CN105186102A - Digital-beam-tracking-based communication-in-moving antenna system and tracking method - Google Patents
Digital-beam-tracking-based communication-in-moving antenna system and tracking method Download PDFInfo
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- CN105186102A CN105186102A CN201510585594.1A CN201510585594A CN105186102A CN 105186102 A CN105186102 A CN 105186102A CN 201510585594 A CN201510585594 A CN 201510585594A CN 105186102 A CN105186102 A CN 105186102A
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Abstract
The invention discloses a digital-beam-tracking-based communication-in-moving antenna system comprising a digital beam tracking receiver, a satellite receiver, and a tracking control master controller. The input terminal of the digital beam tracking receiver is connected with two paths of signal receiving processing circuits; and an antenna, a duplexer, a low-noise amplifier, a down converter, a filter and an A/D converter are connected successively and are arranged in each path of signal receiving processing circuit. The input terminal of the satellite receiver is connected with a radio frequency receiving module; and the output terminal of the satellite receiver is connected with a radio frequency transmission module. The input terminal of the tracking control master controller is connected with a navigation module and an inertia measurement module; and the output terminal of the tracking control master controller is connected with a pitching servo motor and an orientation servo motor. In addition, the invention also discloses a tracking method of target satellite alignment by a digital-beam-tracking-based communication-in-moving antenna system. According to the method, the system and method have advantages of reasonable design, convenient realization and usage operation, fast tracking speed, high tracking precision, wide application range, and easy popularization and application.
Description
Technical field
The invention belongs to technical field of satellite communication, be specifically related to a kind of antenna for satellite communication in motion system based on digital beam tracking and tracking.
Background technology
Satellite communications system (being called for short " communication in moving ") refers to and satellite antenna is arranged on (as automobile, train, aircraft, steamer etc.) on mobile vehicle platform, satellite antenna can set up stable communication link with fixed statellite (i.e. geosynchronous satellite), and the stable and unimpeded of communication link can be kept in the process of carrier rapid movement, to realize the system of real time communication.Because fixed statellite is apart from the distance far (about 36000 kilometers) on ground, link loss is large, therefore will realize the broadband connections between mobile vehicle platform and fixed statellite, just must adopt the directional antenna of high-gain.The wave beam of the antenna of high-gain is very narrow simultaneously, must make antenna beam all the time with the stability of certain accurate alignment satellite guarantee communication link.
SOTM satellite antenna following principle detects angular error between controlling antenna wave beam to point and satellite direction according to the satellite-signal that receives, and tracking servo main controller according to error transfer factor antenna direction, thus reaches the object of tracking satellite.In order to improve antenna gain, antenna for satellite communication in motion usually by two antenna elements or more multi-antenna-unit form.Wherein the antenna for satellite communication in motion volume of two antenna element compositions is little, lightweight, but antenna gain is low compared with four antenna elements.The antenna for satellite communication in motion gain of four antenna element compositions wants high, but volume and weight wants large simultaneously.
In sum, the key of antenna for satellite communication in motion system is that make antenna beam aim at communication satellite all the time, core technology is the stable of antenna beam and tracking technique how under mobile vehicle Platform movement state.Wherein, the stable stability based on system clock, crystal oscillator or micromechanics (MEMS) technology of antenna beam, element generally exist variations in temperature, linear acceleration and other etc. factors vary time make the biased of them and proportionality coefficient produce error.Therefore, the key problem in technology of a system stability tracking how to use trace information to correct the error of antenna direction.
The general principle of communication in moving tracking mode detects error angle between controlling antenna wave beam to point and satellite direction according to the satellite-signal received, and controller utilizes this control errors antenna, the direction motion that day alignment error signal is reduced.Obviously, this is a kind of Closed loop track satellite mode.The modes such as step trakcing, conical scanning tracking and single-pulse track are had at present for the tracking mode that satellite communication is conventional.Wherein, conical scanning tracking and step trakcing are all be based upon on the basis of an antenna beam, utilize simple beam scanning around satellite direction, utilize the fringe enclosing direction of amplitude.Implementation structure is simple, cost is low, but tracking accuracy is low simultaneously, and because cone-beam scan tracing departs from satellite direction, system gain is declined, and there is asymmetric problem for non-conical wave beam.Hill climb system antenna beam can not rest on the direction to satelloid, but constantly swings around this direction, and because antenna repeats alternate rotation to realize antenna beam progressively to satelloid on pitching face and azimuth plane, tracking convergence rate is slower; In addition, step trakcing is that when received signal level amplitude of variation is larger, antenna tracking will exist relatively large deviation according to judging that whether antenna is to satelloid with received signal level.And monopulse tracking can realize high precision tracking and tracking velocity is very fast, but system equipment is complicated, has exceeded the requirement that system limits volume, weight and cost.
