CN204721356U - A kind of light of Technology for Spatial Information System network and Microwave Hybrid transmission system - Google Patents
A kind of light of Technology for Spatial Information System network and Microwave Hybrid transmission system Download PDFInfo
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Abstract
The utility model discloses a kind of light and Microwave Hybrid transmission system of Technology for Spatial Information System network.The utility model comprises ground R-T unit and satellite R-T unit.Ground R-T unit comprise ground glazing and microwave signal emission system, glazing and microwave signal receiving system, on the ground pointing subsystem, on the ground the pointing subsystem emission system that controls ground glazing and microwave signal respectively by microwave decision signal and light transmitting antenna pose adjustment signal respectively with glazing and microwave signal receiving system; Satellite R-T unit comprises the reception of satellite glazing and microwave signal and exchanges pointing subsystem on repeater system, satellite glazing and microwave signal emission system, satellite, on satellite pointing subsystem respectively with the reception of satellite glazing and microwave signal and exchange repeater system, satellite glazing is connected with microwave signal emission system.While the communication of the utility model continuous data transmission, add the transmission rate of system, improve power system capacity.
Description
Technical field
The utility model relates to the communication technology neck of Information Network, relates to a kind of light and Microwave Hybrid transmission system of Technology for Spatial Information System network particularly.
Background technology
Along with improving constantly of socialization extent of information, on the one hand user constantly increases high-speed multimedia service demand, on the other hand earthquake relief work, military struggle etc. hot spot region information is obtained ageing, directionality, flexibility requirement also more and more higher.This just requires following satellite communication system, the polytype satellite system in different track and same rail and aerocraft system near the ground can be realized, according to space resources and position optimization configuration, interconnection, form dynamic intelligent system and spatial information net, thus reduce satellite network to the degree of dependence on ground, in more flexibly and efficiently mode for Global Subscriber provides service.
Information Network with the geo-stationary orbit earth satellite GEO of relative ground static (Geosynchronous Earth Orbit) and stratospheric airship (or balloon) for backbone network, medium and low earth orbit satellites MEO/LEO (Low Earth Orbit, Medium Earth Orbit), have people/unmanned aerial vehicle, ground station as Access Layer node and terminal access backbone network, realize many satellites, many gateway stations, and the interconnecting of space station, provide better communication support [10-15] for various space tasks upwards downwards.Wherein, communication satellite subnet mainly comprises various communication satellite in system, and these satellites are generally all in LEO/MEO/GEO/HEO (High Earth Orbit, High Earth Orbit), as shown in Figure 1.This system has: 1) global seamless coverage ability; 2) networking maneuverability, network topology dynamic mapping; 3) be applicable to the particular surroundingss such as satellite communication link distance, thus effectively solve the advantages such as outlying district communication issue.Obtaining academia, the showing great attention to and paying attention to of industrial quarters and the military current, is one of focus of satellite communication research.
Due to the restriction of its spatial channel characteristics, traditional satellite communication system based on microwave has the communication " rate limit " of more than 1Gb/s.The existence of these factors, the star based on microwave transmission powers on switching technology, be difficult to adapt to following at a high speed, the demand of broadband connections.Satellite communication based on laser is considered to the effective means solved the problem.Compare and the satellite system based on microwave communication, the sts satellite transmission system based on light has that power system capacity is high, transmission rate is high, transmitting-receiving volume is little, lightweight, low in energy consumption, anti-multipath fading ability strong and confidentiality advantages of higher.In real network system, realize intersatellite communication, it is one of key issue of necessary solution that star glazing exchanges.Therefore, the inexorable trend that the novel Onboard switching technology based on optical transmission system is Information Network development is explored.In addition, although there is important using value based on the communication technology of satellite of light carrier in Information Network, but in satellite in a network and ground communication process, its transmission performance affects larger by atmospheric conditions, particularly when through mist and cloud, laser signal can be intensively absorbed, and causes receiving light power greatly to weaken, and makes communication system performance variation even possibility communication failure.Under bright day gas, also for causing light intensity flicker (Scintillation), communication quality can be reduced because of atmospheric turbulance.Therefore, consider various latency, should the advantage of fully United microwave and optical communication technique, adopt the light transmission mode that coexists with microwave, mix, realize between GEO, between GEO and LEO, LEO, GEO to the various data link such as between ground, GEO to MEO, MEO and repeated link round-the-clock unimpeded.
