiving
When signal light passes through spectrum mirror 21, it may occur that transmission avoids received signal light enters transmitting signal light first
In optical path unit, guarantee going on smoothly for communication.Reception signal light after the transmission of spectrum mirror 21 is transmitted to energy point
Light microscopic 50, the reception signal light that energy spectroscope 50 is mainly used for receive is reflected and is transmitted, by reflecting and transmiting
Afterwards, it receives signal light and is divided into transmitted light and reflected light, wherein reflected light enters communications reception submodule, and transmitted light is then
Into Photoelectric Tracking and Aiming module 3, the reception of signal light is completed in common cooperation.
As Figure 1-Figure 2, communications reception submodule mainly includes avalanche photodide APD51 and demodulating unit 52,
APD51 is located on the optical circuit path of the reflected light of energy spectroscope 50, when the reception signal light received passes through energy spectroscope
After 50 reflect to form reflected light, APD51 receives reflected light, and the optical signal of reflected light is carried out conversion and becomes corresponding
Electric signal, then by the electric signal transmission after conversion to demodulating unit 52, demodulating unit 52 makes decisions the electric signal received
And decoding, the raw information of original transmitted is restored to satellite platform.Here, APD51 and demodulating unit 52 constitute the second optical path
Unit, the second optical path unit are mainly used for signal of the device when receiving signal and receive transmission work.
As Figure 1-Figure 2, Photoelectric Tracking and Aiming module 3 is mainly watched including smart tracking cell 31, rough tracking unit 32, periscopic
Take mechanism 30 and charge coupled cell CCD camera 33.Photoelectric Tracking and Aiming module 3 is mainly used for device and is emitting and receiving the signal time
The adjustment on road.When receiving information, smart tracking cell 31 is mainly used for controlling the angle of galvanometer 20, realizes received to galvanometer 20
The low-angle high-precision in the direction of signal light adjusts, and rough tracking unit 32 is mainly used for controlling turning for periscopic servo mechanism 30
Dynamic, periscopic servo mechanism 30 is set on optical telescope 1, before optical telescope 1, is sheathed on optical telescope 1
On, and with 1 common optical axis of optical telescope, the big angle to received signal light direction is able to achieve under the control of rough tracking unit 32
The adjustment of degree.CCD camera 33 is located on the optical circuit path of the transmitted light of energy spectroscope 50, receives signal light and is divided by energy
Mirror 50 occurs after transmission forms transmitted light, and CCD camera 33 carries out imaging after transmitted light to receiving to it, and will be after imaging
Image information be transmitted to Photoelectric Tracking and Aiming module 3, realize position sensing.
Specifically, before device receives signal, since there may be position deviations for receiving end and transmitting terminal, at this point, slightly with
Track unit 32 is in the open state, and rough tracking unit 32 controls the rotation of periscopic servo mechanism 30, captures to signal light.
Correspondingly, CCD camera 33 opens big window when carrying out rough tracking, the reception signal light after capture pass sequentially through optical telescope 1,
It is transmitted in CCD camera 33 after galvanometer 20, spectrum mirror 21 and energy spectroscope 50, CCD camera 33 is to the signal received
After light carries out low frequency imaging, image information is transmitted to rough tracking unit 32, rough tracking unit 32 passes through image information
Processing calculates miss distance of luminous spot.It is adjusted according to the miss distance of luminous spot actually calculated, if miss distance has been more than the model of accurate adjustment
It encloses, then the first empty rotation for crossing rough tracking adjustment periscopic servo mechanism 30, restarts smart tracking cell 31, carry out accurate adjustment；If light
Spot miss distance in the range of accurate adjustment, then directly carries out accurate adjustment.
When carrying out accurate adjustment, CCD camera 33 opens small window, carries out high frequency imaging to incident signal light, then high frequency is imaged
Image information afterwards is transmitted to smart tracking cell 31, and smart tracking cell 31 calculates miss distance of luminous spot after passing through image procossing, according to
The miss distance of luminous spot control galvanometer 20 of calculating rotates, to realize the fine tuning in signal beams direction.
According to the above, galvanometer 20 and spectrum mirror 21 constitute common optical pathways unit, are received and are sent out in device
When penetrating signal light, signal light is required by common optical pathways unit, emit light and receive light spectrum Jing21Chu successively into
Enter the first optical path unit and the second optical path unit, optical path will be emitted compared to conventional apparatus and receiving light path is arranged to two completely
Independent light path system emits here and receives shared one section of optical path unit, the optical path setting of device is enormously simplified, to subtract
The light weight and volume of device itself, reduces the cost of transmitting, suitable for small-sized satellite.