When communication satellite does not have beacon, and adopt the communication mode of burst type.Now adopt traditional several modes to carry out following the tracks of all because do not have continuous print received signal power for the correction of angular error, effect all can obviously decline.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of structure simple, reasonable in design, realize and use easy to operate, that tracking velocity is fast, tracking accuracy is high, applied widely follows the tracks of based on digital beam antenna for satellite communication in motion system.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of antenna for satellite communication in motion system of following the tracks of based on digital beam, it is characterized in that: comprise digital beam track receiver, satellite receiver and the tracing control main controller connected with digital beam track receiver, the input of described digital beam track receiver is connected to two paths of signals receiving processing circuit, described in every road, Signal reception treatment circuit includes the antenna connected successively, duplexer, low noise amplifier, low-converter, filter and A/D converter, described astronomical cycle is on antenna base, the input of described satellite receiver is connected to Receiver Module, the output of described satellite receiver is connected to radiofrequency emitting module, described duplexer is connected with the output of radiofrequency emitting module, described Receiver Module is connected with the output of low noise amplifier, the input of described tracing control main controller is connected to navigation module and inertia measuring module, and the output of described tracing control main controller is connected to elevation servo motor and bearing servo motor for driving antenna tracking satellite.
The above-mentioned antenna for satellite communication in motion system of following the tracks of based on digital beam, it is characterized in that: described digital beam track receiver comprises the communication interface for connecting tracing control main controller, two-way is respectively used to carry out the digital signal processor of digital processing and the digital bea mforming device for by the signal syntheses of digital signal processor output described in two-way being three digital beams to the signal that Signal reception treatment circuit described in two-way exports, three described digital beams are respectively and wave beam, left wave beam and right wave beam, described in every road, digital signal processor is by the digital down converter connected successively, matched filter and phase shifter composition, described digital bea mforming device is made up of three adders, two inputs of first adder in three adders are connected with the output of second matched filter in the output of first phase shifter in two phase shifters and two matched filters respectively, two inputs of second adder in three adders are connected with the output of two matched filters respectively, two inputs of the 3rd adder in three adders are connected with the output of second phase shifter in the output of first matched filter in two matched filters and two phase shifters respectively, the output of three adders is respectively connected to a power detector, the output of three power detectors is all connected with communication interface.
The above-mentioned antenna for satellite communication in motion system of following the tracks of based on digital beam, is characterized in that: the array antenna that described antenna is single antenna or is made up of multiple antenna.
The above-mentioned antenna for satellite communication in motion system of following the tracks of based on digital beam, is characterized in that: described antenna is circular polarized antenna, linear polarized antenna or oval circular polarized antenna.
