CN105186102B - Antenna for satellite communication in motion system and tracking based on digital beam tracking - Google Patents
Antenna for satellite communication in motion system and tracking based on digital beam tracking Download PDFInfo
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- CN105186102B CN105186102B CN201510585594.1A CN201510585594A CN105186102B CN 105186102 B CN105186102 B CN 105186102B CN 201510585594 A CN201510585594 A CN 201510585594A CN 105186102 B CN105186102 B CN 105186102B
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Abstract
The invention discloses a kind of antenna for satellite communication in motion system based on digital beam tracking, including digital beam track receiver, DVB and tracing control main controller, the input of digital beam track receiver is terminated with two paths of signals receiving processing circuit, include antenna, duplexer, low-noise amplifier, low-converter, wave filter and the A/D converter being sequentially connected per road signal receiving processing circuit, the input of DVB is terminated with Receiver Module, and the output of DVB is terminated with radiofrequency emitting module；The input of tracing control main controller is terminated with navigation module and inertia measuring module, and the output of tracing control main controller is terminated with elevation servo motor and bearing servo motor；The invention also discloses a kind of tracking of the antenna for satellite communication in motion system alignment target satellite based on digital beam tracking.The present invention is reasonable in design, realizes and use is easy to operate, tracking velocity is fast, and tracking accuracy is high, applied widely, application easy to spread.
Description
Technical field
The invention belongs to technical field of satellite communication, and in particular to a kind of antenna for satellite communication in motion system based on digital beam tracking
System and tracking.
Background technology
Satellite communications system (referred to as " communication in moving ") refers to satellite antenna being arranged on mobile vehicle platform (such as
Automobile, train, aircraft, steamer etc.), satellite antenna can establish stable communication chain with fixed statellite (i.e. geosynchronous satellite)
Road, and the stabilization of communication link can be kept during carrier quickly moves with unimpeded, to realize the system of real-time Communication for Power.
Because distance of the fixed statellite away from ground is far (about 36000 kilometers), link loss is big, thus to realize mobile vehicle platform with
Broadband connections between fixed statellite, it must just use the directional aerial of high-gain.The wave beam of the antenna of high-gain is very narrow simultaneously, must
It antenna beam must be made just can guarantee that with certain accurate alignment satellite all the time the stability of communication link.
SOTM satellite antenna following principle is to detect antenna beam sensing and satellite according to the satellite-signal received
Angular error between direction, tracking servo main controller points to according to error transfer factor antenna, so as to reach the purpose of tracking satellite.
In order to improve antenna gain, antenna for satellite communication in motion is generally made up of two antenna elements or more antennas unit.Two of which day
The antenna for satellite communication in motion small volume of line unit composition, it is in light weight, but antenna gain is low compared with four antenna elements.Four antenna element groups
Into antenna for satellite communication in motion gain will height, but volume and weight is big simultaneously.
In summary, the key of antenna for satellite communication in motion system is how under mobile vehicle platform motion state, makes antenna ripple
Beam is directed at telecommunication satellite all the time, and core technology is the stabilization and tracking technique of antenna beam.Wherein, the stabilization of antenna beam is based on
The stability of system clock, crystal oscillator or micromechanics (MEMS) technology, element generally there are temperature change, linear acceleration and other
Their biasing and proportionality coefficient is set to produce error when changing etc. factor.Therefore, the key problem in technology of a system tenacious tracking is
How with tracking information with correct antenna point to error.
The general principle of communication in moving tracking mode is to detect that antenna beam is pointed to defending according to the satellite-signal received
Error angle between star direction, controller utilize the control errors antenna, antenna is moved to the direction that error signal reduces.It is aobvious
So, this is a kind of Closed loop track satellite mode.The tracking mode commonly used currently used for satellite communication has step trakcing, conical scanning
The mode such as tracking and single-pulse track.Wherein, conical scanning tracking and step trakcing are all built upon the base of an antenna beam
On plinth, scanned using simple beam around satellite direction, utilize the fringe enclosing direction of amplitude.Realize simple in construction, cost
It is low, but tracking accuracy is low simultaneously, and decline system gain because cone-beam scan tracing deviates satellite direction, and
Asymmetric problem be present for non-conical wave beam.Hill climb system antenna beam can not rest on the direction to satelloid
On, but constantly swung around the direction, because antenna is that alternate rotation is repeated on pitching face and azimuth plane to realize
Antenna beam is progressively slower to satelloid, tracking convergence rate；In addition, step trakcing is using received signal level as according to judgement
Whether antenna is to satelloid, and when received signal level amplitude of variation is larger, there will be relatively large deviation for antenna tracking.And pulse
Autotracking can realize high precision tracking and tracking velocity is quickly, but system equipment is complicated, has exceeded system to volume, weight
With the requirement of cost limitation.
