The content of the invention
In order to solve the problems in the existing technology, the present invention provides a kind of New Satellite high speed data transfer systemSystem, using phased array antenna and polarization multiplexing United Technologies, the angle information of real-time resolving data terminal transmission, realizes satellite pairGround four-way high speed data transfer.
The technical proposal for solving the technical problem of the invention is as follows：
Two sets of identical antenna sets, often cover the two secondary phased arrays that antenna sets include laying using left and right hand circular polarization modeAntenna；
The phased array antenna includes antenna array, emitting module, feeding network, Beamsteering Unit and power supply unit；The antenna array includes N number of bay, and the quantity of the emitting module is identical with the quantity of the bay, the hairComponent is penetrated to connect one to one with bay；
Wherein, the Beamsteering Unit receives the control signal of host computer transmitting, and after being parsed to control signalEmitting module is transmitted to, the emitting module is by control signal transmission to bay；
Wherein, the feeding network receives the radiofrequency signal that data transmission terminal produces, and is passed through after radiofrequency signal is divided into N roadsEmitting module is transmitted to bay, and radiofrequency signal is launched through bay.
Preferably, a set of in two sets of antenna sets is emergency antenna.
Preferably, externally fed is converted into the secondary power supply needed for inner antenna by the power supply unit.
Preferably, the N is 4,8,16,32,64,128 or 256.
Preferably, the N is 16.
Preferably, the antenna array is laid with triangular lattice array, and the bay uses medium loudspeakerForm.
Preferably, the operating mode of data transmission system includes number arq mode, playback mode in real time and number is passed back in real timeMode playback.
The beneficial effects of the invention are as follows：1st, four-way left-right-hand circular polarization technology is defended with what electricity swept that phased array antenna is combinedSing data transmission mode, transmission any combination or backup, single channel data transmission rate are not less than 600Mbps, support current imaging numberNumber passes operating mode when factually；2nd, polarization multiplexing technology and shaping filter technology are made full use of, is designed using left-right-hand circular polarizationMethod, reaches the using effect of the multiplication of satellite data transmission bit rate, realizes the message transmission rate of 1.2Gbps；3rd, shaping is utilizedFiltering technique, polarization multiplexing technology and phased array antenna design method, relieve conventional satellite data transmission subsystem number and pass port numberLinear restriction relation on amount, frequency point quantity and star between antenna amount, high speed, reliable, real-time Data Transmission provide for starTechnical support and powerful guarantee.4th, using phased array antenna orientation angle amplitude of variation it is big the characteristics of, realize the real-time of satelliteNumber passes function, i.e. imaging can be carried out at the same time with number biography, combine on star task more flexible, ground resource use is more abundant；5th, fourPort number passes the design architecture of binary channels backup, ensure that number passes the reliability of link, meanwhile, remained for subsequent expansion frequency pointInterface, design are more flexible.
Embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
The present invention proposes a kind of New Satellite high speed data transmission system, utilizes polarization multiplexing technology and shaping filter skillArt, using left-right-hand circular polarization design method, angle information that real-time resolving data transmission terminal is brought, and control each passagePhase shift so that wave beam is directed toward earth station all the time, realizes that payload data is transmitted, it can be achieved that four-way (two passages over the ground in real timeBackup) 1.2Gbps data pass down in real time.
Fig. 1 shows the concrete structure of New Satellite high speed data transmission system, including：
Two sets of identical antenna sets of frequency, often cover antenna sets include laying using left and right hand circular polarization mode twoSecondary phased array antenna, fourth officer phased array antenna are the f1 dextrorotation antenna and left-handed antennas of f1, the f2 dextrorotation antenna and left-handed days of f2Line；The phased array antenna includes antenna array, emitting module, feeding network, Beamsteering Unit and power supply unit；
The antenna array includes N number of bay, and wherein N is positive integer, and bay uses medium loudspeaker form, toolHigh efficiency, with roomy, good environmental adaptability (can adapt to -100 DEG C~+120 DEG C scopes), easily batch production, and unanimouslyThe characteristics of property is good.For planar array, element antenna, which is laid out, is most commonly used that rectangular grid and triangular lattice, and these grid clothOffice can realize rectangle battle array, hexagon and circular array etc..
The quantity of the emitting module is identical with the quantity of the bay, and the emitting module and bay are one by oneIt is correspondingly arranged, emitting module mainly completes branch, amplification and the phase shift of radiofrequency signal, possesses the function of the independent break-make of each passage；In addition each component has two-way remote temperature sensing；Each component is individually powered, independent data-interface, and each component can be independentDismounting, replace.
Feeding network plays the role of centimetre, i.e., a signal is divided into several signals, and energy is divided into several parts,It receives the radiofrequency signal that data transmission terminal produces, and radiofrequency signal is divided into behind N roads and is transmitted to bay through emitting module, penetratesFrequency signal is launched through bay；
As shown in figure 3, the Beamsteering Unit receives the control signal of host computer transmitting, and control signal is solvedEmitting module is transmitted to after analysis, the emitting module is by control signal transmission to bay.Its concrete function is：1st, according to dayLine beam position angle information, shifting in each emitting module is drawn by the way that the phase of each antenna element is calculated, and using tabling look-upThe control data of phase device, complete the control to phase shifter.The 2nd, required power supply is provided for each circuit in Beamsteering Unit.3rd, by gathering the working status of Beamsteering Unit and the collection of antenna condition information, determine whether just number passes phased array antennaOften.