Present invention also offers the tracking that a kind of method step is simple, realize convenient, that tracking velocity is fast, tracking accuracy is high, the applied widely antenna for satellite communication in motion system alignment target satellite based on digital beam tracking, it is characterized in that the method comprises the following steps:
Step one, system initialization: described tracing control main controller controls elevation servo motor and rotates, drive antenna movement to the luffing angle preset;
Step 2, azimuth direction are followed the tracks of: described tracing control main controller control azimuth servomotor rotates, drive antenna rotary scanning in the azimuth direction, the signal that satellite receiver exports carries out after amplifications and Gain tuning through radiofrequency emitting module, then carries out going out through antenna transmission after reception and transmitting is isolated through duplexer, the signal that antenna receives through duplexer carry out reception with transmit isolate after export to low noise amplifier, low noise amplifier amplifies the signal that duplexer exports, export to after Receiver Module carries out amplification and Gain tuning on the one hand and export to satellite receiver again, export to low-converter on the other hand, after the signal that low-converter is received down-converts to intermediate-freuqncy signal, intermediate-freuqncy signal more successively after filtering device carry out filtering process, carry out exporting to digital beam track receiver after A/D conversion becomes digital signal through A/D converter, digital beam track receiver carries out digitized processing to its two paths of signals received, synthesis and wave beam, left wave beam and right wave beam three digital beams, obtain the power P with wave beam
a, left wave beam power P
bwith the power P of right wave beam
c, and according to formula
calculate the angle delta θ departing from satellite direction with wave beam to the right, then generate the control signal of deviation between adjustment antenna direction and satellite to tracing control main controller, tracing control main controller control azimuth servomotor rotates, and drives antenna tracking satellite, wherein, φ be left wave beam and and wave beam between deflection angle,
Step 3, inertial navigation are followed the tracks of: the location position of antenna tracking satellite in step 2 is the dead-center position of inertial navigation by tracing control main controller, receive the attitude signal of the described antenna base that inertia measuring module detects, generate and control elevation servo motor and the rotational angle of bearing servo motor and the signal of speed and control elevation servo motor and bearing servo motor rotates, elevation servo motor and bearing servo driven by motor antenna tracking satellite; Meanwhile, tracing control main controller receives the calibrating signal of calibrating the attitude signal of the described antenna base that inertia measuring module detects that navigation module generates, calibration inertia measuring module.
Above-mentioned method, is characterized in that: in step 2, digital beam track receiver carries out digitized processing to its two paths of signals received, and synthesis and wave beam, left wave beam and right wave beam three digital beams, obtain the power P with wave beam
a, left wave beam power P
bwith the power P of right wave beam
cdetailed process be:
In digital signal processor described in step 201, two-way, the digital intermediate frequency signal of bandpass sampling is down-converted on the signal of more Low Medium Frequency by digital down converter, signal after down-conversion retains the working signal of communication system through matched filter, enter phase shifter after removing the outer interference signal of band, phase shifter exports after carrying out phase shift to signal;
First adder in step 202, three adders to be shifted in the signal after process and two matched filters to first phase shifter in two phase shifters the signal that second matched filter export and is superposed, and obtains left wave beam and exports to first power detector in three power detectors; Second adder in three adders superposes the signal that two matched filters export, and obtains with wave beam and exports to second power detector in three power detectors; The 3rd adder in three adders to be shifted in the signal after process and two matched filters to second phase shifter in two phase shifters the signal that first matched filter export and is superposed, and obtains right wave beam and exports to the 3rd power detector in three power detectors;
First power detector in step 203, three power detectors carries out power detection to the left wave beam that it receives, and obtains the power P of left wave beam
b; Second power detector in three power detectors to its receive and wave beam carry out power detection, obtain the power P with wave beam
a; The 3rd power detector in three power detectors carries out power detection to the right wave beam that it receives, and obtains the power P of right wave beam
c.
The present invention compared with prior art has the following advantages:
1, the structure of antenna for satellite communication in motion system of the present invention is simple, reasonable in design, realizes and uses easy to operate.
2, antenna for satellite communication in motion system of the present invention have employed modular design, and flexibility is high, is easy to expansion and upgrades upgrading, being convenient to development and production tandem product.
3, the speed of digital beam track receiver processing signals of the present invention is fast, and intelligence degree is high.
4, 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.
5, the present invention has the ability of quick tracking satellite and higher tracking accuracy, make communication in moving system all the time can tracking satellite by main website constraint, overcome the discontinuous problem of signal that satellite does not have beacon, burst oriented communication brings, improve the survival ability of main website and communication in moving earth station.
6, the present invention can realize the tenacious tracking of antenna for satellite communication in motion system, and Satellite Tracking is effective, applied widely, is not limited to the modulation system whether satellite has beacon and signal, is easy to apply.
In sum, the present invention is reasonable in design, realizes and uses easy to operate, and tracking velocity is fast, and tracking accuracy is high, applied widely, is easy to apply.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
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 Signal reception mode schematic diagram that digital beam of the present invention is followed the tracks of.