When telecommunication satellite does not have beacon, and the communication mode of use burst type.Now carried out using traditional several ways
All because being used for the correction of angular error without continuous received signal power, effect can be all decreased obviously for tracking.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of structure letter
It is single, reasonable in design, realize and using it is easy to operate, tracking velocity is fast, tracking accuracy is high, applied widely based on digital beam
The antenna for satellite communication in motion system of tracking.
In order to solve the above technical problems, the technical solution adopted by the present invention is：In a kind of dynamic based on digital beam tracking
Logical antenna system, it is characterised in that：Including digital beam track receiver, DVB and with digital beam track receiver
The tracing control main controller to connect, the input of the digital beam track receiver are terminated with two paths of signals receiving processing circuit,
The antenna that includes being sequentially connected per signal receiving processing circuit described in road, duplexer, low-noise amplifier, low-converter, filter
Ripple device and A/D converter, the antenna are arranged on antenna base, and the input of the DVB is terminated with radio frequency receiving
Block, the output of the DVB are terminated with radiofrequency emitting module, and the output end of the duplexer and radiofrequency emitting module connects
Connect, the output end connection of the Receiver Module and low-noise amplifier；The input of the tracing control main controller is terminated with
Navigation module and inertia measuring module, the output of the tracing control main controller are terminated with for driving bowing for antenna tracking satellite
Face upward servomotor and bearing servo motor.
The above-mentioned antenna for satellite communication in motion system based on digital beam tracking, it is characterised in that：The digital beam tracking connects
Receipts machine is included for connecting the communication interface of tracing control main controller, two-way is respectively used to signal reception processing electricity described in two-way
Road output signal carry out digital processing digital signal processor and for by described in two-way digital signal processor export
Signal synthesizes the digital bea mforming device of three digital beams, three digital beams be respectively and wave beam, left wave beam and
Right wave beam, digital signal processor is by the digital down converter, matched filter and phase shifter group to connect successively described in per road
Into the digital bea mforming device is made up of three adders, two inputs of first adder in three adders
Respectively with the output end of first phase shifter in two phase shifters and two matched filters second matched filter it is defeated
Go out end connection, the output end of two inputs of second adder in three adders respectively with two matched filters connects
Connect, two inputs of the 3rd in three adders adder respectively with first matched filtering in two matched filters
The output end of device connects with the output end of second phase shifter in two phase shifters, and the output end of three adders is respectively connected to one
Power detector, the output end of three power detectors are connected with communication interface.
The above-mentioned antenna for satellite communication in motion system based on digital beam tracking, it is characterised in that：The antenna is single day
Line or the array antenna being made up of multiple antennas.
The above-mentioned antenna for satellite communication in motion system based on digital beam tracking, it is characterised in that：The antenna is circular polarisation day
Line, linear polarized antenna or oval circular polarized antenna.
