CN107885233A - A kind of automatic tracking system of satellite-signal - Google Patents
A kind of automatic tracking system of satellite-signal Download PDFInfo
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- CN107885233A CN107885233A CN201710974593.5A CN201710974593A CN107885233A CN 107885233 A CN107885233 A CN 107885233A CN 201710974593 A CN201710974593 A CN 201710974593A CN 107885233 A CN107885233 A CN 107885233A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/10—Control of position or direction without using feedback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- Automation & Control Theory (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of automatic tracking system of satellite-signal,Including automatic tracking cell,Ripple control unit and step trakcing module,The automatic tracking cell includes FPGA controller and signal processing unit,The bidirectional port of the FPGA controller is connected by control line with signal processing unit,The input of the FPGA controller receives the analog signal of analog-digital converter,The input of the analog-digital converter is connected by radio-frequency channel with receiving array,The bidirectional port of the receiving array is connected with emission array,The output end of the emission array is connected by ripple control unit with signal processing unit,Satellite maximum can be obtained by combining program tracing and step trakcing method,The azimuth of adjustment antenna platform and the angle of pitch is controlled to carry out corresponding angle compensation to posture using FPGA controller,So that satellite antenna is remained to star,Improve the tracking performance of satellite,It is practical.
Description
Technical field
The present invention relates to automatic tracking system technical field, specially a kind of automatic tracking system of satellite-signal.
Background technology
The application field of satellite is very extensive, and the difference in functionality being had according to its own can be divided into numerous species, from people
Since class enters space, function and the application of satellite are flooded with our life, and satellite television is one of satellite application.Satellite electricity
Realized depending on broadcasting by synchronous satellite forwarding capability, floor portion mouth launches related audio-video signal to synchronous satellite, synchronous
This signal is descended acoustic vision signal by satellite according to a certain direction, the region that signal is capped all can W set by reception
For reception signal is carried out, program is watched：
(1) during in-car TV the most important key issue of system be to maintain antenna platform stability and accurate antenna from
Motion tracking algorithm.Because automobile is the carrier that moves at any time, direction of traffic can be with the change of road and the change of geographic factor
And change, for example pitch attitude change and azimuthal variation occurs when intermountain travels in automobile unavoidably, these factors difference
The angle of pitch and azimuth of antenna are had an impact, vehicle-mounted satellite antenna is ultimately resulted in and accurately satellite can not be realized and be expert in real time
Watch TV section during sailing；
(2) antenna on existing earth station changes the quite faint electromagnetic wave energy for being collected into satellite antenna transmitting
The consistent high frequency power of working frequency and pass to receiver.Antenna can preferably complete the direct shadow of reception to satellite-signal
Ring satellite communication quality.Satellite antenna can be control system primary operational purpose to satelloid.The species of antenna have it is a variety of, its
Middle paraboloid satellite antenna efficiency is best, therefore the ratio applied is wide, and still, the volume of the antenna is bigger, for satellite
The tracing system of signal is more difficult, and antenna compensation speed is slow, tracing property is bad, range of movement is limited, system boot restarts the used time
It is long etc..
The content of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of automatic tracking system of satellite-signal, with reference to
Program tracing and step trakcing method can obtain satellite maximum, utilize the side of FPGA controller control adjustment antenna platform
Parallactic angle and the angle of pitch carry out corresponding angle compensation to posture so that satellite antenna is remained to star, improves chasing after for satellite
Track performance, it is practical, it can effectively solve the problem that the problem of background technology proposes.
