CN104536012B - Method for measuring tracking precision in satellite tracking system - Google Patents
Method for measuring tracking precision in satellite tracking system Download PDFInfo
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- CN104536012B CN104536012B CN201510002053.1A CN201510002053A CN104536012B CN 104536012 B CN104536012 B CN 104536012B CN 201510002053 A CN201510002053 A CN 201510002053A CN 104536012 B CN104536012 B CN 104536012B
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- emitting device
- metope
- laser beam
- beam emitting
- tracking
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a method for measuring tracking precision in a satellite tracking system. The method includes the following steps that a three-shaft swing test bed, the satellite tracking system and a laser emitting device are installed, the position of a wall target is set, static tracking error measurement and dynamic error measurement are carried out, and finally a tracking precision circle is drawn for error standard reaching measurement. According to the method for measuring tracking precision in the satellite tracking system, errors can be calculated through a trigonometric function by simply measuring the laser emitting device, meanwhile, positive and negative values of the errors are judged according to the position and the direction of laser points and do not depend on signals or others, and measured tracking error precision is high.
Description
Technical field
The present invention relates to satellite communication field, the measuring method of tracking accuracy in more particularly, to a kind of minitrack.
Background technology
The measuring method of the tracking accuracy in minitrack is fallen typically by the signal of observation receiving device at present
Fall, calculating tracking accuracy is fallen by signal, its implementation is to control satellite antenna be aligned by tracing control element keeps track
Satellite, the satellite-signal that signal receiver demodulation receives, by detecting the decay of falling of satellite-signal, calculate tracking error,
But by signal fall error in any direction by way of calculation error all show identical signal fall it is impossible to judge believe
The positive negative sense that number error produces, simultaneously during Satellite Tracking signal fall be converted into tracking error mode calculate more multiple
Miscellaneous, wherein it is vulnerable to the impact of the fluctuation of antenna receiving signal, the demodulation accuracy of receiver etc., thus leading to the tracking measuring
Error is inaccurate.
Content of the invention
The purpose of the present invention is that provides tracking accuracy in a kind of minitrack to solve the above problems
Measuring method.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The measuring method of tracking accuracy in a kind of minitrack, comprises the following steps:
A1: described minitrack is arranged on Three-shaft swinging test bed, and laser beam emitting device is fixed on defends
On the pointing direction of star tracking system reception antenna；
A2: arranging perpendicular to described minitrack reception antenna at a distance of the position of l with described laser beam emitting device
Pointing direction metope, and the laser spots that described laser beam emitting device is projected on described metope are set to central point o；
A3: if carrying out static tracking error measurement, skipping to step a4, if carrying out dynamic tracking error, skipping to step
Rapid a5；
A4: static tracking error measures, and it comprises the following steps:
B1: make described Three-shaft swinging test bed static, drive the work of described laser beam emitting device, by matched upper
Position machine controls the described antenna of rotation, 5 ° every time of rotational angle；
B2: before and after the described antenna of measurement rotates, laser spots displacement and described central point o between on described metope
A1, a2；
B3: calculate static tracking error；
α=arctg (a/l), △ α=α 1- α 2.
A5: dynamic tracking error measures, and comprises the following steps:
C1: drive described Three-shaft swinging test bed and described laser beam emitting device work；
C2: when the described minitrack of measurement follows described Three-shaft swinging test bed rotation, laser spots are in described metope
Above displacement a1 and described central point o between, a2；
C3: measure described laser beam emitting device and the distance between described metope change △ l and described laser beam emitting device
Distance change △ a in the plane parallel with described metope；
C4: calculate dynamic tracking error；
Its computing formula is: α=arctg [(a+ △ a)/(l+ △ l)], △ α=α 1- α 2.
A6: tracking accuracy circle is drawn for the center of circle with central point o.
Its computing formula is: precision radius of circle r=tg △ α × l.
A7: drive Three-shaft swinging test bed work, and observe projection on described metope for the described laser beam emitting device
The moving range of laser spots, if it is in drawn tracking accuracy circle, shows that the tracking accuracy of minitrack is full
Foot requires；If it is in outside drawn tracking accuracy circle, show that the tracking accuracy of minitrack can not meet requirement.
Specifically, described laser beam emitting device is laser pen, and described laser pen is arranged on the pointing direction of described antenna
On center.
The beneficial effects of the present invention is:
In minitrack of the present invention, the measuring method of tracking accuracy is simply measured by laser beam emitting device,
Calculation error is got final product by trigonometric function, passes through the locality error in judgement positive and negative values of laser spots simultaneously, do not rely on signal
Or other, the tracking error high precision measured.
Brief description
Fig. 1 is the structure chart of the measuring method of tracking accuracy in minitrack of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings:
As shown in figure 1, in a kind of minitrack tracking accuracy measuring method, including consisting of part:
1 is three-axis swinging laboratory table；
2 is minitrack；
3 is the laser beam emitting device being fixed on antenna pointing direction；
4 is the target receiving laser beam emitting device, such as metope.