Present invention also offers a kind of method and step is simple, realization is convenient, tracking velocity is fast, tracking accuracy is high, is applicable model
Enclose the tracking of the wide antenna for satellite communication in motion system alignment target satellite based on digital beam tracking, it is characterised in that this method
Comprise the following steps：
Step 1: system initialization：The tracing control main controller control elevation servo motor rotation, drives antenna movement
To default luffing angle；
Step 2: azimuth direction tracks：The tracing control main controller control azimuth servomotor rotation, drives antenna to exist
Rotary scanning on azimuth direction, DVB output signal by radiofrequency emitting module be amplified with after Gain tuning,
Launch again after duplexer receive and isolated with transmission signal through antenna；The signal that antenna receives passes through duplexer
Export after reception is isolated with transmission signal to low-noise amplifier, the signal of low-noise amplifier amplification duplexer output,
On the one hand export and be amplified and exported again after Gain tuning to DVB to Receiver Module, on the other hand export to
Low-converter, after the signal that low-converter is received down-converts to intermediate-freuqncy signal, intermediate-freuqncy signal device after filtering successively again
Processing is filtered, by A/D converter export after A/D conversions become data signal and gives digital beam track receiver,
Digital beam track receiver is digitized processing, synthesis and wave beam, left wave beam and right ripple to the two paths of signals that it is received
Three digital beams of beam, obtain the power P with wave beama, left wave beam power PbWith the power P of right wave beamc, and according to formulaThe angle delta θ that satellite direction is deviated to the right with wave beam is calculated, then generation adjustment
The control signal that antenna points to the deviation between satellite gives tracing control main controller, tracing control main controller control azimuth servo electricity
Machine rotates, and drives antenna tracking satellite；Wherein, φ is left wave beam and the deflection angle between wave beam；
Step 3: inertial navigation tracks：The location position of antenna tracking satellite in step 2 is inertial navigation by tracing control main controller
Dead-center position, receive the attitude signal of the antenna base that inertia measuring module detects, generation control elevation servo electricity
The signal of the rotational angle and speed of machine and bearing servo motor simultaneously controls elevation servo motor and bearing servo motor to rotate, and bows
Face upward servomotor and bearing servo motor driven antenna tracking satellite；Meanwhile tracing control main controller receives navigation module generation
The antenna base detected to inertia measuring module the calibration signal calibrated of attitude signal, calibrate inertia measurement
Module.
Above-mentioned method, it is characterised in that：The two paths of signals that digital beam track receiver receives to it in step 2
Processing, synthesis and three wave beam, left wave beam and right wave beam digital beams are digitized, obtain the power P with wave beama, Zuo Bo
The power P of beambWith the power P of right wave beamcDetailed process be：
In digital signal processor described in step 201, two-way, digital down converter is by the digital intermediate frequency signal of bandpass sampling
It is down-converted on the signal of more Low Medium Frequency, the signal after down coversion retains the working signal of communication system by matched filter,
Enter phase shifter after removing out-of-band interference signal, phase shifter exports after carrying out phase shift to signal；
First adder in step 202, three adders by first phase shifter in two phase shifters to shifting to
The signal of second matched filter output is overlapped in signal and two matched filters after processing, obtains left wave beam simultaneously
Export to first power detector in three power detectors；Second adder in three adders matches to two
The signal of wave filter output is overlapped, and is obtained and wave beam and is exported to second power detection in three power detectors
Device；The 3rd adder in three adders to the signal after second phase shifter in two phase shifters shifts to processing and
The signal of first matched filter output is overlapped in two matched filters, is obtained right wave beam and is exported to three power
The 3rd power detector in detector；
The left wave beam that first power detector in step 203, three power detectors receives to it carries out power
Detection, obtains the power P of left wave beamb；Second power detector in three power detectors receives to it and wave beam
Power detection is carried out, obtains the power P with wave beama；The 3rd power detector in three power detectors receives to it
Right wave beam carry out power detection, obtain the power P of right wave beamc。
The present invention has advantages below compared with prior art：
1st, the structure of antenna for satellite communication in motion system of the present invention is simple, reasonable in design, realizes and using easy to operate.
2nd, antenna for satellite communication in motion system of the present invention employs modular design, and flexibility is high, is easy to extend and updates upgrading,
It is easy to development and production tandem product.
3rd, the speed of digital beam track receiver process signal of the present invention is fast, and intelligence degree is high.
4th, the tracking step of antenna for satellite communication in motion system alignment target satellite of the present invention is simple, and it is convenient to realize.
5th, the present invention have quick tracking satellite ability and higher tracking accuracy, make communication in moving system not by main website about
Beam all the time can tracking satellite, overcome the discontinuous problem of signal that satellite does not have beacon, burst oriented communication to bring, improve master
Stand and the survival ability of communication in moving earth station.
