CN110224751A - Optical communication apparatus between a kind of spacecraft - Google Patents
Optical communication apparatus between a kind of spacecraft Download PDFInfo
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- CN110224751A CN110224751A CN201810165838.4A CN201810165838A CN110224751A CN 110224751 A CN110224751 A CN 110224751A CN 201810165838 A CN201810165838 A CN 201810165838A CN 110224751 A CN110224751 A CN 110224751A
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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
- H04B10/11—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
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
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- Engineering & Computer Science (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to optical communication apparatus between a kind of spacecraft, belong to laser space communication field, constitutes as follows: microphone 1, PCM encoder 2, digital signal processing unit 3, light emitting unit 4, optical antenna 5, CCD camera 6, video signal processing unit 7, digital signal processing unit 8, PCM decoder 9, loudspeaker 10.The device is designed for optic communication between spacecraft, is transmitted information using non-visible light, is effectively avoided electronic reconnaissance；Signal of communication is demodulated using ccd image processing technique, greatly reduces transmitting, receiving antenna, it is small to the transformation of spacecraft；The logical APT system of Traditional Space light is abandoned, volume and the complexity of complete machine substantially reduce；Full-duplex communication is realized, communicating pair is directly conversed by the device；Long transmission distance can reach the communication distance of 10Km, particularly suitable for communicating between spacecraft.
Description
Technical field
The invention belongs to laser space communication field, optical communication apparatus between a kind of spacecraft is designed.
Background technique
It is frequently not to work independently when spacecraft executes task, it is sometimes desirable to which group works in coordination
Ability to work is improved, they each other need to keep the unimpeded of communication.Such as armada is in flight course, between each captain
It is in communication with each other, is the premise for guaranteeing a group of planes and correctly flying.The communication device between spacecraft is concentrated mainly on nothing at present
Line and microwave communication techniques, but under modern war strong electromagnetic and Electronic Warfare Environment, during the electromagnetic-silence of prewar, wirelessly
Work with microwave communication device can be investigated by enemy arrives, and loses stealthy effect.
FreeSpace Laser Communications Technique is the technology for directly carrying out information transmission in atmosphere or outer space using laser beam.
Laser space communication with it is other communication compared with, have it is at low cost, the high feature of rate is suitably applied the structure of war communications network
It builds.Laser communication technology is due to the spies such as its monochromaticjty is good, high directivity, optical power are concentrated, be difficult to eavesdrop, at low cost, installation is fast
Point, and cause the great attention of various countries.(bibliography: Beijing He Xizheng, Xi Xiaoli wireless laser communication outline [M]: Beijing
University of Post and Telecommunication publishing house, 2004)
With the development and application of space optical communication in recent years, ground-to-ground, ground-to-air, the optical communication applications demand such as air to air
It is more and more, and traditional space optical communication system often around high-accuracy optical antenna, high stability APT system into
Row, making space optical communication system, structure is complicated, bulky, the application difficult on spacecraft, and is unable to satisfy various rings
Border condition.It yet there are no the device for carrying out optic communication between spacecraft so far, therefore, develop the light between spacecraft
A kind of device that communication device is to speed up the process of China's national defense modernization and industry is badly in need of.
Summary of the invention
For optical communication system between spacecraft, device miniaturization is important technical characterstic, and modularization is then
It is Standardization instrument, generalization and raising reliability, the major technique of maintainability basis.Reliable Laser emission connects with laser
It receives, the acquisition of video data is also all main key technology.In order to be able to achieve optic communication between spacecraft, which is also needed
Want with the following functions: (1) high speed light modulation: due to the digital information flow using high-speed, laser power driving needs to examine
Worry has sufficiently high switching speed and driving current, to protect the service life of laser and adapting to different distance and weather occasion,
It is also contemplated that the automatic control of laser power；(2) CCD small-signal receives: reliable in order to adapt to the energy under rugged environment
Reception recovering signal, realize signal detection technology；(3) Digital Signal Processing: in order to guarantee transmission reliability and lead to
Believe quality, when digital signal communication needs to carry out encoding and decoding technique.