The technical solution adopted for the present invention to solve the technical problems is：A kind of automatic tracking system of satellite-signal, bag
Automatic tracking cell, ripple control unit and step trakcing module are included, the automatic tracking cell is included at FPGA controller and signal
Unit is managed, the bidirectional port of the FPGA controller is connected by control line with signal processing unit, the FPGA controller
Input receive the analog signal of analog-digital converter, the input of the analog-digital converter passes through radio-frequency channel and receiving array
It is connected, the receiving array is divided into four array modules, and the bidirectional port of the receiving array is connected with emission array, institute
The output end for stating emission array is connected by ripple control unit with signal processing unit, and the ripple control unit is internally provided with tracking
Algoritic module, the track algorithm module include microcontroller and Man Machine Interface, and the output end of the microcontroller passes through
Man Machine Interface is connected with human-computer interaction module, and the input of the microcontroller is connected with GPS module, the micro-control
The input of device processed is also associated with electronic compass and six axle gyroscopes, the output end feedback link of the microcontroller to electronics sieve
The control terminal of disk and six axle gyroscopes.
As a kind of preferable technical scheme of the present invention, the output end of the microcontroller is also associated with azimuth-drive motor and bowed
Motor is faced upward, the output end of the azimuth-drive motor and pitching motor is connected by wireless transceiver with Omni-directional antenna, described
The output end of Omni-directional antenna is connected by step by step modulating module with signal detector, the control terminal of the signal detector with
The control terminal of microcontroller is connected.
As a kind of preferable technical scheme of the present invention, output end and the step trakcing module phase of the step by step modulating module
Connection, the step trakcing module include filter amplifier and steering controller, and the output end of the filter amplifier connects respectively
It is connected to maximum detection algorithm and instantaneous value detection algorithm, the output end of the maximum detection algorithm and instantaneous value detection algorithm
It is connected by comparator with steering controller, the output end of the steering controller is connected with Omni-directional antenna, described complete
The output end of azimuth anteena is connected by field strength detection module with filter amplifier.
As a kind of preferable technical scheme of the present invention, the output end of the human-computer interaction module is connected with PC, institute
State PC and be internally provided with Labview control modules.
As a kind of preferable technical scheme of the present invention, the output end of the FPGA controller passes through digital analog converter and ripple
Beam processing module is connected.
As a kind of preferable technical scheme of the present invention, the wave beam processing module includes modulator, balanced device and upper change
Frequency device, the modulator receive beam signal, and the output end of the modulator is connected by balanced device with upconverter, described
The output end of upconverter is connected with relay-operated controller, output end and the signal processing unit phase of the relay-operated controller
Connection.
As a kind of preferable technical scheme of the present invention, the human-computer interaction module includes LCDs and control is pressed
Key, the output end of the control button are connected by keyboard scan module with microcontroller.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention uses the program tracing of opened loop control inside tracing system, does not take beacon signal as tracking
Foundation, when occurring to star deviation, even if antenna driving, to the angle position calculated, also not necessarily can guarantee that can receive signal
(or receive signal weaker, cause have mosaic in image).Step trakcing is used in this case, so that it may effective solution
Certainly program tracks the problem of no signal or weak output signal.Step trakcing tracks the own basis determined to star general location in program
On, search, until find signal maximum, automatic tracking cell and step trakcing module can be combined with each other shape step by step
Into complementation, the high efficiency to star can be ensured by program tracing, and can ensures the accuracy to star by step trakcing method
With the very big satellite-signal value of acquisition, the performance of satellite fix tracking is improved, and follows the trail of precision and improves, it is practical；
(2) fine control of step by step modulating module of the present invention carries out step by step modulating satellite according to step trakcing method, for making up
Angle calculation error, driving antenna are searched for, just stopped until finding signal maximum, this is day step by step in satellite-signal area
The master that line obtains signal extreme value will walk Sudden, reduce the intensity of satellite antenna search, save certain tracing system expense.