Fig. 4 is the Signal reception view that the present invention and wave beam aim 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-satellite receiver; 8-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, antenna for satellite communication in motion system of following the tracks of based on digital beam of the present invention, comprise digital beam track receiver 10, satellite receiver 7 and the tracing control main controller 11 connected with digital beam track receiver 10, the input of described digital beam track receiver 10 is connected to two paths of signals receiving processing circuit, Signal reception treatment circuit described in every road includes the antenna 1 connected successively, duplexer 2, low noise amplifier 3, low-converter 4, filter 8 and A/D converter 9, described antenna 1 is arranged on antenna base, the input of described satellite receiver 7 is connected to Receiver Module 6, the output of described satellite receiver 7 is connected to radiofrequency emitting module 5, described duplexer 2 is connected with the output of radiofrequency emitting module 5, described Receiver Module 6 is connected with the output of low noise amplifier 3, the input of described tracing control main controller 11 is connected to navigation module 12 and inertia measuring module 13, and the output of described tracing control main controller 11 is connected to elevation servo motor 14 and bearing servo motor 15 for driving antenna 1 tracking satellite.
As shown in Figure 2, in the present embodiment, described digital beam track receiver 10 comprises the communication interface 10-6 for connecting tracing control main controller 11, two-way is respectively used to carry out the digital signal processor of digital processing and the digital bea mforming device 10-4 for by the signal syntheses of digital signal processor output described in two-way being three digital beams to the signal that Signal reception treatment circuit described in two-way exports, three described digital beams are respectively and wave beam 16, left wave beam 17 and right wave beam 18, digital signal processor described in every road is by the digital down converter 10-1 connected successively, matched filter 10-2 and phase shifter 10-3 forms, described digital bea mforming device 10-4 is made up of three adder 10-41, two inputs of first adder 10-41 in three adder 10-41 are connected with the output of second matched filter 10-2 in the output of first phase shifter 10-3 in two phase shifter 10-3 and two matched filter 10-2 respectively, two inputs of second adder 10-41 in three adder 10-41 are connected with the output of two matched filter 10-2 respectively, two inputs of the 3rd adder 10-41 in three adder 10-41 are connected with the output of second phase shifter 10-3 in the output of first matched filter 10-2 in two matched filter 10-2 and two phase shifter 10-3 respectively, the output of three adder 10-41 is respectively connected to a power detector 10-5, the output of three power detector 10-5 is all connected with communication interface 10-6.During concrete enforcement, described digital beam track receiver 10 adopts FPGA module, DSP or ARM microcontroller to realize.
In the present embodiment, the array antenna that described antenna 1 is single antenna or is made up of multiple antenna.During concrete enforcement, described array antenna is the two or more antenna elements in orientation or in pitching.
In the present embodiment, described antenna 1 is circular polarized antenna, linear polarized antenna or oval circular polarized antenna.
During concrete enforcement, described circular polarized antenna also can be synthesized by linear polarized antenna, and the rotation direction of circular polarized antenna can be left-hand circular polarization, also can be right-handed circular polarization, selects according to concrete applied environment.And when specifically implementing, all functional units are all arranged on unified mounting structure, and install in the enclosure.Antenna 1 is connected with duplexer 2 by coaxial cable.