Optical communication apparatus between spacecraft of the invention, as shown in Figure 1, its composition is as follows: microphone 1, PCM encoder 2,
Digital signal processing unit 3, light emitting unit 4, optical antenna 5, CCD camera 6, video signal processing unit 7, at digital signal
Manage unit 8, PCM decoder 9, loudspeaker 10；1-4 is sequentially connected with the transmitting unit of optical communication apparatus between composition spacecraft, 5-
10 are sequentially connected with the receiving unit of optical communication apparatus between composition spacecraft.When work, communicating pair has the device a set of.
The microphone 1: acoustic information is converted into the audio signal of simulation.
The PCM encoder 2: analog audio signal to be transmitted uses after isolation amplification and anti-aliasing filter
International pcm encoder technology completes compressed audio coding.
The digital signal processing unit 3: the transmission in order to adapt to optical signal, digital signal processing unit compile PCM
The pcm stream that code device 3 exports is converted into serial code.
The light emitting unit 4: it is continuously adjustable using output power, the laser of the switching speed with 10MHz into
The transmitting of row signal.Preferentially use wavelength for 810nm, the semiconductor laser of 850nm, output power is continuous from 5mW~200mW
It is adjustable.
The optical antenna 5: optical signal is completed to realize the light-receiving of big visual field using common wide-angle lens
Acquisition.
The CCD camera 6: using CCD as probe unit device, the optical signal for receiving optical antenna 5 is realized
It is converted into vision signal.
The video signal processing unit 7: realizing and carry out Digital Image Processing to high frame rate video signal, solves corresponding
The pixel information that includes, and exported with serial data mode.
The digital signal processing unit 8: it completes the serial data that video signal processing unit 7 exports and is converted to PCM
Code stream mode.
The PCM decoder 9: the reduction of digital signal to analog audio signal is completed.
The loudspeaker 10: for directly listening to audio-frequency information.
In launch party, the analog audio signal acquired by common microphone 1 is isolated amplification through PCM encoder 2 and is resisted mixed
After folded filtering, using international pcm encoder technology, compressed audio coding is completed, then pass through 3 turns of digital signal processing unit
It changes serial code into and is sent to the inner driving laser of laser emission element 4 sending laser；In recipient, pass through optical antenna 5 and CCD
Camera 6 converts optical signals into vision signal, carries out Digital Image Processing by video signal processing unit 7, solves corresponding
The information that pixel includes, and be output in digital signal processing unit 8 with serial data mode and be converted to pcm stream, pass through
9 decoded back of PCM decoder obtains analog audio signal, and it is inner that the collected voice signal progress of launch party is real to be sent to loudspeaker 10
When broadcasting.Due to devising intercommunication system, full-duplex voice communication is may be implemented in communicating pair.
Dynamic duty process:
(1) it is each that light emission system, CCD camera and camera lens the erection of optical antenna: are placed at spacecraft double-vane edge
It is a set of；Since aircraft is in formation flight, difference in height very little, two frame aircraft almost in the same plane, can guarantee in this way
Which kind of mutual alignment no matter two frame aircraft be in, and the light that light emission system issues can enter the CCD camera of other side
In.
(2) line: the audio output line of microphone 1 being connected on the audio input terminal of PCM encoder 2, PCM encoder 2
Output line be connected on the input terminal of digital signal processing unit 3, the output line of digital signal processing unit 3 is connected to light emitting
On the input terminal of unit 4, so far the line of emission system unit has been finished；System unit line will be similarly received to complete.
(3) system work process: powering on, and opens master switch, and system components are powered on into normal operating conditions,
System work process are as follows: in one end of communication, call personnel speak against microphone 1, the analog audio signal warp that microphone 1 acquires
After the isolation of PCM encoder 2 amplification and anti-aliasing filter, using international pcm encoder technology, compressed audio coding is completed,
Serial code is converted by digital signal processing unit 3 again and is sent to the inner driving laser of laser emission element 4 sending laser；?