Further, the signal beams received are divided into two bundles by the present apparatus by energy spectroscope 50, a branch of for leading to
Letter, it is a branch of to be used for position sensing, so that satellite laser communications device is realized signal light and beacon simultaneously by single laser
The function of light, in addition, smart tracking cell 31 and rough tracking unit 32 share the same CCD camera 33, above design can be
The structure for largely simplifying the present apparatus itself, makes it have small-sized feature.
Further, satellite laser communications device further includes lens subassembly, and lens subassembly includes three lens cluster group, respectively
First lens group 60, the second lens group 61 and the third lens group 62.Wherein, the first lens group 60 is set to spectrum mirror 21 and light
Between fine collimator 41, it is mainly used for carrying out the signal light for being transmitted to spectrum mirror 21 from optical fiber collimator 41 collimation and whole
Shape；Second lens group 61 is set between energy spectroscope 50 and APD51, is mainly used for being transmitted to from energy spectroscope 50
The reflected light of APD51 is focused；The third lens group 62 is set between energy spectroscope 50 and CCD camera 33, is mainly used for pair
The transmitted light for being transmitted to CCD camera 33 from energy spectroscope 50 is focused.The setting of lens subassembly in device so that transmit
Signal light is more stable, is conducive to the mutual transmission between all parts, guarantees going on smoothly for communication.
As Figure 1-Figure 2, satellite laser communications device further includes thermal control module 7, and thermal control module 7 is mainly used for device
Heating or heat dissipation.Since the running environment of device is located at the outer space, environment temperature is unstable, is easy to appear high temperature or low temperature
Extreme environment, if radiating not in time, may be damaged in addition, some components are easy to produce heat to device in the process of running
Bad component, as it is irreversible curved to may result in mirror surface generation if radiating not in time for spectrum mirror 21 and energy spectroscope 50
Song seriously affects the function of device, therefore, thermal control module 7 there are necessary.
Thermal control module 7 mainly include scattering surface, thermistor and electric heater, wherein scattering surface be mainly used for galvanometer 20,
The heat dissipation of modulation of source unit 40 and periscopic servo mechanism servo mechanism 30 because 20 moment of galvanometer be in rotation or vibration
State, so being also easy to produce heat, the laser emitter in modulation of source unit 40 is then easy to produce heat, periscopic servo mechanism
30, similarly due to being equipped with motor, may generate high temperature, scattering surface is by structure heat transfer to these heat sources after long-play
Effectively radiated.Thermistor and electric heater cooperate, and thermistor is mainly used for monitoring common optical pathways unit, the
The temperature of one optical path unit, the second optical path unit and periscopic servo mechanism relevant position, after feeding back to electric heater, electric heating
Device is then used for the heating of corresponding position.Because the theoretical work temperature of optical module is at 20 DEG C or so, if temperature is too low or excessively high,
It then will affect the transmission of signal light, to influence the normal operation of communication.
As Figure 1-Figure 2, satellite laser communications device further includes control module 8, and control module 8 is mainly used for satellite and swashs
Power management, thermal control management and the status monitoring control management of optical communication apparatus, manage module 8 and specifically include power supply control unit
80, system control unit 81 and thermal control control unit 82.Wherein, power supply control unit 80 is mainly used for as satellite laser communications dress
The component for each needs power supply set provides power supply；System control unit 81 is mainly used for real-time surveillance satellite laser communication dress
The working condition of each component is set, according to the actual situation with specific works state, to a component and carries out instruction control, phase
Mutually cooperation, realizes the purpose of communication；Thermal control control unit 82 is mainly used for controlling the operation of thermal control module 7, assists thermal control module 7
Temperature control is carried out to device.
Further, module 8, modulation of source unit 40, demodulating unit 52, smart tracking cell 31 and rough tracking unit are managed
32 are respectively positioned in electric cabinet, there is certain protective effect to each unit, and concentration is also convenient for managing.
In conclusion when transmitting signals, modulation of source unit 40 receives the signal that satellite platform needs to emit, will need
The signal of transmitting, which is modulated, to be loaded on light source, is incident on optical fiber collimator 41 by way of signal light, fiber optic collimator
Device 41 after receiving the signal light that laser emitter transmits, to signal light carry out collimator and extender after by space export to
Spectrum mirror 21, spectrum mirror 21 carry out the signal light received to reflex to galvanometer 20, and galvanometer 20 is in Photoelectric Tracking and Aiming mould
It is transmitted to after being finely adjusted under the control of block 3 to the direction of the signal light received on optical telescope 1, optical telescope 1 connects
The signal light transmitted to galvanometer 20 is received, is gone out after carrying out further beam-expanding collimation by spatial emission, receiving end is waited
It receives, battery has fired.The present apparatus when emitting signal light, signal light mainly pass through the first optical path unit, common optical pathways unit and
Optical telescope, the first optical path unit, common optical pathways unit and optical telescope constitute transmitting optical circuit path.