(3) tracing system of the invention is defeated to gyroscope by microcontroller using Gyroscopic stabilization tracking system
The real time data acquisition gone out, each time interval are entirely that accurately tally function is real by the timer of microcontroller
It is existing.In real process, due to the movement of carrier, it is certain to produce gyroscope certain disturbance, therefore, gyro data
Processing sets certain threshold value, and processing is just compensated more than data as defined in wealthy value, for ensureing the stability of antenna platform,
Improve positioning precision.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the step by step modulating module structural representation of the present invention；
Fig. 3 is the wave beam processing module modular structure schematic diagram of the present invention；
In figure：The automatic tracking cell of 1-；2- ripple control units；3- step trakcing modules；
100-FPGA controllers；101- signal processing units；102- analog-digital converters；103- radio-frequency channels；104- is received
Array；105- emission arrays；106- digital analog converters；107- wave beam processing modules；108- modulators；109- balanced devices；110-
Upconverter；111- relay-operated controllers；
200- track algorithm modules；201- microcontrollers；202- Man Machine Interfaces；203- human-computer interaction modules；204-
GPS module；205- electronic compass；The axle gyroscopes of 206- six；207- azimuth-drive motors；208- pitching motors；209- wireless transceivers；
210- Omni-directional antennas；211- step by step modulating modules；212- signal detectors；213-PC machines；214-Labview control modules；
215- LCDs；216- control buttons；217- keyboard scan modules；
300- filter amplifiers；301- steering controllers；302- maximum detection algorithms；303- instantaneous value detection algorithms；
304- comparators；305- field strength detection modules.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
The direction and position term that the present invention is previously mentioned, for example, " on ", " in ", " under ", "front", "rear", "left", "right", " interior ", "
Outside ", " side " etc., only it is direction and position with reference to annexed drawings.Therefore, the direction and position term used is to illustrate
And understand the present invention, and it is not used to the limitation present invention.
Embodiment：
As shown in figure 1, the invention provides a kind of automatic tracking system of satellite-signal, including automatic tracking cell 1, ripple
Unit 2 and step trakcing module 3 are controlled, the automatic tracking cell 1 includes FPGA controller 100 and signal processing unit 101, institute
The output end for stating FPGA controller 100 is connected by digital analog converter 106 with wave beam processing module 107, the FPGA controls
The bidirectional port of device 100 is connected by control line with signal processing unit 101, the input termination of the FPGA controller 100
The analog signal of analog-digital converter 102 is received, the input of the analog-digital converter 102 passes through radio-frequency channel 103 and receiving array
104 are connected, and the receiving array 104 divides for four array modules, the bidirectional port and emission array of the receiving array 104
105 are connected, and the output end of the emission array 105 is connected by ripple control unit 2 with signal processing unit 101, the ripple
Control unit 2 is internally provided with track algorithm module 200, and the track algorithm module 200 includes microcontroller 201 and man-machine interaction
Interface 202, the output end of the microcontroller 201 are connected by Man Machine Interface 202 with human-computer interaction module 203, institute
The output end for stating human-computer interaction module 203 is connected with PC 213, and the human-computer interaction module 203 includes LCDs 215
With control button 216, the output end of the control button 216 is connected by keyboard scan module 217 with microcontroller 201,
The PC 213 is internally provided with Labview control modules 214, input and the phase of GPS module 204 of the microcontroller 201
Connection, the input of the microcontroller 201 are also associated with the axle gyroscope 206 of electronic compass 205 and six, the microcontroller
Control terminal of the 201 output end feedback link to the axle gyroscope 206 of electronic compass 205 and six.
The automatic tracking cell 1 is completed target according to carrier platform Ti Gong Load bodies attitude informations and guiding times breath and searched
Rope, angular surveying and tracking filter, and mountain beam position information is given, pass to ripple control unit and complete receiving array and emission array
Wave beam control so that transmitting-receiving array beamses be directed at satellite direction all the time.While angleonly tracking is completed, autotracking unit will
Reception signal is synthesized with wave beam and exported after centre frequency is converted into input IF-FRE, is carried out for signal processing unit 101
Signal transacting.