The tracking of the antenna for satellite communication in motion system alignment target satellite based on digital beam tracking of the present invention, comprises the following steps:
Step one, system initialization: described tracing control main controller 11 controls elevation servo motor 14 and rotates, drive antenna 1 to move to default luffing angle;
Step 2, azimuth direction are followed the tracks of: described tracing control main controller 11 control azimuth servomotor 15 rotates, drive antenna 1 rotary scanning in the azimuth direction, the signal that satellite receiver 7 exports after radiofrequency emitting module 5 carries out amplifications and Gain tuning, then carries out launching through antenna 1 after reception and transmitting is isolated through duplexer 2, the signal that antenna 1 receives through duplexer 2 carry out reception with transmit isolate after export to low noise amplifier 3, low noise amplifier 3 amplifies the signal that duplexer 2 exports, export to after Receiver Module 6 carries out amplification and Gain tuning on the one hand and export to satellite receiver 7 again, export to low-converter 4 on the other hand, after the signal that low-converter 4 is received down-converts to intermediate-freuqncy signal, intermediate-freuqncy signal more successively after filtering device 8 carry out filtering process, carry out exporting to digital beam track receiver 10 after A/D conversion becomes digital signal through A/D converter 9, digital beam track receiver 10 carries out digitized processing to its two paths of signals received, synthesis and wave beam 16, left wave beam 17 and right wave beam 18 3 digital beams, obtain the power P with wave beam 16
a, left wave beam 17 power P
bwith the power P of right wave beam 18
c, and according to formula
calculate the angle delta θ departing from satellite direction with wave beam 16 to the right, then the control signal of deviation between adjustment antenna direction and satellite is generated to tracing control main controller 11, tracing control main controller 11 control azimuth servomotor 15 rotates, and drives antenna 1 tracking satellite, wherein, φ be left wave beam 17 and and wave beam 16 between deflection angle,
During concrete enforcement, with the angled relationships in wave beam 16, left wave beam 17 and right wave beam 18 3 digital beams and orientation, satellite place be: as shown in Figure 3, the angle of satellite direction Δ θ is departed to the right with wave beam 16, left wave beam 17 is positioned at the left side with wave beam 16, left wave beam 17 and and wave beam 16 between deflection angle be φ; Right wave beam 18 is positioned at the right side with wave beam 16, right wave beam 18 and and wave beam 16 between deflection angle be-φ; Deflection angle between left wave beam 17 and right wave beam 18 is 2 φ; With the relativeness between wave beam 16, left wave beam 17 and right wave beam 18 3 digital beams is fixing, so when departing from satellite direction with wave beam 16, left wave beam 17 and right wave beam 18 depart from identical angle equally.When departing from the angle of satellite direction Δ θ to the right with wave beam 16, and the position of satellite-signal that receives of wave beam 16 is positioned at the A point of corresponding wave beam, and corresponding power is P
a; The position of the satellite-signal that left wave beam 17 receives is positioned at the B point of corresponding wave beam, and corresponding power is P
b; The position of the satellite-signal that right wave beam 18 receives is positioned at the C point of corresponding wave beam, and corresponding power is P
c.As shown in Figure 4, when aiming at satellite direction with wave beam 16, Δ θ=0, the position of the satellite-signal received with wave beam 16 is positioned at the A point of corresponding wave beam, the position of the satellite-signal that left wave beam 17 receives is positioned at the B point of corresponding wave beam, the position of the satellite-signal that right wave beam 18 receives is positioned at the C point of corresponding wave beam, and B point and C point overlap, and the power P of wave beam 16
areach maximum, P
b=P
c.
Step 3, inertial navigation are followed the tracks of: the location position of antenna in step 21 tracking satellite is the dead-center position of inertial navigation by tracing control main controller 11, receive the attitude signal of the described antenna base that inertia measuring module 13 detects, generate and control elevation servo motor 14 and the rotational angle of bearing servo motor 15 and the signal of speed and control elevation servo motor 14 and bearing servo motor 15 rotates, elevation servo motor 14 and bearing servo motor 15 drive antenna 1 tracking satellite; Meanwhile, tracing control main controller 11 receives the calibrating signal of calibrating the attitude signal of the described antenna base that inertia measuring module 13 detects that navigation module 12 generates, calibration inertia measuring module 13.During concrete enforcement, while unlatching antenna for satellite communication in motion system, inertia measuring module 13 has just been started working, and the signal that just tracing control main controller 11 pairs of inertia measuring modules 13 export does not deal with, until just start process after completing steps two.In addition, when antenna for satellite communication in motion system does not have Received signal strength for a long time, antenna for satellite communication in motion system enters sector scanning or restart among a small circle.