Therefore, in order to meet the demand of future customer to high real-time mass data business, developing the Information Network based on photoelectric hybrid transmission, be the main flow direction of present satellites communication network research, and this direction is imperative.
Summary of the invention
The purpose of this utility model is for the defect in the communication technology of existing space information network, provides a kind of light and Microwave Hybrid transmission system of Technology for Spatial Information System network.
The utility model, in the good situation of external environment, adopts the transmission technology of spatial light to improve system transfer rate, adds power system capacity; Meanwhile, in the situation that external environment is bad, the transmission based on spatial light reduces system interconnect by being greatly subject to its environmental impact, adopts the transmission mechanism based on microwave under the utility model proposes this situation for this reason.Therefore, the utility model can make full use of the advantage based on light and Microwave transmission technology, while the round-the-clock uninterrupted communication of guarantee space system network, improve the rate of information throughput; The transmission system based on microwave that this system can be better compatible traditional simultaneously, certain procedures improves the extensibility of system.
The light of Technology for Spatial Information System network and a Microwave Hybrid transmission system, comprise ground R-T unit and satellite R-T unit.Ground R-T unit is set up by space link and satellite R-T unit and is contacted and communicate.Wherein, ground R-T unit comprise ground glazing and microwave signal emission system, glazing and microwave signal receiving system, on the ground pointing subsystem, on the ground the pointing subsystem emission system that controls ground glazing and microwave signal respectively by microwave decision signal and light transmitting antenna pose adjustment signal respectively with glazing and microwave signal receiving system; Satellite R-T unit comprises the reception of satellite glazing and microwave signal and exchanges pointing subsystem on repeater system, satellite glazing and microwave signal emission system, satellite, on satellite pointing subsystem respectively with the reception of satellite glazing and microwave signal and exchange repeater system, satellite glazing is connected with microwave signal emission system, for controlling reception and the transmitting of signal on satellite.
Ground glazing and microwave signal emission system comprise the signal generation unit of light and microwave, the first image intensifer, the first microwave amplifier, light transmitting antenna, the first microwave transmitting antenna, optical fiber, microwave coaxial cable line and microwave signal control unit; The signal generation unit of light and microwave comprises lightwave signal source, microwave signal source; Concrete: lightwave signal source is by Fiber connection to the first image intensifer, and the output of the first image intensifer to light transmitting antenna, thus realizes the transmitting of light signal through Fiber connection; Microwave signal source is connected to the first microwave amplifier by microwave coaxial cable line, and the output of the first microwave amplifier is connected to the first microwave transmitting antenna by microwave coaxial cable line, thus realizes the transmitting of microwave signal; Wherein microwave signal control unit, by extracting the control command on satellite R-T unit in signal, thus realizes the switching of microwave or optical signal launch;
The solution that ground glazing and microwave signal receiving system comprise the first microwave signal is in harmonious proportion processing unit, the first microwave antenna, the first fiber coupling module, the second image intensifer and the first photoelectric detector; Concrete: the signal on the ground in pointing subsystem arrives the first fiber coupling module, and the output of the first fiber coupling module, by Fiber connection to the second image intensifer, is connected to the first photodetector through the second image intensifer, thus realizes the reception of light signal; Signal on the ground in pointing subsystem is connected to the first microwave antenna, and the signal that the first microwave antenna receives is connected to the solution mediation processing unit of the first microwave signal by microwave cable coaxial line, thus completes the demodulation of microwave signal;
Preferably, lightwave signal source comprises the generation module of lightwave signal and the modulation module of lightwave signal; In the generation module of lightwave signal, the generation of lightwave signal is the mode of building based on mode or the spatial light device of fiber laser; The modulation module of lightwave signal comprises frequency microwave signal source, optical modulator and lightwave source; The output of lightwave source is connected to the optical modulator driven by frequency microwave signal source, and then completes the transmitting of lightwave signal.