6th, the present invention can realize the tenacious tracking of antenna for satellite communication in motion system, and Satellite Tracking effect is good, applied widely, no
It is confined to whether satellite has the modulation system of beacon and signal, application easy to spread.
In summary, the present invention is reasonable in design, realizes and using easy to operate, and tracking velocity is fast, and tracking accuracy is high, is applicable
Scope is wide, application easy to spread.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the schematic block circuit diagram of antenna for satellite communication in motion system of the present invention.
Fig. 2 is the schematic block circuit diagram of digital beam track receiver of the present invention.
Fig. 3 is the receiving side signal formula schematic diagram of digital beam of the present invention tracking.
Fig. 4 is the signal reception state schematic diagram that the present invention and wave beam are directed at satellite direction.
Description of reference numerals:
1-antenna；2-duplexer；3-low-noise amplifier；
4-low-converter；5-radiofrequency emitting module；6-Receiver Module；
7-DVB；8-wave filter；9-A/D converter；
10-digital beam track receiver；10-1-digital down converter；10-2-matched filter；
10-3-phase shifter；10-4-digital bea mforming device；10-41-adder；
10-5-power detector；10-6-communication interface；11-tracing control main controller；
12-navigation module；13-inertia measuring module；14-elevation servo motor；
15-bearing servo motor；16-and wave beam；17-left wave beam；
18-right wave beam.
Embodiment
As shown in figure 1, the antenna for satellite communication in motion system based on digital beam tracking of the present invention, including digital beam tracking connect
Receipts machine 10, DVB 7 and the tracing control main controller 11 to connect with digital beam track receiver 10, the digital beam
The input of track receiver 10 is terminated with two paths of signals receiving processing circuit, include per signal receiving processing circuit described in road according to
Antenna 1, duplexer 2, low-noise amplifier 3, low-converter 4, wave filter 8 and the A/D converter 9 of secondary connection, the antenna 1 are pacified
On antenna base, the input of the DVB 7 is terminated with Receiver Module 6, the output of the DVB 7
Radiofrequency emitting module 5 is terminated with, the duplexer 2 is connected with the output end of radiofrequency emitting module 5, the Receiver Module 6
It is connected with the output end of low-noise amplifier 3；The input of the tracing control main controller 11 is terminated with navigation module 12 and inertia
Measurement module 13, the output of the tracing control main controller 11 are terminated with the elevation servo electricity for driving the tracking satellite of antenna 1
Machine 14 and bearing servo motor 15.
As shown in Fig. 2 in the present embodiment, the digital beam track receiver 10 includes being used to connect tracing control master control
Communication interface 10-6, the two-way of device 11 are respectively used to carry out digital place to the signal that signal receiving processing circuit described in two-way exports
The digital signal processor of reason and the signal for digital signal processor described in two-way to be exported synthesize three digital beams
Digital bea mforming device 10-4, three digital beams are respectively and wave beam 16, left wave beam 17 and right wave beam 18, often road institute
Digital signal processor is stated by digital down converter 10-1, the matched filter 10-2 and phase shifter 10-3 groups to connect successively
Into the digital bea mforming device 10-4 is made up of three adder 10-41, first addition in three adder 10-41
Device 10-41 two inputs match filter with the output end of first phase shifter 10-3 in two phase shifter 10-3 and two respectively
Second matched filter 10-2 output end connects in ripple device 10-2, second adder 10- in three adder 10-41
Output end of 41 two inputs respectively with two matched filter 10-2 is connected, the 3rd in three adder 10-41
Adder 10-41 two inputs output end with first matched filter 10-2 in two matched filter 10-2 respectively
Connected with the output end of second phase shifter 10-3 in two phase shifter 10-3, three adder 10-41 output end is respectively connected to
One power detector 10-5, three power detector 10-5 output end are connected with communication interface 10-6.When it is implemented,
The digital beam track receiver 10 is realized using FPGA module, DSP or ARM microcontroller.
In the present embodiment, the antenna 1 is single antenna or the array antenna being made up of multiple antennas.Specific implementation
When, the array antenna is two or more antenna elements in orientation or in pitching.