In the present embodiment, in step 2, digital beam track receiver 10 carries out digitized processing to its two paths of signals received, and synthesis and wave beam 16, left wave beam 17 and right wave beam 18 3 digital beams, obtain the power P with wave beam 16
a, left wave beam 17 power P
bwith the power P of right wave beam 18
cdetailed process be:
In digital signal processor described in step 201, two-way, the digital intermediate frequency signal of bandpass sampling is down-converted on the signal of more Low Medium Frequency by digital down converter 10-1, signal after down-conversion retains the working signal of communication system through matched filter 10-2, enter phase shifter 10-3 after removing the outer interference signal of band, phase shifter 10-3 exports after carrying out phase shift to signal;
First adder 10-41 in step 202, three adder 10-41 to shift in the signal after process and two matched filter 10-2 to first phase shifter 10-3 in two phase shifter 10-3 the signal that second matched filter 10-2 export and superposes, and obtains left wave beam 17 and exports to first power detector 10-5 in three power detector 10-5; Second adder 10-41 in three adder 10-41 superposes the signal that two matched filter 10-2 export, and obtains with wave beam 16 and exports to second power detector 10-5 in three power detector 10-5; The 3rd adder 10-41 in three adder 10-41 to shift in the signal after process and two matched filter 10-2 to second phase shifter 10-3 in two phase shifter 10-3 the signal that first matched filter 10-2 export and superposes, and obtains right wave beam 18 and exports to the 3rd power detector 10-5 in three power detector 10-5;
First power detector 10-5 in step 203, three power detector 10-5 carries out power detection to the left wave beam 17 that it receives, and obtains the power P of left wave beam 17
b; Second power detector 10-5 in three power detector 10-5 to its receive and wave beam 16 carry out power detection, obtain the power P with wave beam 16
a; The 3rd power detector 10-5 in three power detector 10-5 carries out power detection to the right wave beam 18 that it receives, and obtains the power P of right wave beam 18
c.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection range of technical solution of the present invention.
Claims (6)
1. an antenna for satellite communication in motion system of following the tracks of based on digital beam, it is characterized in that: comprise digital beam track receiver (10), satellite receiver (7) and the tracing control main controller (11) connected with digital beam track receiver (10), the input of described digital beam track receiver (10) is connected to two paths of signals receiving processing circuit, Signal reception treatment circuit described in every road includes the antenna (1) connected successively, duplexer (2), low noise amplifier (3), low-converter (4), filter (8) and A/D converter (9), described antenna (1) is arranged on antenna base, the input of described satellite receiver (7) is connected to Receiver Module (6), the output of described satellite receiver (7) is connected to radiofrequency emitting module (5), described duplexer (2) is connected with the output of radiofrequency emitting module (5), described Receiver Module (6) is connected with the output of low noise amplifier (3), the input of described tracing control main controller (11) is connected to navigation module (12) and inertia measuring module (13), and the output of described tracing control main controller (11) is connected to elevation servo motor (14) and bearing servo motor (15) for driving antenna (1) tracking satellite.
2. according to antenna for satellite communication in motion system of following the tracks of based on digital beam according to claim 1, it is characterized in that: described digital beam track receiver (10) comprises the communication interface (10-6) for connecting tracing control main controller (11), two-way is respectively used to carry out the digital signal processor of digital processing and the digital bea mforming device (10-4) for by the signal syntheses of digital signal processor output described in two-way being three digital beams to the signal that Signal reception treatment circuit described in two-way exports, three described digital beams are respectively and wave beam (16), left wave beam (17) and right wave beam (18), digital signal processor described in every road is by the digital down converter connected successively (10-1), matched filter (10-2) and phase shifter (10-3) composition, described digital bea mforming device (10-4) is made up of three adders (10-41), two inputs of first adder (10-41) in three adders (10-41) are connected with the output of second matched filter (10-2) in the output of first phase shifter (10-3) in two phase shifters (10-3) and two matched filters (10-2) respectively, two inputs of second adder (10-41) in three adders (10-41) are connected with the output of two matched filters (10-2) respectively, two inputs of the 3rd adder (10-41) in three adders (10-41) are connected with the output of second phase shifter (10-3) in the output of first matched filter (10-2) in two matched filters (10-2) and two phase shifters (10-3) respectively, the output of three adders (10-41) is respectively connected to a power detector (10-5), the output of three power detectors (10-5) is all connected with communication interface (10-6).
3. according to antenna for satellite communication in motion system of following the tracks of based on digital beam according to claim 1, it is characterized in that: described antenna (1) is single antenna or the array antenna that is made up of multiple antenna.