Preferably, the optical modulator in the modulation module of lightwave signal comprises Mach zehnder modulators or electroluminescent Absorption modulation device;
Preferably, the photodetector in the receiving system of light and microwave signal is PIN or APD;
Preferably, the solution mediation processing unit of the first microwave signal comprises the lower conversion of microwave signal and the Base-Band Processing of signal;
The reception of satellite glazing and microwave signal and forward the receiving system that switching system comprises microwave signal on the receiving system of satellite optical signal, satellite; Wherein: the receiving system of satellite optical signal comprises light receiver aerial, the second fiber coupling module, the 3rd image intensifer and the second photodetector; The light signal of reception is coupled in optical fiber by the second fiber coupling module by light receiver aerial, signal after coupling reaches the second photodetector by the 3rd image intensifer, thus realizing the opto-electronic conversion of signal, the second photodetector output is connected to light and microwave signal exchanges forward process system; Light and microwave signal exchange forward process system and comprise the processing unit of microwave signal, base band exchange matrix, the modulating unit of light signal, the switching matrix of area of light signal, the reconstruct of data-signal and transmitter module; The processing unit of microwave signal exports a road and is connected to base band exchange matrix, and the electrical domain realizing signal exchanges; On satellite the receiving system of microwave signal comprise the reception antenna of the second microwave, microwave cable coaxial line, the second microwave signal solution be in harmonious proportion processing unit; On satellite, pointing subsystem output signal arrives to the second microwave antenna, and the signal that the second microwave antenna receives is connected to the solution mediation processing unit of the second microwave signal by microwave cable coaxial line, thus completes the demodulation of microwave signal; The signal that microwave signal process unit exports another road signal and base band exchange Output matrix enters into the modulating unit of light signal, the exchange of signal in the forwarding of settling signal and area of light in the modulating unit of light signal; Arrive reconstruct and the transmitter module of data-signal after exporting after the switching matrix of area of light signal, thus complete the exchange of light signal, forward and launch;
Preferably, the 3rd photodetector in optical signal reception system is PIN or APD;
Preferably, light and microwave signal exchange the modulating unit of the light signal in forward process system is Mach zehnder modulators or electroluminescent Absorption modulation device;
Preferably, the switching matrix of area of light signal that light and microwave signal exchange in forward process system is the optical add/drop multiplexer that forms based on passive device or the OADM device based on active device;
Preferably, on satellite microwave signal receiving system in the second microwave signal solution be in harmonious proportion processing unit comprise the lower conversion of microwave signal and the Base-Band Processing of signal;
Satellite glazing and microwave signal emission system comprise base band sources, light/microwave signal modulation module, signal amplifier and light/microwave transmitting antenna; Wherein: base band sources drives the modulation of light/microwave signal modulation module settling signal; The signal entering signal amplifier modulated realizes the amplification of signal; Signal after amplification is launched by light/microwave transmitting antenna, thus completes the transmitting of light and microwave signal;
Preferably, in satellite glazing and microwave signal emission system, base band sources comprises the generation module of lightwave signal and the modulation module of lightwave signal; In the generation module of lightwave signal, the generation of lightwave signal is the mode of building based on mode or the spatial light device of fiber laser; The modulation module of lightwave signal comprises frequency microwave signal source, optical modulator and lightwave source; The output of lightwave source is connected to the optical modulator driven by frequency microwave signal source, and then completes the transmitting of lightwave signal.
Preferably, in satellite glazing and microwave signal emission system, light/microwave signal modulation module is Mach zehnder modulators or electroluminescent Absorption modulation device;
Preferably, the signal amplifier in satellite glazing and microwave signal emission system is image intensifer or microwave amplifier, and wherein image intensifer is erbium-doped fiber amplifier, semiconductor optical amplifier or raman amplifier; When signal amplifier is microwave amplifier, it is the microwave amplifier of high power, low noise.
Compared with prior art, the utility model has following beneficial effect:
The utility model devise Technology for Spatial Information System network based on light and Microwave Hybrid transmission system.This system fully in conjunction with light and Microwave transmission technology advantage, while, continuous data transmission round-the-clock in its Information Network of guarantee communicates, can increase the transmission rate of system, improves power system capacity; In the transceiver architecture of this system, there is the transmitting and receiving ability of light and microwave, also can better realize with the existing satellite based on microwave technology networking and communicating to a certain extent, therefore this system has good autgmentability and backwards compatibility.