In the present embodiment, the antenna 1 is circular polarized antenna, linear polarized antenna or oval circular polarized antenna.
When it is implemented, the circular polarized antenna can also be synthesized by linear polarized antenna, the rotation direction of circular polarized antenna can be with
It is left-hand circular polarization, can also be right-handed circular polarization, is selected according to specific application environment.Moreover, when it is implemented, institute
Some functional units are all arranged on unified mounting structure, and in shell.Antenna 1 passes through coaxial cable and duplexer
2 connections.
The tracking of the antenna for satellite communication in motion system alignment target satellite based on digital beam tracking of the present invention, including with
Lower step：
Step 1: system initialization：The tracing control main controller 11 controls elevation servo motor 14 to rotate, and drives antenna
1 moves to default luffing angle；
Step 2: azimuth direction tracks：The control azimuth servomotor 15 of tracing control main controller 11 rotates, and drives day
The rotary scanning in the azimuth direction of line 1, the signal that DVB 7 exports is amplified by radiofrequency emitting module 5 and gain
After adjustment, then launch after duplexer 2 receive and isolated with transmission signal through antenna 1；The signal that antenna 1 receives
Exported after duplexer 2 receive and isolated with transmission signal and amplify duplex to low-noise amplifier 3, low-noise amplifier 3
The signal that device 2 exports, on the one hand exports and is amplified and is exported again after Gain tuning to DVB to Receiver Module 6
7, on the other hand export to low-converter 4, after the signal that low-converter 4 is received down-converts to intermediate-freuqncy signal, intermediate frequency letter
Number device 8 is filtered processing after filtering successively again, by A/D converter 9 exported after A/D conversions become data signal to
Digital beam track receiver 10, digital beam track receiver 10 are digitized processing to the two paths of signals that it is received,
Synthesis and 18 3 wave beam 16, left wave beam 17 and right wave beam digital beams, obtain the power P with wave beam 16a, left wave beam 17 work(
Rate PbWith the power P of right wave beam 18c, and according to formulaBe calculated with wave beam 16 to
From the angle delta θ of satellite direction, then generation adjustment antenna points to controls right avertence the control signal of deviation between satellite to tracking
Main controller 11 processed, the control azimuth servomotor 15 of tracing control main controller 11 rotate, and drive the tracking satellite of antenna 1；Wherein, φ is
Left wave beam 17 and the deflection angle between wave beam 16；
When it is implemented, the folder with orientation where wave beam 16,18 3 digital beams of left wave beam 17 and right wave beam and satellite
Angular dependence is：As shown in figure 3, being deviated to the right satellite direction Δ θ angle with wave beam 16, left wave beam 17 is located at and a left side for wave beam 16
Side, left wave beam 17 and the deflection angle between wave beam 16 are φ；Right wave beam 18 be located at and wave beam 16 right side, right wave beam 18 with and
Deflection angle between wave beam 16 is-φ；Deflection angle between left wave beam 17 and right wave beam 18 is 2 φ；With wave beam 16, left wave beam 17
Relativeness between right 18 3 digital beams of wave beam is fixed, so when deviateing satellite direction with wave beam 16, Zuo Bo
Beam 17 and right wave beam 18 also offset from identical angle.When being deviated to the right satellite direction Δ θ angle with wave beam 16, and wave beam
The position of 16 satellite-signals received is located at the A points of corresponding wave beam, and corresponding power is Pa；The satellite that left wave beam 17 receives
The position of signal is located at the B points of corresponding wave beam, and corresponding power is Pb；The position for the satellite-signal that right wave beam 18 receives is located at
The C points of corresponding wave beam, corresponding power is Pc.As shown in figure 4, when being directed at satellite direction with wave beam 16, Δ θ=0, and wave beam
The position of 16 satellite-signals received is located at the A points of corresponding wave beam, and the position for the satellite-signal that left wave beam 17 receives is located at
The B points of corresponding wave beam, the position for the satellite-signal that right wave beam 18 receives are located at the C points of corresponding wave beam, and B points and C points overlap, and
The power P of wave beam 16aReach maximum, Pb=Pc。
Step 3: inertial navigation tracks：The location position of the tracking satellite of antenna in step 21 is used by tracing control main controller 11
The dead-center position led, receives the attitude signal for the antenna base that inertia measuring module 13 detects, generation control pitching is watched
Take the rotational angle of motor 14 and bearing servo motor 15 and the signal of speed and control elevation servo motor 14 and bearing servo
Motor 15 rotates, and elevation servo motor 14 and bearing servo motor 15 drive the tracking satellite of antenna 1；Meanwhile tracing control master control
The attitude signal that device 11 receives the antenna base detected to inertia measuring module 13 that navigation module 12 generates carries out school
Accurate calibration signal, calibrate inertia measuring module 13.When it is implemented, while antenna for satellite communication in motion system is opened, inertia is surveyed
Amount module 13 begins to work, and the signal that simply tracing control main controller 11 exports to inertia measuring module 13 is not dealt with,
The ability start to process after completing step 2.In addition, when antenna for satellite communication in motion system does not have reception signal for a long time, communication in moving day
Linear system system enters small range sector scanning or restarting.