When receiving signal, rough tracking unit 32 first controls the rotation of periscopic servo mechanism 30, catches to signal light
Tracking is obtained, the signal light after acquisition and tracking is transmitted to galvanometer 20 after focusing by optical telescope 1, and galvanometer 20 is to the letter received
The direction of number light is transmitted on spectrum mirror 21 after being finely adjusted, and spectrum mirror 21 generates transmission to receiving light at this time, is connect
It receives signal light to be transmitted on energy spectroscope 50 after the transmission of spectrum mirror 21, transmission of the energy spectroscope 50 to receiving
Light carries out reflection and transmission is respectively formed transmitted light and reflected light, and wherein transmitted light is transmitted in CCD camera 33 and carries out at imaging
Reason realizes position sensing, and reflected light is then transmitted on APD51, and APD51 converts telecommunications from optical signal for the reflected light received
Number, then by electric signal transmission to demodulating unit 52, the electric signal received is made decisions and is decoded by last demodulating unit 52, it will
Electric signal is reduced to raw information, is transmitted to satellite platform, receives.For the present apparatus when receiving signal light, signal light is main
Pass through optical telescope, common optical pathways unit and the second optical path unit, optical telescope, common optical pathways unit and the second optical path list
Member constitutes receiving light path path.
The present invention is not only limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
The product of kind form, however, make any variation in its shape or structure, it is all with identical or similar with the present invention
Technical solution, within its protection scope.
Claims (10)
1. a kind of small-sized satellite laser communications device, is used for the reception and transmitting of satellite platform information, it is characterised in that:
Optical telescope (1) is used for the transmitting and reception of signal light；
Common optical pathways unit, the common optical pathways are equipped with galvanometer (20) and spectrum mirror (21)；
First optical path unit, the information load-modulate to be transmitted for being used to input satellite platform form signal light, the signal
Light passes sequentially through the spectrum mirror (21) and galvanometer (20) is transmitted to the optical telescope (1) and exports afterwards；
Second optical path unit, successively by the galvanometer (20) and spectrum point after being used to receive the optical telescope (1)
The signal light of light microscopic (21) is converted into electric signal by optical signal, and is transmitted to described defend after carrying out decoding reduction to the electric signal
Star platform.
2. a kind of small-sized satellite laser communications device as described in claim 1, which is characterized in that the satellite laser communications
Device further includes Photoelectric Tracking and Aiming module (3), and the Photoelectric Tracking and Aiming module (3) includes:
Periscopic servo mechanism (30), be set to the optical telescope (1) on, and with the optical telescope (1) common optical axis；
Smart tracking cell (31) is used to control the angle of the galvanometer (20), realizes to the galvanometer (20) received signal
The adjustment in the direction of light；
Rough tracking unit (32) is used to control periscopic servo mechanism (30) rotation；
Charge coupled cell CCD camera (33) is used to receive and transmit on first optical path unit and the second optical path unit
Part signal light, and the received part signal light carried out be transmitted to again after imaging the smart tracking cell (31) and
Rough tracking unit (32).
3. a kind of small-sized satellite laser communications device as claimed in claim 2, which is characterized in that first optical path unit
Include:
Modulation of source unit (40), is used to receive the information of the satellite platform input, and the information load-modulate is arrived
On signal light；
Optical fiber collimator (41) is used to receive the signal light exported through the modulation of source unit (40), and to described
Signal beams export after carrying out collimator and extender.
4. a kind of small-sized satellite laser communications device as claimed in claim 3, which is characterized in that second optical path unit
Include:
Energy spectroscope (50) is used to receive the signal light of spectrum mirror (21) output and is reflected and transmitted,
It is respectively formed reflected light and transmitted light；
Avalanche photodide APD (51), is used to receive the reflected light of the energy spectroscope (50) output, and by light
Signal is converted into electric signal；
Demodulating unit (52) is used to receive the electric signal after the APD (51) conversion, and carries out to the electric signal
The satellite platform is transmitted to after decoding reduction.
5. a kind of small-sized satellite laser communications device as claimed in claim 4, it is characterised in that: the CCD camera (33)
Positioned at the lower section of the energy spectroscope (50), and for receives through the energy spectroscope (50) transmit after formed it is described
Penetrate light.
6. a kind of small-sized satellite laser communications device as claimed in claim 5, which is characterized in that the satellite laser communications
Device further includes lens subassembly, and the lens subassembly includes:
First lens group (60) is set between the spectrum mirror (21) and optical fiber collimator (41), first lens
Group (60) be used for the signal light for being transmitted to the spectrum mirror (21) from the optical fiber collimator (41) carry out collimation and it is whole
Shape；
Second lens group (61) is set between the energy spectroscope (50) and APD (51), and second lens group (61) is used
It is focused in the reflected light for being transmitted to the APD (51) from the energy spectroscope (50)；
The third lens group (62) is set between the energy spectroscope (50) and CCD camera (33), the third lens group
(62) for being focused to the transmitted light for being transmitted to the CCD camera (33) from the energy spectroscope (50).