Accompanying drawing explanation
Fig. 1 be the utility model Technology for Spatial Information System network different layers between mesh information figure;
Fig. 2 is the structural representation of the hybrid transmission system of the utility model Technology for Spatial Information System network;
Fig. 3 be star in the hybrid transmission system of Technology for Spatial Information System network launch light emission module figure in subsystem.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in detail.Following examples will contribute to those skilled in the art and understand the utility model further, but not limit the utility model in any form.It should be pointed out that to those skilled in the art, without departing from the concept of the premise utility, some distortion and improvement can also be made.These all belong to protection range of the present utility model.
As shown in Figure 1, the system described by the present embodiment, its networking and prevailing transmission pattern are: the satellite be in different track aspect has difference in functionality, and network adopts the multilayer satellite network tactic pattern of differentiated control.In order to improve the stability also further closing to reality application scenarios of satellite network, this project adopts the network architecture of multilayer, differentiated control in its network system, regards each satellite of network consisting as a node simultaneously.Wherein, GEO/MEO constellation is top layer management, has the abilities such as routing table update, fault recovery and congestion control, and the backbone network in MEO and GEO Special composition information network.LEO is as underlying services transmission network.As shown in Figure 1, LEO satellite constellation is divided into multiple groups, and often group is connected to MEO/GEO by inter-satellite link, namely forms one-to-one relationship.Meanwhile, the satellite in MEO rail layer is also divided into some groups, and often group satellite and GEO also form corresponding relation.In order to reduce the computation complexity problem that network brings because of routing algorithm, improve network to the bearing capacity of miscellaneous service simultaneously, this project formulation justice: the information that ground sends is after LEO, and LEO sends route requests application by inter satellite link to the top layer management satellite GEO/MEO belonging to it.The management satellite of top layer is then according to after existing network system situation, corresponding route assignment is resolved, bottom-layer network can be passed to by corresponding inter satellite link, bottom-layer network then sets up source-target satellite light path according to corresponding routing policy in LEO constellation, and adopts the wavelength that distributes or wavelet is long realizes communicating between different node.
As shown in Figure 2, the utility model comprises ground R-T unit and satellite R-T unit.Ground R-T unit is set up by space link and satellite R-T unit and is contacted and communicate.Wherein, ground R-T unit comprise ground glazing and microwave signal emission system, glazing and microwave signal receiving system, on the ground pointing subsystem, on the ground the pointing subsystem emission system that controls ground glazing and microwave signal respectively by microwave decision signal and light transmitting antenna pose adjustment signal respectively with glazing and microwave signal receiving system; Satellite R-T unit comprises the reception of satellite glazing and microwave signal and exchanges pointing subsystem on repeater system, satellite glazing and microwave signal emission system, satellite, on satellite pointing subsystem respectively with the reception of satellite glazing and microwave signal and exchange repeater system, satellite glazing is connected with microwave signal emission system, for controlling reception and the transmitting of signal on satellite.
Ground glazing and microwave signal emission system comprise the signal generation unit of light and microwave, the first image intensifer, the first microwave amplifier, light transmitting antenna, the first microwave transmitting antenna, optical fiber, microwave coaxial cable line and microwave signal control unit; The signal generation unit of light and microwave comprises lightwave signal source, microwave signal source; Concrete: lightwave signal source is by Fiber connection to the first image intensifer, and the output of the first image intensifer to light transmitting antenna, thus realizes the transmitting of light signal through Fiber connection; Microwave signal source is connected to the first microwave amplifier by microwave coaxial cable line, and the output of the first microwave amplifier is connected to the first microwave transmitting antenna by microwave coaxial cable line, thus realizes the transmitting of microwave signal; Wherein microwave signal control unit, by extracting the control command on satellite R-T unit in signal, thus realizes the switching of microwave or optical signal launch;
The solution that ground glazing and microwave signal receiving system comprise the first microwave signal is in harmonious proportion processing unit, the first microwave antenna, the first fiber coupling module, the second image intensifer and the first photoelectric detector; Concrete: the signal on the ground in pointing subsystem arrives the first fiber coupling module, and the output of the first fiber coupling module, by Fiber connection to the second image intensifer, is connected to the first photodetector through the second image intensifer, thus realizes the reception of light signal; Signal on the ground in pointing subsystem is connected to the first microwave antenna, and the signal that the first microwave antenna receives is connected to the solution mediation processing unit of the first microwave signal by microwave cable coaxial line, thus completes the demodulation of microwave signal;
Preferably, lightwave signal source comprises the generation module of lightwave signal and the modulation module of lightwave signal; In the generation module of lightwave signal, the generation of lightwave signal is the mode of building based on mode or the spatial light device of fiber laser; The modulation module of lightwave signal comprises frequency microwave signal source, optical modulator and lightwave source; The output of lightwave source is connected to the optical modulator driven by frequency microwave signal source, and then completes the transmitting of lightwave signal.