The other end of communication converts optical signals into vision signal by optical antenna 5 and CCD camera 6, by video frequency signal processing list
Member 7 carries out Digital Image Processing, solves the information that corresponding pixel includes, and be output to digital signal with serial data mode
Pcm stream is converted in processing unit 8, analog audio signal is obtained by 9 decoded back of PCM decoder, is sent in loudspeaker 10,
At this moment, the personnel of recipient can hear the sound of launch party call personnel.Since the present apparatus is full-duplex communication,
Communicating pair can talk with simultaneously.
Optical communication apparatus between a kind of spacecraft of the invention has following the utility model has the advantages that (1) is directed to spacecraft
Between optic communication design, using non-visible light transmit information, effectively avoid electronic reconnaissance；(2) it uses ccd image and handles skill
Art demodulates signal of communication, greatly reduces transmitting, receiving antenna, small to the transformation of aircraft；(3) it is logical Traditional Space light has been abandoned
APT system, volume and the complexity of complete machine substantially reduce；(4) full-duplex communication is realized, communicating pair is straight by the device
Tap into capable call；(5) long transmission distance reaches the communication distance of 10Km.
Detailed description of the invention
A kind of Fig. 1 optical communication apparatus composition figure between spacecraft.
Specific embodiment
Embodiment 1
Optical communication apparatus between a kind of spacecraft of the invention, as shown in Figure 1, its composition is as follows: microphone 1, pcm encoder
Device 2, digital signal processing unit 3, light emitting unit 4, optical antenna 5, CCD camera 6, video signal processing unit 7, number letter
Number processing unit 8, PCM decoder 9, loudspeaker 10；1-4 is sequentially connected with the transmitting list of optical communication apparatus between composition spacecraft
Member, 5-10 are sequentially connected with the receiving unit of optical communication apparatus between composition spacecraft.When work, communicating pair has the device
It is a set of.
The microphone 1: acoustic information is converted into the audio signal of simulation.
The PCM encoder 2: analog audio signal to be transmitted uses after isolation amplification and anti-aliasing filter
International pcm encoder technology completes compressed audio coding.
The digital signal processing unit 3: the transmission in order to adapt to optical signal, digital signal processing unit compile PCM
The pcm stream that code device 3 exports is converted into serial code.
The light emitting unit 4: it is continuously adjustable using output power, the laser of the switching speed with 10MHz into
The transmitting of row signal.Preferentially use wavelength for 810nm, the semiconductor laser of 850nm, output power is continuous from 5mW~200mW
It is adjustable.
The optical antenna 5: optical signal is completed to realize the light-receiving of big visual field using common wide-angle lens
Acquisition.
The CCD camera 6: using CCD as probe unit device, the optical signal for receiving optical antenna 5 is realized
It is converted into vision signal.
The video signal processing unit 7: realizing and carry out Digital Image Processing to high frame rate video signal, solves corresponding
The pixel information that includes, and exported with serial data mode.
The digital signal processing unit 8: it completes the serial data that video signal processing unit 7 exports and is converted to PCM
Code stream mode.
The PCM decoder 9: the reduction of digital signal to analog audio signal is completed.The loudspeaker 10: for straight
Audio-frequency information is listened in reception.
In launch party, the analog audio signal acquired by common microphone 1 is isolated amplification through PCM encoder 2 and is resisted mixed
After folded filtering, using international pcm encoder technology, compressed audio coding is completed, then pass through 3 turns of digital signal processing unit
It changes serial code into and is sent to the inner driving laser of laser emission element 4 sending laser；In recipient, pass through optical antenna 5 and CCD
Camera 6 converts optical signals into vision signal, carries out Digital Image Processing by video signal processing unit 7, solves corresponding
The information that pixel includes, and be output in digital signal processing unit 8 with serial data mode and be converted to pcm stream, pass through
9 decoded back of PCM decoder obtains analog audio signal, and it is inner that the collected voice signal progress of launch party is real to be sent to loudspeaker 10
When broadcasting.Due to devising intercommunication system, full-duplex voice communication is may be implemented in communicating pair.