4. according to antenna for satellite communication in motion system of following the tracks of based on digital beam according to claim 1, it is characterized in that: described antenna (1) is circular polarized antenna, linear polarized antenna or oval circular polarized antenna.
5., as claimed in claim 2 based on a tracking for the antenna for satellite communication in motion system alignment target satellite of digital beam tracking, it is characterized in that the method comprises the following steps:
Step one, system initialization: described tracing control main controller (11) controls elevation servo motor (14) and rotates, drive antenna (1) to move to default luffing angle;
Step 2, azimuth direction are followed the tracks of: described tracing control main controller (11) control azimuth servomotor (15) rotates, drive antenna (1) rotary scanning in the azimuth direction, the signal that satellite receiver (7) exports after radiofrequency emitting module (5) carries out amplification and Gain tuning, then through duplexer (2) carry out reception with transmit isolate after launch through antenna (1), the signal that antenna (1) receives through duplexer (2) carry out reception with transmit isolate after export to low noise amplifier (3), low noise amplifier (3) amplifies the signal that duplexer (2) exports, export to after Receiver Module (6) carries out amplification and Gain tuning on the one hand and export to satellite receiver (7) again, export to low-converter (4) on the other hand, after the signal that low-converter (4) is received down-converts to intermediate-freuqncy signal, intermediate-freuqncy signal more successively after filtering device (8) carry out filtering process, carry out exporting to digital beam track receiver (10) after A/D conversion becomes digital signal through A/D converter (9), digital beam track receiver (10) carries out digitized processing to its two paths of signals received, synthesis and wave beam (16), left wave beam (17) and right wave beam (18) three digital beams, obtain the power P with wave beam (16)
a, left wave beam (17) power P
bwith the power P of right wave beam (18)
c, and according to formula
calculate the angle delta θ departing from satellite direction with wave beam (16) to the right, then the control signal of deviation between adjustment antenna direction and satellite is generated to tracing control main controller (11), tracing control main controller (11) control azimuth servomotor (15) rotates, and drives antenna (1) tracking satellite, wherein, φ be left wave beam (17) and and wave beam (16) between deflection angle,
Step 3, inertial navigation are followed the tracks of: the location position of antenna in step 2 (1) tracking satellite is the dead-center position of inertial navigation by tracing control main controller (11), receive the attitude signal of the described antenna base that inertia measuring module (13) detects, generate and control elevation servo motor (14) and the rotational angle of bearing servo motor (15) and the signal of speed and control elevation servo motor (14) and bearing servo motor (15) rotates, elevation servo motor (14) and bearing servo motor (15) drive antenna (1) tracking satellite; Simultaneously, tracing control main controller (11) receives the calibrating signal of calibrating the attitude signal of the described antenna base that inertia measuring module (13) detects that navigation module (12) generates, calibration inertia measuring module (13).
6. according to tracking according to claim 5, it is characterized in that: in step 2, digital beam track receiver (10) carries out digitized processing to its two paths of signals received, synthesis and wave beam (16), left wave beam (17) and right wave beam (18) three digital beams, obtain the power P with wave beam (16)
a, left wave beam (17) power P
bwith the power P of right wave beam (18)
cdetailed process be:
In digital signal processor described in step 201, two-way, the digital intermediate frequency signal of bandpass sampling is down-converted on the signal of more Low Medium Frequency by digital down converter (10-1), signal after down-conversion retains the working signal of communication system through matched filter (10-2), enter phase shifter (10-3) after removing the outer interference signal of band, phase shifter (10-3) exports after carrying out phase shift to signal;