Preferably, the optical modulator in the modulation module of lightwave signal comprises Mach zehnder modulators or electroluminescent Absorption modulation device;
Preferably, the photodetector in the receiving system of light and microwave signal is PIN or APD;
Preferably, the solution mediation processing unit of the first microwave signal comprises the lower conversion of microwave signal and the Base-Band Processing of signal;
The reception of satellite glazing and microwave signal and forward the receiving system that switching system comprises microwave signal on the receiving system of satellite optical signal, satellite; Wherein: the receiving system of satellite optical signal comprises light receiver aerial, the second fiber coupling module, the 3rd image intensifer and the second photodetector; The light signal of reception is coupled in optical fiber by the second fiber coupling module by light receiver aerial, signal after coupling reaches the second photodetector by the 3rd image intensifer, thus realizing the opto-electronic conversion of signal, the second photodetector output is connected to light and microwave signal exchanges forward process system; Light and microwave signal exchange forward process system and comprise the processing unit of microwave signal, base band exchange matrix, the modulating unit of light signal, the switching matrix of area of light signal, the reconstruct of data-signal and transmitter module; The processing unit of microwave signal exports a road and is connected to base band exchange matrix, and the electrical domain realizing signal exchanges; On satellite the receiving system of microwave signal comprise the reception antenna of the second microwave, microwave cable coaxial line, the second microwave signal solution be in harmonious proportion processing unit; On satellite, pointing subsystem output signal arrives to the second microwave antenna, and the signal that the second microwave antenna receives is connected to the solution mediation processing unit of the second microwave signal by microwave cable coaxial line, thus completes the demodulation of microwave signal; The signal that microwave signal process unit exports another road signal and base band exchange Output matrix enters into the modulating unit of light signal, the exchange of signal in the forwarding of settling signal and area of light in the modulating unit of light signal; Arrive reconstruct and the transmitter module of data-signal after exporting after the switching matrix of area of light signal, thus complete the exchange of light signal, forward and launch;
Preferably, the 3rd photodetector in optical signal reception system is PIN or APD;
Preferably, light and microwave signal exchange the modulating unit of the light signal in forward process system is Mach zehnder modulators or electroluminescent Absorption modulation device;
Preferably, the switching matrix of area of light signal that light and microwave signal exchange in forward process system is the optical add/drop multiplexer that forms based on passive device or the OADM device based on active device;
Preferably, on satellite microwave signal receiving system in the second microwave signal solution be in harmonious proportion processing unit comprise the lower conversion of microwave signal and the Base-Band Processing of signal;
Satellite glazing and microwave signal emission system comprise base band sources, light/microwave signal modulation module, signal amplifier and light/microwave transmitting antenna; Wherein: base band sources drives the modulation of light/microwave signal modulation module settling signal; The signal entering signal amplifier modulated realizes the amplification of signal; Signal after amplification is launched by light/microwave transmitting antenna, thus completes the transmitting of light and microwave signal;
Preferably, in satellite glazing and microwave signal emission system, base band sources comprises the generation module of lightwave signal and the modulation module of lightwave signal; In the generation module of lightwave signal, the generation of lightwave signal is the mode of building based on mode or the spatial light device of fiber laser; The modulation module of lightwave signal comprises frequency microwave signal source, optical modulator and lightwave source; The output of lightwave source is connected to the optical modulator driven by frequency microwave signal source, and then completes the transmitting of lightwave signal.