As shown in figure 1, the output end of the microcontroller 201 is also associated with azimuth-drive motor 207 and pitching motor 208, institute
The output end for stating azimuth-drive motor 207 and pitching motor 208 is connected by wireless transceiver 209 with Omni-directional antenna 210, institute
The output end for stating Omni-directional antenna 210 is connected by step by step modulating module 211 with signal detector 212, the signal detection
The control terminal of device 212 is connected with the control terminal of microcontroller 201, and tracing system is realized using microcontroller 201 and initialized
After, receive the offer of GPS module 204 through gentry's degrees of data, subsequently into the stage of resolving, obtain antenna by algorithm needs more to star
The azimuth wanted and the angle of pitch；This is right with the electronic compass number of degrees for beginning after obtaining satellite angle, draws the difference between both data
Value, using this difference as guidance, motor drives antenna to specified angle position.Algorithm above belongs to program tracking law areas,
Using the quick to star feature of program tracking, the maximum of step trakcing scanning signal will be utilized below.
As shown in Fig. 2 the output end of the step by step modulating module 211 is connected with step trakcing module 3, the stepping with
Track module 3 includes filter amplifier 300 and steering controller 301, and the output end of the filter amplifier 300 is connected to pole
Big value detection algorithm 302 and instantaneous value detection algorithm 303, the maximum detection algorithm 302 and instantaneous value detection algorithm 303
Output end is connected by comparator 304 with steering controller 301, output end and the comprehensive day of the steering controller 301
Line 210 is connected, and the output end of the Omni-directional antenna 210 is connected by field strength detection module 305 with filter amplifier 300
Connect, adjust stepping tracing algorithm using step by step modulating module 21, and calculate using maximum detection algorithm 302 and instantaneous value detection
Method 303 is handled the signal of detection, after antenna scanning to satellite maximum, automatically switches to tracing mode.Tracking
State is another important step after antenna scanning.Tracking mainly carries out angle by gyroscope device to antenna attitude
Degree is compensated to realize, gyro data can calculate the angle variable quantity of carrier under the domination of certain algorithm, and the variable quantity is big
Small combination stepping electrification often walks angle value, and by simple Mathematical treatment, corresponding pulses number controlled motor is sent by microcontroller
Angle compensation is carried out to variable quantity, so as to ensure that antenna attitude is steady..
As shown in figure 3, the wave beam processing module 107 includes modulator 108, balanced device 109 and upconverter 110, institute
State modulator 108 and receive beam signal, the output end of the modulator 108 is connected by balanced device 109 with upconverter 110
Connect, the output end of the upconverter 110 is connected with relay-operated controller 111, the output end of the relay-operated controller 111
It is connected with signal processing unit 101.
In summary, the main characteristic of the invention lies in that：
(1) present invention uses the program tracing of opened loop control inside tracing system, does not take beacon signal as tracking
Foundation, when occurring to star deviation, even if antenna driving, to the angle position calculated, also not necessarily can guarantee that can receive signal
(or receive signal weaker, cause have mosaic in image).Step trakcing is used in this case, so that it may effective solution
Certainly program tracks the problem of no signal or weak output signal.Step trakcing tracks the own basis determined to star general location in program
On, search, until find signal maximum, automatic tracking cell and step trakcing module can be combined with each other shape step by step
Into complementation, the high efficiency to star can be ensured by program tracing, and can ensures the accuracy to star by step trakcing method
With the very big satellite-signal value of acquisition, the performance of satellite fix tracking is improved, and follows the trail of precision and improves, it is practical；
(2) fine control of step by step modulating module of the present invention carries out step by step modulating satellite according to step trakcing method, for making up
Angle calculation error, driving antenna are searched for, just stopped until finding signal maximum, this is day step by step in satellite-signal area
The master that line obtains signal extreme value will walk Sudden, reduce the intensity of satellite antenna search, save certain tracing system expense.