Dynamic duty process:
(1) it is each that light emission system, CCD camera and camera lens the erection of optical antenna: are placed at spacecraft double-vane edge
It is a set of；Since aircraft is in formation flight, difference in height very little, two frame aircraft almost in the same plane, can guarantee in this way
Which kind of mutual alignment no matter two frame spacecrafts be in, and the light that light emission system issues can enter the CCD phase of other side
In machine.
(2) line: microphone 1 uses Philip (PHILIPS) model SHM1000 microphone；Loudspeaker 10, which use, flies benefit
The active audio amplifier of Pu (PHILIPS) model SPA3350；CCD camera 6 uses model C ONTOUR-IR.By the audio of microphone 1
Output line is connected on the audio input terminal of PCM encoder 2, and the output line of PCM encoder 2 is connected to digital signal processing unit 3
Input terminal on, the output line of digital signal processing unit 3 is connected on the input terminal of light emitting unit 4, so far transmitting system
The line of system unit has finished；System unit line will be similarly received to complete.
(3) system work process: powering on, and opens master switch, and system components are powered on into normal operating conditions,
System work process are as follows: in one end of communication, call personnel speak against microphone 1, the analog audio signal warp that microphone 1 acquires
After the isolation of PCM encoder 2 amplification and anti-aliasing filter, using international pcm encoder technology, compressed audio coding is completed,
Serial code is converted by digital signal processing unit 3 again and is sent to the inner driving laser of laser emission element 4 sending laser；?
The other end of communication converts optical signals into vision signal by optical antenna 5 and CCD camera 6, by video frequency signal processing list
Member 7 carries out Digital Image Processing, solves the information that corresponding pixel includes, and be output to digital signal with serial data mode
Pcm stream is converted in processing unit 8, analog audio signal is obtained by 9 decoded back of PCM decoder, is sent in loudspeaker 10,
At this moment, the personnel of recipient can hear the sound of launch party call personnel.Since the present apparatus is full-duplex communication,
Communicating pair can talk with simultaneously.
Embodiment 2
Optical communication apparatus between a kind of spacecraft as described in Example 1, the laser emission element 4: using sharp
Optical output power is continuously adjustable, and the laser of the switching speed with 10MHz carries out the transmitting of signal.Use wavelength for 850nm
Semiconductor laser, output power is continuously adjustable from 5mW~200mW.
Embodiment 3
Optical communication apparatus between a kind of spacecraft as described in Example 1, the laser emission element 4: using sharp
Optical output power is continuously adjustable, and the laser of the switching speed with 10MHz carries out the transmitting of signal.Use wavelength for 810nm
Semiconductor laser, output power is continuously adjustable from 5mW~200mW.
Claims (4)
1. optical communication apparatus between a kind of spacecraft of the invention, which is characterized in that its composition is as follows: microphone 1, pcm encoder
Device 2, digital signal processing unit 3, light emitting unit 4, optical antenna 5, CCD camera 6, video signal processing unit 7, number letter
Number processing unit 8, PCM decoder 9, loudspeaker 10；1-4 is sequentially connected with the transmitting list of optical communication apparatus between composition spacecraft
Member, 5-10 are sequentially connected with the receiving unit of optical communication apparatus between composition spacecraft；When work, communicating pair has the device
It is a set of；
The microphone 1: acoustic information is converted into the audio signal of simulation；
The PCM encoder 2: analog audio signal to be transmitted is after isolation amplification and anti-aliasing filter, using the world
General pcm encoder technology completes compressed audio coding；
The digital signal processing unit 3: the transmission in order to adapt to optical signal, digital signal processing unit is by PCM encoder 3
The pcm stream of output is converted into serial code；
The light emitting unit 4: continuously adjustable using output power, the laser of the switching speed with 10MHz carries out letter
Number transmitting, preferentially use wavelength for 810nm, the semiconductor laser of 850nm, output power continuously may be used from 5mW~200mW
It adjusts；