Preferably, in satellite glazing and microwave signal emission system, light/microwave signal modulation module is Mach zehnder modulators or electroluminescent Absorption modulation device;
Preferably, the signal amplifier in satellite glazing and microwave signal emission system is image intensifer or microwave amplifier, and wherein image intensifer is erbium-doped fiber amplifier, semiconductor optical amplifier or raman amplifier; When signal amplifier is microwave amplifier, it is the microwave amplifier of high power, low noise;
Further, the reconstruct of data-signal and the structure of transmitter module are as shown in Figure 3, form primarily of lower line light source CW, external modulator and data-signal generation module, wherein: lower line light source CW is the laser of common high power, low live width, the fiber laser of high stability or the spatial light for space device formation, data-signal generation module is for driving external modulator, make external modulator be operated in the linear zone of its transmission curve by bias voltage, and then realize the transmitting of multi-carrier modulation data of down going wave device group.Wherein, external modulator is Mach zehnder modulators or electroluminescent Absorption modulation device etc.
The present embodiment adopts the multi-carrier modulation technology based on ripple device group in the downlink transmission system of EPON, has following advantage:
1) system configuration of this space-oriented grid, adopt based on light and Microwave Hybrid transmission technology, the advantage of Yang Qiguang and Microwave transmission technology can be made full use of, keep away the shortcoming of these two kinds of technology, while, continuous data transmission round-the-clock in its Information Network of guarantee communicates, increase the transmission rate of system, improve power system capacity;
2), in the transceiver architecture of this system, there is the transmitting and receiving ability of light and microwave, also can better realize with the existing satellite based on microwave technology networking and communicating to a certain extent, therefore this system has good autgmentability and backwards compatibility.
3) in this system, between star and star, adopt optical transport technology, and exchange on star and repeater system are the modes adopting light and Microwave Hybrid, add the flexibility of its system transfers.
Above specific embodiment of the utility model is described.It is to be appreciated that the utility model is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present utility model.
Claims (9)
1. the light of Technology for Spatial Information System network and a Microwave Hybrid transmission system, is characterized in that comprising ground R-T unit and satellite R-T unit; Ground R-T unit is set up by space link and satellite R-T unit and is contacted and communicate; Wherein, ground R-T unit comprise ground glazing and microwave signal emission system, glazing and microwave signal receiving system, on the ground pointing subsystem, on the ground the pointing subsystem emission system that controls ground glazing and microwave signal respectively by microwave decision signal and light transmitting antenna pose adjustment signal respectively with glazing and microwave signal receiving system; Satellite R-T unit comprises the reception of satellite glazing and microwave signal and exchanges pointing subsystem on repeater system, satellite glazing and microwave signal emission system, satellite, on satellite pointing subsystem respectively with the reception of satellite glazing and microwave signal and exchange repeater system, satellite glazing is connected with microwave signal emission system, for controlling reception and the transmitting of signal on satellite.
2. the light of a kind of Technology for Spatial Information System network as claimed in claim 1 and Microwave Hybrid transmission system, is characterized in that ground glazing and microwave signal emission system comprise the signal generation unit of light and microwave, the first image intensifer, the first microwave amplifier, light transmitting antenna, the first microwave transmitting antenna, optical fiber, microwave coaxial cable line and microwave signal control unit; The signal generation unit of light and microwave comprises lightwave signal source, microwave signal source; Concrete: lightwave signal source is by Fiber connection to the first image intensifer, and the output of the first image intensifer to light transmitting antenna, thus realizes the transmitting of light signal through Fiber connection; Microwave signal source is connected to the first microwave amplifier by microwave coaxial cable line, and the output of the first microwave amplifier is connected to the first microwave transmitting antenna by microwave coaxial cable line, thus realizes the transmitting of microwave signal; Wherein microwave signal control unit, by extracting the control command on satellite R-T unit in signal, thus realizes the switching of microwave or optical signal launch.