In another embodiment, a set of in two sets of antenna sets is emergency antenna, and f2 dextrorotation antennas are selected in the present embodimentIt is emergency antenna with the left-handed antennas of f2, four-way number passes the design architecture of binary channels backup, ensure that number passes the reliability of link,Meanwhile interface is remained for subsequent expansion frequency point, design is more flexible.
In another embodiment, as shown in figure 4, power module is mainly made of DC-DC devices, and it is equipped with peripheral filter electricityEased up circuit for road, protection circuit, and+30V power supplies in outside are converted into the secondary electricity needed for interiors of products and component by power moduleSource.
In another embodiment, the antenna array includes 4,8,16,32,64,128 or 256 bays, according to numberSelect 4,8,16,32,64,128 or 256 bays according to transmission and different gain requirements, array element increase can improve it is phasedThe gain of array antenna.
In another embodiment, as shown in Fig. 2, the antenna array includes 16 bays, triangular lattice is selectedArray is laid out.
In another embodiment, including in real time number arq mode, playback mode and real-time number pass mode playback back.
A arq mode) is counted in real time
As shown in figure 5, when satellite is by near a certain earth station, can reach phased array antenna communication beams canWhen within the scope of adjusting, it can adjust wave beam and earth station passed into line number, while the other region interested of camera start alignmentShot, the content captured by camera can be directly over the left-handed phased array antenna and dextrorotation phased array of Data transfer system at this timeAntenna descends into the earth station in beam area, and earth station receives left-handed and dextrorotation data at the same time, and is pre-processed with being addedAfter work, the picture of protosatellite shooting can be quickly gone back, it is achieved thereby that number passes in real time.
Number arq mode directly carries out real-time Communication for Power after load data is received with earth station in real time, there is provided fast and accurately believesNumber, play a significant role on the satellites such as communication, navigation.Memory module is not required in Data transfer system at the same time, simplifies system composition,Improve system reliability and cost-effective.
B number arq mode) is played back
As shown in fig. 6, it is to carry out storage rule after the data of load are received that playback mode number, which passes, it is equipped with and deposits on satelliteModule is stored up, Tbps data can be stored, carrying out left-handed and dextrorotation binary channels number to earth station when passing by passes, and ground connects at the same timeReceive the twin-channel number of left-right rotary and pass data, and after being pre-processed and being processed, image is parsed.It is mesh that playback formula number, which passes,The data down transmission mode that preceding remote sensing satellite mainly uses.
C) several arq modes are put in add-back in real time
As shown in fig. 7, add-back mode playback number passes the advantages of combining above two number arq mode in real time, can be in earth stationNumber in real time is carried out when nearby to pass, and can also store the regional image data farther out positioned at earth station, while some can also lead toRoad carries out number in real time and passes, other passages carry out storage number and pass, and combination is very flexible, so as to be carried out to the diversity of demandAdapt to.
When satellite is by near a certain earth station, the scope that phased array antenna communication beams can be adjusted can be reachedWithin when, can adjust wave beam and earth station passed into line number, while in addition camera start alignment region interested is shot, thisContent captured by Shi Xiangji can be directly over the left-handed phased array antenna of Data transfer system or dextrorotation phased array antenna descends intoEarth station in beam area, another passage can read the data of storage device on star, be passed into line number, earth station is at the same timeLeft-handed and dextrorotation data are received, and after being pre-processed and being processed, the picture of protosatellite shooting can be quickly gone back, so that realShow real-time add-back and put several biographies.
The advantage of the present invention：
The phased array number of the present invention, which passes, can reach 2*600Mbps, and can realize that number passes in real time, and number biography can be fast in real timeSpeed obtains image, so as to substantially reduce from the whole process for photographing out figure, in various natural calamities, commander speedily carries out rescue work, military affairs etc.A variety of aspects are of great significance.The present invention has higher direction flexibility, has multi-beam sending mode, has lowThe advantages that power consumption high-speed, substantially increase the efficiency of remote sensing satellite data receiver and production.
Real-time add-back mode playback number passes the flexibilities for improving number biography to greatest extent, with reference to current phased-array technique withAnd attitude control technology on star, it is possible to achieve passed to motor-driven station number, it is meant that when needing rescue or operational commanding future, it is only necessary toWant a motor-driven data receiving station, it is possible to which Real Time Observation ambient conditions are simultaneously at the same time to regional feelings interested when satellite passes byCondition is carried out at the same time reception observation, and makes correct judgement.Therefore the combination of two kinds of number arq modes is the development side of several biographies from now onTo and trend.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listedWith.It can be applied to various suitable the field of the invention completely., can be easily for those skilled in the artRealize other modification.Therefore it is of the invention and unlimited under the universal limited without departing substantially from claim and equivalency rangeIn specific details and shown here as the legend with description.