(3) tracing system of the invention is defeated to gyroscope by microcontroller using Gyroscopic stabilization tracking system
The real time data acquisition gone out, each time interval are entirely that accurately tally function is real by the timer of microcontroller
It is existing.In real process, due to the movement of carrier, it is certain to produce gyroscope certain disturbance, therefore, gyro data
Processing sets certain threshold value, and processing is just compensated more than data as defined in wealthy value, for ensureing the stability of antenna platform,
Improve positioning precision.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (7)
- A kind of 1. automatic tracking system of satellite-signal, it is characterised in that：Including automatic tracking cell (1), ripple control unit (2) and Step trakcing module (3), the automatic tracking cell (1) include FPGA controller (100) and signal processing unit (101), institute The bidirectional port for stating FPGA controller (100) is connected by control line with signal processing unit (101), the FPGA controller (100) input receives the analog signal of analog-digital converter (102), and the input of the analog-digital converter (102) is by penetrating Frequency passage (103) is connected with receiving array (104), and the receiving array (104) is divided into four array modules, the reception battle array The bidirectional port of row (104) is connected with emission array (105), and the output end of the emission array (105) passes through ripple control unit (2) it is connected with signal processing unit (101), the ripple control unit (2) is internally provided with track algorithm module (200), described Track algorithm module (200) includes microcontroller (201) and Man Machine Interface (202), the output of the microcontroller (201) End be connected by Man Machine Interface (202) with human-computer interaction module (203), the input of the microcontroller (201) and GPS module (204) is connected, and the input of the microcontroller (201) is also associated with electronic compass (205) and six axle gyroscopes (206), control of the output end feedback link of the microcontroller (201) to electronic compass (205) and six axle gyroscopes (206) End.
- A kind of 2. automatic tracking system of satellite-signal according to claim 1, it is characterised in that：The microcontroller (201) output end is also associated with azimuth-drive motor (207) and pitching motor (208), the azimuth-drive motor (207) and pitching motor (208) output end is connected by wireless transceiver (209) with Omni-directional antenna (210), the Omni-directional antenna (210) Output end be connected by step by step modulating module (211) with signal detector (212), the control of the signal detector (212) End processed is connected with the control terminal of microcontroller (201).
- A kind of 3. automatic tracking system of satellite-signal according to claim 2, it is characterised in that：The step by step modulating mould The output end of block (211) is connected with step trakcing module (3), and the step trakcing module (3) includes filter amplifier (300) With steering controller (301), the output end of the filter amplifier (300) be connected to maximum detection algorithm (302) and The output end of instantaneous value detection algorithm (303), the maximum detection algorithm (302) and instantaneous value detection algorithm (303) passes through Comparator (304) is connected with steering controller (301), the output end and Omni-directional antenna of the steering controller (301) (210) it is connected, the output end of the Omni-directional antenna (210) passes through field strength detection module (305) and filter amplifier (300) It is connected.
- A kind of 4. automatic tracking system of satellite-signal according to claim 1, it is characterised in that：The man-machine interaction mould The output end of block (203) is connected with PC (213), and the PC (213) is internally provided with Labview control modules (214).
- A kind of 5. automatic tracking system of satellite-signal according to claim 1, it is characterised in that：The FPGA controller (100) output end is connected by digital analog converter (106) with wave beam processing module (107).
- A kind of 6. automatic tracking system of satellite-signal according to claim 5, it is characterised in that：The wave beam handles mould Block (107) includes modulator (108), balanced device (109) and upconverter (110), and the modulator (108) receives wave beam letter Number, the output end of the modulator (108) is connected by balanced device (109) with upconverter (110), the upconverter (110) output end is connected with relay-operated controller (111), at the output end and signal of the relay-operated controller (111) Reason unit (101) is connected.
- A kind of 7. automatic tracking system of satellite-signal according to claim 1, it is characterised in that：The man-machine interaction mould Block (203) includes LCDs (215) and control button (216), and the output end of the control button (216) is swept by keyboard Module (217) is retouched with microcontroller (201) to be connected.
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| CN201710974593.5A CN107885233A (en) | 2017-10-19 | 2017-10-19 | A kind of automatic tracking system of satellite-signal |
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| 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 |
| CN113794506A (en) * | 2021-09-07 | 2021-12-14 | 曙光星云信息技术（北京）有限公司 | Automatic tracking satellite communication equipment and working method thereof |
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| 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 |
| 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 |
| CN113794506A (en) * | 2021-09-07 | 2021-12-14 | 曙光星云信息技术（北京）有限公司 | Automatic tracking satellite communication equipment and working method thereof |
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