3. the light of a kind of Technology for Spatial Information System network as claimed in claim 1 and Microwave Hybrid transmission system, is characterized in that solution that ground glazing and microwave signal receiving system comprise the first microwave signal is in harmonious proportion processing unit, the first microwave antenna, the first fiber coupling module, the second image intensifer and the first photoelectric detector; Concrete: the signal on the ground in pointing subsystem arrives the first fiber coupling module, and the output of the first fiber coupling module, by Fiber connection to the second image intensifer, is connected to the first photodetector through the second image intensifer, thus realizes the reception of light signal; Signal on the ground in pointing subsystem is connected to the first microwave antenna, and the signal that the first microwave antenna receives is connected to the solution mediation processing unit of the first microwave signal by microwave cable coaxial line, thus completes the demodulation of microwave signal.
4. the light of a kind of Technology for Spatial Information System network as claimed in claim 2 and Microwave Hybrid transmission system, is characterized in that lightwave signal source comprises the generation module of lightwave signal and the modulation module of lightwave signal; In the generation module of lightwave signal, the generation of lightwave signal is the mode of building based on mode or the spatial light device of fiber laser; The modulation module of lightwave signal comprises frequency microwave signal source, optical modulator and lightwave source; The output of lightwave source is connected to the optical modulator driven by frequency microwave signal source, and then completes the transmitting of lightwave signal.
5. the light of a kind of Technology for Spatial Information System network as claimed in claim 4 and Microwave Hybrid transmission system, is characterized in that the optical modulator in the modulation module of lightwave signal comprises Mach zehnder modulators or electroluminescent Absorption modulation device.
6. the light of a kind of Technology for Spatial Information System network as claimed in claim 1 and Microwave Hybrid transmission system, is characterized in that the reception of satellite glazing and microwave signal and forwards the receiving system that switching system comprises microwave signal on the receiving system of satellite optical signal, satellite; Wherein: the receiving system of satellite optical signal comprises light receiver aerial, the second fiber coupling module, the 3rd image intensifer and the second photodetector; The light signal of reception is coupled in optical fiber by the second fiber coupling module by light receiver aerial, signal after coupling reaches the second photodetector by the 3rd image intensifer, thus realizing the opto-electronic conversion of signal, the second photodetector output is connected to light and microwave signal exchanges forward process system; Light and microwave signal exchange forward process system and comprise the processing unit of microwave signal, base band exchange matrix, the modulating unit of light signal, the switching matrix of area of light signal, the reconstruct of data-signal and transmitter module; The processing unit of microwave signal exports a road and is connected to base band exchange matrix, and the electrical domain realizing signal exchanges; On satellite the receiving system of microwave signal comprise the reception antenna of the second microwave, microwave cable coaxial line, the second microwave signal solution be in harmonious proportion processing unit; On satellite, pointing subsystem output signal arrives to the second microwave antenna, and the signal that the second microwave antenna receives is connected to the solution mediation processing unit of the second microwave signal by microwave cable coaxial line, thus completes the demodulation of microwave signal; The signal that microwave signal process unit exports another road signal and base band exchange Output matrix enters into the modulating unit of light signal, the exchange of signal in the forwarding of settling signal and area of light in the modulating unit of light signal; Arrive reconstruct and the transmitter module of data-signal after exporting after the switching matrix of area of light signal, thus complete the exchange of light signal, forward and launch.
7. the light of a kind of Technology for Spatial Information System network as claimed in claim 1 and Microwave Hybrid transmission system, is characterized in that satellite glazing and microwave signal emission system comprise base band sources, light/microwave signal modulation module, signal amplifier and light/microwave transmitting antenna; Wherein: base band sources drives the modulation of light/microwave signal modulation module settling signal; The signal entering signal amplifier modulated realizes the amplification of signal; Signal after amplification is launched by light/microwave transmitting antenna, thus completes the transmitting of light and microwave signal.