In the present embodiment, digital beam track receiver 10 is digitized to the two paths of signals that it is received in step 2
Processing, synthesis and 18 3 wave beam 16, left wave beam 17 and right wave beam digital beams, obtain the power P with wave beam 16a, left wave beam
17 power PbWith the power P of right wave beam 18cDetailed process be：
In digital signal processor described in step 201, two-way, digital down converter 10-1 is by the intermediate frequency digital of bandpass sampling
Signal is down-converted on the signal of more Low Medium Frequency, and the signal after down coversion retains the work of communication system by matched filter 10-2
Make signal, enter phase shifter 10-3 after removing out-of-band interference signal, phase shifter 10-3 is exported after carrying out phase shift to signal；
First adder 10-41 in step 202, three adder 10-41 is to by two phase shifter 10-3 the
One phase shifter 10-3 shifts to second matched filter 10-2 output in signal and two matched filter 10-2 after processing
Signal be overlapped, obtain left wave beam 17 and export to first power detector 10- in three power detector 10-5
5；Second adder 10-41 in three adder 10-41 is overlapped to two matched filter 10-2 signals exported,
Obtain and wave beam 16 and export to second power detector 10-5 in three power detector 10-5；Three adder 10-
The 3rd adder 10-41 in 41 is to the signal after second phase shifter 10-3 in two phase shifter 10-3 shifts to processing
It is overlapped with the signal of first matched filter 10-2 output in two matched filter 10-2, obtains right wave beam 18 and defeated
Go out to the 3rd power detector 10-5 in three power detector 10-5；
The left wave beam that first power detector 10-5 in step 203, three power detector 10-5 receives to it
17 carry out power detection, obtain the power P of left wave beam 17b；Second power detector 10- in three power detector 10-5
5 pairs its receive and wave beam 16 carry out power detection, obtain the power P with wave beam 16a；In three power detector 10-5
The right wave beam 18 that 3rd power detector 10-5 receives to it carries out power detection, obtains the power P of right wave beam 18c。
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (4)
- A kind of 1. antenna for satellite communication in motion system based on digital beam tracking, it is characterised in that：Including digital beam track receiver (10), DVB (7) and the tracing control main controller (11) to connect with digital beam track receiver (10), the numeral The input of wave beam track receiver (10) is terminated with two paths of signals receiving processing circuit, and signal receiving processing circuit described in per road is equal Antenna (1), duplexer (2), low-noise amplifier (3), low-converter (4), wave filter (8) and A/D including being sequentially connected turn Parallel operation (9), the antenna (1) are arranged on antenna base, and the input of the DVB (7) is terminated with Receiver Module (6), the output of the DVB (7) is terminated with radiofrequency emitting module (5), the duplexer (2) and radiofrequency emitting module (5) output end connection, the Receiver Module (6) are connected with the output end of low-noise amplifier (3)；The tracing control The input of main controller (11) is terminated with navigation module (12) and inertia measuring module (13), the tracing control main controller (11) Output is terminated with being used for the elevation servo motor (14) and bearing servo motor (15) for driving antenna (1) tracking satellite；The digital beam track receiver (10) include be used for connect tracing control main controller (11) communication interface (10-6), Two-way is respectively used to carry out the signal that signal receiving processing circuit described in two-way exports the digital signal processor of digital processing The digital bea mforming device of three digital beams is synthesized with the signal for digital signal processor described in two-way to be exported (10-4), three digital beams are respectively and wave beam (16), left wave beam (17) and right wave beam (18), numeral described in every road are believed Number processor forms by the digital down converter (10-1), matched filter (10-2) and phase shifter (10-3) to connect successively, The digital bea mforming device (10-4) is made up of three adders (10-41), and first in