The optical antenna 5: the acquisition of optical signal is completed to realize the light-receiving of big visual field using common wide-angle lens；
The CCD camera 6: using CCD as probe unit device, realize that the optical signal for receiving optical antenna 5 is converted
At vision signal；
The video signal processing unit 7: it realizes and Digital Image Processing is carried out to high frame rate video signal, solve corresponding picture
The information that vegetarian refreshments includes, and exported with serial data mode；
The digital signal processing unit 8: it completes the serial data that video signal processing unit 7 exports and is converted to pcm stream
Mode；
The PCM decoder 9: the reduction of digital signal to analog audio signal is completed；
The loudspeaker 10: for directly listening to audio-frequency information；
In launch party, the analog audio signal acquired by common microphone 1 is through the isolation of PCM encoder 2 amplification and anti-aliasing filter
After wave, using international pcm encoder technology, compressed audio coding is completed, then be converted by digital signal processing unit 3
Serial code is sent to the inner driving laser of laser emission element 4 and issues laser；In recipient, pass through optical antenna 5 and CCD camera
6 convert optical signals into vision signal, carry out Digital Image Processing by video signal processing unit 7, solve corresponding pixel
The information that point includes, and be output in digital signal processing unit 8 with serial data mode and be converted to pcm stream, it is solved by PCM
Code 9 decoded back of device obtains analog audio signal, and it is inner that the collected voice signal progress of launch party is real-time to be sent to loudspeaker 10
It plays；Due to devising intercommunication system, full-duplex voice communication is may be implemented in communicating pair.
2. optical communication apparatus between a kind of spacecraft as described in claim 1, which is characterized in that the Laser emission list
Member 4: continuously adjustable using laser output power, the laser of the switching speed with 10MHz carries out the transmitting of signal, using wave
The semiconductor laser output power of a length of 810nm is continuously adjustable from 5mW~200mW.
3. optical communication apparatus between a kind of spacecraft as described in claim 1, which is characterized in that the Laser emission list
Member 4: continuously adjustable using laser output power, the laser of the switching speed with 10MHz carries out the transmitting of signal, using wave
The semiconductor laser output power of a length of 850nm is continuously adjustable from 5mW~200mW.
4. optical communication apparatus between a kind of spacecraft as described in claim 1, which is characterized in that at the vision signal
Reason unit 7, which is able to achieve, carries out Digital Image Processing to high frame rate video signal, solves the information that corresponding pixel includes, and with
Serial data mode output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165838.4A CN110224751A (en) | 2018-03-01 | 2018-03-01 | Optical communication apparatus between a kind of spacecraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810165838.4A CN110224751A (en) | 2018-03-01 | 2018-03-01 | Optical communication apparatus between a kind of spacecraft |
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| CN110224751A true CN110224751A (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810165838.4A Pending CN110224751A (en) | 2018-03-01 | 2018-03-01 | Optical communication apparatus between a kind of spacecraft |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656574A (en) * | 2009-07-21 | 2010-02-24 | 中国船舶重工集团公司第七一七研究所 | Portable wireless laser communication terminal machine |
| CN202856752U (en) * | 2012-10-24 | 2013-04-03 | 陕西烽火通信技术有限公司 | Shortwave duplex communication system |
| US20170111136A1 (en) * | 2014-03-27 | 2017-04-20 | Nec Corporation | Optical communication device, optical communication system and optical communication method |
-
2018
- 2018-03-01 CN CN201810165838.4A patent/CN110224751A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656574A (en) * | 2009-07-21 | 2010-02-24 | 中国船舶重工集团公司第七一七研究所 | Portable wireless laser communication terminal machine |
| CN202856752U (en) * | 2012-10-24 | 2013-04-03 | 陕西烽火通信技术有限公司 | Shortwave duplex communication system |
| US20170111136A1 (en) * | 2014-03-27 | 2017-04-20 | Nec Corporation | Optical communication device, optical communication system and optical communication method |
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Application publication date: 20190910 |
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