8. the light of a kind of Technology for Spatial Information System network as described in claim 2,3,4,5,6 or 7 and Microwave Hybrid transmission system, is characterized in that the photodetector in the receiving system of light and microwave signal is PIN or APD; 3rd photodetector in optical signal reception system is PIN or APD; The solution mediation processing unit of the first microwave signal comprises the lower conversion of microwave signal and the Base-Band Processing of signal; The modulating unit that light and microwave signal exchange the light signal in forward process system is Mach zehnder modulators or electroluminescent Absorption modulation device; The switching matrix of the area of light signal that light and microwave signal exchange in forward process system is the optical add/drop multiplexer that forms based on passive device or the OADM device based on active device; On satellite microwave signal receiving system in the second microwave signal solution be in harmonious proportion processing unit comprise the lower conversion of microwave signal and the Base-Band Processing of signal.
9. the light of a kind of Technology for Spatial Information System network as claimed in claim 7 and Microwave Hybrid transmission system, is characterized in that, in satellite glazing and microwave signal emission system, base band sources comprises the generation module of lightwave signal and the modulation module of lightwave signal; In the generation module of lightwave signal, the generation of lightwave signal is the mode of building based on mode or the spatial light device of fiber laser; The modulation module of lightwave signal comprises frequency microwave signal source, optical modulator and lightwave source; The output of lightwave source is connected to the optical modulator driven by frequency microwave signal source, and then completes the transmitting of lightwave signal.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104967475A (en) * | 2015-06-11 | 2015-10-07 | 杭州电子科技大学 | Light and microwave mixing transmission system for spatial information network |
| CN107509125A (en) * | 2017-07-13 | 2017-12-22 | 西安空间无线电技术研究所 | A kind of distributed photoelectricity hybrid switching structure |
| CN110365401A (en) * | 2019-08-14 | 2019-10-22 | 上海卫星工程研究所 | Telecommunication satellite retransmission unit and its retransmission method based on Microwave photonics |
| CN111431582A (en) * | 2020-03-30 | 2020-07-17 | 中国人民解放军军事科学院国防科技创新研究院 | Beidou short message communication system based on low earth orbit satellite and communication method thereof |
| CN111615799A (en) * | 2018-01-19 | 2020-09-01 | 华为技术有限公司 | System and method for optical distribution of microwave frequency electrical signals for distributed microwave MIMO communications |
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2015
- 2015-06-11 CN CN201520404061.4U patent/CN204721356U/en not_active Expired - Fee Related
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| CN104967475A (en) * | 2015-06-11 | 2015-10-07 | 杭州电子科技大学 | Light and microwave mixing transmission system for spatial information network |
| CN104967475B (en) * | 2015-06-11 | 2019-02-12 | 杭州电子科技大学 | The light and Microwave Hybrid Transmission system of Technology for Spatial Information System network |
| CN107509125A (en) * | 2017-07-13 | 2017-12-22 | 西安空间无线电技术研究所 | A kind of distributed photoelectricity hybrid switching structure |
| CN107509125B (en) * | 2017-07-13 | 2020-06-09 | 西安空间无线电技术研究所 | Distributed photoelectric hybrid switching structure |
| CN111615799A (en) * | 2018-01-19 | 2020-09-01 | 华为技术有限公司 | System and method for optical distribution of microwave frequency electrical signals for distributed microwave MIMO communications |
| CN111615799B (en) * | 2018-01-19 | 2021-10-15 | 华为技术有限公司 | System and method for optical distribution of microwave frequency electrical signals for distributed microwave MIMO communications |
| CN110365401A (en) * | 2019-08-14 | 2019-10-22 | 上海卫星工程研究所 | Telecommunication satellite retransmission unit and its retransmission method based on Microwave photonics |
| CN111431582A (en) * | 2020-03-30 | 2020-07-17 | 中国人民解放军军事科学院国防科技创新研究院 | Beidou short message communication system based on low earth orbit satellite and communication method thereof |
| CN111431582B (en) * | 2020-03-30 | 2021-01-26 | 中国人民解放军军事科学院国防科技创新研究院 | Beidou short message communication system based on low earth orbit satellite and communication method thereof |
| CN114301531A (en) * | 2021-12-24 | 2022-04-08 | 华中科技大学 | Microwave and light wave communication system sharing antenna aperture |
| CN114301531B (en) * | 2021-12-24 | 2023-06-13 | 华中科技大学 | Microwave and light wave communication system with shared antenna aperture |
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