7. a kind of small-sized satellite laser communications device as described in claim 1, which is characterized in that the satellite laser communications
Device further includes thermal control module (7), and the thermal control module (7) includes:
Scattering surface is used for the heat dissipation of the galvanometer (20), modulation of source unit (40) and periscopic servo mechanism (30)；
Thermistor is used to monitor the common optical pathways unit, the first optical path unit, the second optical path unit and periscopic servo
The temperature of mechanism (30)；
Electric heater is used for the common optical pathways unit, the first optical path unit, the second optical path unit and periscopic servo mechanism
(30) heating.
8. a kind of small-sized satellite laser communications device as claimed in claim 7, it is characterised in that: the satellite laser communications
Device further includes control module (8), and control module (8) is used for the power management of the satellite laser communications device, thermal control
Management and status monitoring control management.
9. a kind of small-sized satellite laser communications device as claimed in claim 8, which is characterized in that the control module (8)
Include:
Power supply control unit (80) is used to provide power supply for the satellite laser communications device；
System control unit (81), is used to monitor the working condition of the satellite laser communications device in real time, and is instructed
Control；
Thermal control control unit (82) is used to control the operation of the thermal control module (7).
10. a kind of small-sized satellite laser communications device as claimed in claim 9, it is characterised in that: the control module
(8), modulation of source unit (40), demodulating unit (52), smart tracking cell (31) and rough tracking unit (32) are respectively positioned on electric cabinet
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163363.1A CN109167632B (en) | 2018-09-30 | 2018-09-30 | Satellite laser communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163363.1A CN109167632B (en) | 2018-09-30 | 2018-09-30 | Satellite laser communication device |
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Cited By (7)
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| CN110098874A (en) * | 2019-05-17 | 2019-08-06 | 中国科学院上海技术物理研究所 | The a wide range of directing quantum communications electro-optical device of polarization-maintaining and method based on U-shaped optical path |
| CN110830116A (en) * | 2019-11-26 | 2020-02-21 | 中国电子科技集团公司第五十四研究所 | Wireless optical communication receiving/transmitting terminal and relay and time division receiving/transmitting method |
| CN111865417A (en) * | 2019-04-24 | 2020-10-30 | 南京航星通信技术有限公司 | Satellite-ground satellite laser communication terminal facing cube star |
| CN113612534A (en) * | 2021-07-01 | 2021-11-05 | 中国科学院西安光学精密机械研究所 | Optical system of miniaturized space laser communication terminal and use method |
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| CN116566493A (en) * | 2023-05-27 | 2023-08-08 | 星遥光宇(常州)科技有限公司 | Laser communication terminal based on single camera |
| CN116781168A (en) * | 2023-06-14 | 2023-09-19 | 蓝星光域(上海)航天科技有限公司 | Integrated laser communication terminal |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111865417A (en) * | 2019-04-24 | 2020-10-30 | 南京航星通信技术有限公司 | Satellite-ground satellite laser communication terminal facing cube star |
| CN110098874A (en) * | 2019-05-17 | 2019-08-06 | 中国科学院上海技术物理研究所 | The a wide range of directing quantum communications electro-optical device of polarization-maintaining and method based on U-shaped optical path |
| CN110098874B (en) * | 2019-05-17 | 2023-12-26 | 中国科学院上海技术物理研究所 | Polarization-maintaining large-range pointing quantum communication optical device and method based on U-shaped optical path |
| CN110830116A (en) * | 2019-11-26 | 2020-02-21 | 中国电子科技集团公司第五十四研究所 | Wireless optical communication receiving/transmitting terminal and relay and time division receiving/transmitting method |
| CN113612534A (en) * | 2021-07-01 | 2021-11-05 | 中国科学院西安光学精密机械研究所 | Optical system of miniaturized space laser communication terminal and use method |
| CN113612534B (en) * | 2021-07-01 | 2022-05-20 | 中国科学院西安光学精密机械研究所 | Optical system of miniaturized space laser communication terminal and using method |
| CN114142942A (en) * | 2021-12-08 | 2022-03-04 | 长光卫星技术有限公司 | Large-breadth optical imaging and laser communication integrated terminal |
| CN116566493A (en) * | 2023-05-27 | 2023-08-08 | 星遥光宇(常州)科技有限公司 | Laser communication terminal based on single camera |
| CN116781168A (en) * | 2023-06-14 | 2023-09-19 | 蓝星光域(上海)航天科技有限公司 | Integrated laser communication terminal |
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