First adder (10-41) in step 202, three adders (10-41) to be shifted in the signal after process and two matched filters (10-2) to first phase shifter (10-3) in two phase shifters (10-3) signal that second matched filter (10-2) export and is superposed, and obtains left wave beam (17) and exports to first power detector (10-5) in three power detectors (10-5); Second adder (10-41) in three adders (10-41) superposes the signal that two matched filters (10-2) export, and obtains with wave beam (16) and exports to second power detector (10-5) in three power detectors (10-5); The 3rd adder (10-41) in three adders (10-41) to be shifted in the signal after process and two matched filters (10-2) to second phase shifter (10-3) in two phase shifters (10-3) signal that first matched filter (10-2) export and is superposed, and obtains right wave beam (18) and exports to the 3rd power detector (10-5) in three power detectors (10-5);
First power detector (10-5) in step 203, three power detectors (10-5) carries out power detection to the left wave beam (17) that it receives, and obtains the power P of left wave beam (17)
b; Second power detector (10-5) in three power detectors (10-5) to its receive and wave beam (16) carry out power detection, obtain the power P with wave beam (16)
a; The 3rd power detector (10-5) in three power detectors (10-5) carries out power detection to the right wave beam (18) that it receives, and obtains the power P of right wave beam (18)
c.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN108493611A (en) * | 2018-03-21 | 2018-09-04 | 北京华力创通科技股份有限公司 | Antenna for satellite communication in motion and telecommunication satellite fast alignment device, method and system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060220949A1 (en) * | 2005-03-31 | 2006-10-05 | Nec Corporation | Interferometer-type rader |
| CN101109810A (en) * | 2007-08-24 | 2008-01-23 | 重庆大学 | Method for improving tracing precision of digital single pulse system |
| CN101916120A (en) * | 2010-08-04 | 2010-12-15 | 中国人民解放军第二炮兵工程学院 | System and method for tracking motion communication two-beam pseudo monopulse |
| US20140327576A1 (en) * | 2013-02-07 | 2014-11-06 | Rajendra Kumar | Systems and methods for multi-beam antenna architectures for adaptive nulling of interference signals |
| CN204905423U (en) * | 2015-09-15 | 2015-12-23 | 西安星通通信科技有限公司 | Lead to antenna system in moving |
-
2015
- 2015-09-15 CN CN201510585594.1A patent/CN105186102B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060220949A1 (en) * | 2005-03-31 | 2006-10-05 | Nec Corporation | Interferometer-type rader |
| CN101109810A (en) * | 2007-08-24 | 2008-01-23 | 重庆大学 | Method for improving tracing precision of digital single pulse system |
| CN101916120A (en) * | 2010-08-04 | 2010-12-15 | 中国人民解放军第二炮兵工程学院 | System and method for tracking motion communication two-beam pseudo monopulse |
| US20140327576A1 (en) * | 2013-02-07 | 2014-11-06 | Rajendra Kumar | Systems and methods for multi-beam antenna architectures for adaptive nulling of interference signals |
| CN204905423U (en) * | 2015-09-15 | 2015-12-23 | 西安星通通信科技有限公司 | Lead to antenna system in moving |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106712866A (en) * | 2017-01-19 | 2017-05-24 | 京信通信技术(广州)有限公司 | Ground station system of satellite communication in motion and system tracking method |
| CN106887706A (en) * | 2017-03-17 | 2017-06-23 | 王家齐 | Full-automatic Satellite Tracking communication antenna electronic polarization tracking and device |
| CN107885233A (en) * | 2017-10-19 | 2018-04-06 | 安徽工程大学 | A kind of automatic tracking system of satellite-signal |
| CN108493611A (en) * | 2018-03-21 | 2018-09-04 | 北京华力创通科技股份有限公司 | Antenna for satellite communication in motion and telecommunication satellite fast alignment device, method and system |
| 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 |
| CN109120305A (en) * | 2018-07-04 | 2019-01-01 | 广州杰赛科技股份有限公司 | A kind of digital tracking method of broadband beams, system and equipment |
| CN113272671A (en) * | 2018-09-27 | 2021-08-17 | 赛峰电子与防务公司 | Aircraft guidance using two antennas with different opening angles |
| CN113272671B (en) * | 2018-09-27 | 2023-12-22 | 赛峰电子与防务公司 | Aircraft guidance using two antennas with different opening angles |
| CN113311382A (en) * | 2020-02-26 | 2021-08-27 | 上海交通大学 | Single-channel radio tracking system and method |
| CN113824515A (en) * | 2021-08-06 | 2021-12-21 | 星展测控科技股份有限公司 | Communication device, communication-in-motion equipment and servo control method |
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