three adders (10-41) adds Two inputs of musical instruments used in a Buddhist or Taoist mass (10-41) output end and two with first phase shifter (10-3) in two phase shifters (10-3) respectively The output end of second matched filter (10-2) connects in individual matched filter (10-2), in three adders (10-41) Output end of two inputs of second adder (10-41) respectively with two matched filters (10-2) is connected, and three add Two inputs of the 3rd adder (10-41) in musical instruments used in a Buddhist or Taoist mass (10-41) are respectively with two matched filters (10-2) The output end of second phase shifter (10-3) connects in the output end of one matched filter (10-2) and two phase shifters (10-3) Connect, the output ends of three adders (10-41) is respectively connected to a power detector (10-5), three power detectors (10-5) Output end is connected with communication interface (10-6)；The antenna (1) is single antenna or the array antenna being made up of multiple antennas.
- 2. according to the antenna for satellite communication in motion system based on digital beam tracking described in claim 1, it is characterised in that：The antenna (1) it is circular polarized antenna, linear polarized antenna or oval circular polarized antenna.
- A kind of 3. tracking of antenna for satellite communication in motion system alignment target satellite as claimed in claim 1 based on digital beam tracking Method, it is characterised in that this method comprises the following steps：Step 1: system initialization：Tracing control main controller (11) control elevation servo motor (14) rotation, drives antenna (1) default luffing angle is moved to；Step 2: azimuth direction tracks：Tracing control main controller (11) control azimuth servomotor (15) rotation, drives day Rotary scanning, the signal of DVB (7) output are amplified line (1) by radiofrequency emitting module (5) in the azimuth direction After Gain tuning, then launch after duplexer (2) receive and isolated with transmission signal through antenna (1)；Antenna (1) The signal received exports after duplexer (2) receive and isolated with transmission signal and gives low-noise amplifier (3), low noise The signal of amplifier (3) amplification duplexer (2) output, on the one hand export to be amplified to Receiver Module (6) and adjusted with gain Exported again after whole and give DVB (7), on the other hand exported and give low-converter (4), the letter that low-converter (4) is received After number down-converting to intermediate-freuqncy signal, device (8) is filtered processing to intermediate-freuqncy signal after filtering successively again, by A/D converter (9) Carry out A/D conversions to become to export after data signal to give digital beam track receiver (10), digital beam track receiver (10) Processing, synthesis and wave beam (16), left wave beam (17) and (18) three, right wave beam are digitized to the two paths of signals that it is received Digital beam, obtain the power P with wave beam (16)a, left wave beam (17) power PbWith the power P of right wave beam (18)c, and according to FormulaThe angle delta θ that satellite direction is deviated to the right with wave beam (16) is calculated, then The control signal that generation adjustment antenna points to the deviation between satellite gives tracing control main controller (11), tracing control main controller (11) control azimuth servomotor (15) rotates, and drives antenna (1) tracking satellite；Wherein, φ is left wave beam (17) and and wave beam (16) deflection angle between；Step 3: inertial navigation tracks：The location position of antenna in step 2 (1) tracking satellite is used by tracing control main controller (11) The dead-center position led, receive the attitude signal for the antenna base that inertia measuring module (13) detects, generation control pitching The signal of the rotational angle and speed of servomotor (14) and bearing servo motor (15) and control elevation servo motor (14) and Bearing servo motor (15) rotates, and elevation servo motor (14) and bearing servo motor (15) drive antenna (1) tracking satellite；Together When, tracing control main controller (11) receives the antenna detected to inertia measuring module (13) of navigation module (12) generation The calibration signal that the attitude signal of base is calibrated, calibration inertia measuring module (13).
- 4. according to the tracking described in claim 3, it is characterised in that：Digital beam track receiver (10) is right in step 2 Its two paths of signals received is digitized processing, synthesis and (18) three wave beam (16), left wave beam (17) and right wave beam numbers Word wave beam, obtain the power P with wave beam (16)a, left wave beam (17) power PbWith the power P of right wave beam (18)cDetailed process For：In digital signal processor described in step 201, two-way, digital down converter (10-1) believes the intermediate frequency digital of bandpass sampling Number it is down-converted on the signal of more Low Medium Frequency, the signal after down coversion retains the work of communication system by matched filter (10-2) Make signal, enter phase shifter (10-3) after removing out-of-band interference signal, phase shifter (10-3) exports after carrying out phase shift to signal；First adder (10-41) in step 202, three adders (10-41) is to by two phase shifters (10-3) First phase shifter (10-3) shifts to second matched filter in signal and two matched filters (10-2) after processing The signal of (10-2) output is overlapped, and is obtained left wave beam (17) and is exported to first in three power detectors (10-5) Power detector (10-5)；Second adder (10-41) in three adders (10-41) is to two matched filter (10- 2) signal of output is overlapped, and is obtained and wave beam (16) and is exported to second power in three power detectors (10-5) Detector (10-5)；The 3rd adder (10-41) in three adders (10-41) is to by two phase shifters (10-3) Second phase shifter (10-3) shifts to first matched filter in signal and two matched filters (10-2) after processing The signal of (10-2) output is overlapped, and is obtained right wave beam (18) and is exported to the 3rd in three power detectors (10-5) Power detector (10-5)；The left wave beam that first power detector (10-5) in step 203, three power detectors (10-5) receives to it (17) power detection is carried out, obtains the power P of left wave beam (17)b；Second power inspection in three power detectors (10-5) Survey device (10-5) receives to it and wave beam (16) and carry out power detection, obtain the power P with wave beam (16)a；Three power The right wave beam (18) that the 3rd power detector (10-5) in detector (10-5) receives to it carries out power detection, obtains The power P of right wave beam (18)c。
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| CN105826660A (en) * | 2016-06-06 | 2016-08-03 | 南京濠暻通讯科技有限公司 | Dual-frequency communication-in-motion satellite receiving antenna system |
| CN106341173A (en) * | 2016-11-05 | 2017-01-18 | 长沙海格北斗信息技术有限公司 | Automatic directed emission system and method of wireless signal |
| CN106712866B (en) * | 2017-01-19 | 2022-12-02 | 南京京迪通信设备有限公司 | Communication-in-motion terminal station system and tracking method thereof |
| CN106887706B (en) * | 2017-03-17 | 2020-06-30 | 王家齐 | Electronic polarization tracking method and device for full-automatic satellite tracking communication antenna |
| CN107885233A (en) * | 2017-10-19 | 2018-04-06 | 安徽工程大学 | A kind of automatic tracking system of satellite-signal |
| CN108493611B (en) * | 2018-03-21 | 2020-07-28 | 北京华力创通科技股份有限公司 | Device, method and system for rapidly aligning communication-in-motion antenna and communication satellite |
| CN109120305B (en) * | 2018-07-04 | 2019-12-03 | 广州杰赛科技股份有限公司 | A kind of digital tracking method of broadband beams, system and equipment |
| FR3086784B1 (en) * | 2018-09-27 | 2020-09-25 | Safran Electronics & Defense | GUIDANCE OF AN AIRCRAFT USING TWO ANTENNAS WITH A DIFFERENT OPENING ANGLE |
| CN113311382B (en) * | 2020-02-26 | 2023-03-14 | 上海交通大学 | Single-channel radio tracking system and method |
| CN113824515B (en) * | 2021-08-06 | 2023-12-01 | 星展测控科技股份有限公司 | Communication device, communication-in-motion apparatus, and servo control method |
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