The measuring method of tracking accuracy in a kind of minitrack, comprises the following steps:
Minitrack 2 is arranged on Three-shaft swinging test bed 1, and laser beam emitting device 3 is fixed on reception sky
On the pointing direction of line, laser beam emitting device 3 is laser pen, and laser pen is arranged on the center of antenna, is sending out with laser
Injection device 3 arranges the metope 4 of the pointing direction perpendicular to reception antenna at a distance of the position of l, and by laser beam emitting device 3 in metope
On 4, the laser spots of projection are set to central point o；
When carrying out static tracking error measurement, make Three-shaft swinging test bed 1 static, drive laser method and device work, turn
Dynamic antenna, 5 ° every time of rotational angle, before and after measurement antenna rotates, laser spots displacement and central point o between on metope 4
A1, a2, according to formula α=arctg (a/l), △ α=α 1- α 2, calculate static tracking error；
When carrying out dynamic tracking error measurement, Three-shaft swinging test bed 1 is driven to work with laser beam emitting device 3, measurement is defended
When star tracking system 2 follows Three-shaft swinging test bed 1 rotation, laser spots displacement and central point o between on metope 4
A1, a2, Laser Measurement discharger 3 is with the distance between metope 4 change △ l and laser beam emitting device 3 parallel with metope 4
Distance change △ a in plane, according to formula α=arctg [(a+ △ a)/(l+ △ l)], △ α=α 1- α 2, calculates dynamic tracking
Error；
Finally tracking accuracy circle, precision radius of circle r=tg △ α × l are drawn for the center of circle with central point o.
When being tracked the confirmation of precision target test, Three-shaft swinging test bed 1 motion is got up, sees the movement of laser spots
Apart from a whether within precision circle, that is, know whether the tracking accuracy of this minitrack 2 meets requirement.
Technical scheme is not limited to the restriction of above-mentioned specific embodiment, and every technology according to the present invention scheme is done
The technology deformation going out, each falls within protection scope of the present invention.
Claims (2)
1. in a kind of minitrack tracking accuracy measuring method it is characterised in that: comprise the following steps:
A1: described minitrack is arranged on Three-shaft swinging test bed, and by laser beam emitting device be fixed on satellite with
On the pointing direction of track system reception antenna；
A2: the finger perpendicular to described minitrack reception antenna is being set at a distance of the position of l with described laser beam emitting device
To the metope in direction, and the laser spots that described laser beam emitting device is projected on described metope are set to central point o；
A3: if carrying out static tracking error measurement, skipping to step a4, if carrying out dynamic tracking error, skipping to step a5；
A4: static tracking error measures, and it comprises the following steps:
B1: make described Three-shaft swinging test bed static, drive described laser beam emitting device work, by matched host computer
Control and rotate described antenna, 5 ° every time of rotational angle；
B2: before and after the described antenna of measurement rotates, laser spots displacement a1 and described central point o between on described metope,
a2；
B3: calculate static tracking error；
Its computing formula is: α=arctg (a/l), △ α=α 1- α 2.
In formula: a is laser spots displacement and described central point o between on described metope, the adjacent shifting rotating twice
Dynamic distance respectively a1, a2, l is the distance between metope and laser beam emitting device, and α 1 is the angle that displacement is during a1, α 2
It is angle during a2 for displacement；
A5: dynamic tracking error measures, and comprises the following steps:
C1: drive described Three-shaft swinging test bed and described laser beam emitting device work；
C2: when measuring described minitrack and following described Three-shaft swinging test bed and rotate, laser spots on described metope with
Displacement a1 between described central point o, a2；
C3: measure the distance between described laser beam emitting device and described metope change △ l and described laser beam emitting device with
Distance change △ a in the parallel plane of described metope；
C4: calculate dynamic tracking error；
Its computing formula is: α=arctg [(a+ △ a)/(l+ △ l)], △ α=α 1- α 2；
In formula: a is laser spots displacement and described central point o between on described metope, the adjacent shifting rotating twice
Dynamic distance respectively a1, a2, l is the distance between metope and laser beam emitting device, △ l be described laser beam emitting device with described
The distance between metope changes, and △ a is distance change in the plane parallel with described metope for the described laser beam emitting device, α 1
It is angle during a1 for displacement, α 2 is angle during a2 for displacement；
A6: tracking accuracy circle is drawn for the center of circle with central point o；
Its computing formula is: precision radius of circle r=tg △ α × l.
In formula: △ α is that the angle in angle difference or step a5 in step a4 is poor；
A7: drive Three-shaft swinging test bed work, and observe the laser of projection on described metope for the described laser beam emitting device
The moving range of point, if it is in drawn tracking accuracy circle, shows that the tracking accuracy of minitrack meets and wants
Ask；If it is in outside drawn tracking accuracy circle, show that the tracking accuracy of minitrack can not meet requirement.
2. in minitrack according to claim 1 tracking accuracy measuring method it is characterised in that: described laser
Discharger is laser pen, and described laser pen is arranged on the center on the pointing direction of described antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510002053.1A CN104536012B (en) | 2015-01-04 | 2015-01-04 | Method for measuring tracking precision in satellite tracking system |
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| CN104536012B true CN104536012B (en) | 2017-01-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107728648A (en) * | 2017-11-03 | 2018-02-23 | 南京长峰航天电子科技有限公司 | A kind of detection method of servo turntable tracking accuracy |
| CN110082792A (en) * | 2019-05-21 | 2019-08-02 | 中信海洋（舟山）卫星通信有限公司 | Inexpensive Shipborne satellite antenna waves test platform |
| CN114389680B (en) * | 2021-12-14 | 2023-06-20 | 北京遥感设备研究所 | Method and system for calibrating pointing precision of low-rail satellite communication terminal |
| CN114236251A (en) * | 2021-12-16 | 2022-03-25 | 浙江中星光电子科技有限公司 | Satellite antenna tracking precision testing method |
Citations (4)
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|---|---|---|---|---|
| GB2173643B (en) * | 1985-02-25 | 1988-07-13 | Dx Antenna | Device and method for automatically tracking satellite by receiving antenna |
| CN1614815A (en) * | 2004-12-14 | 2005-05-11 | 庞江帆 | Signal levelling detecting and dynamic tracking satellite antenna |
| CN101334460A (en) * | 2007-06-26 | 2008-12-31 | 航天恒星科技股份有限公司产业园分公司 | Satellite communications system antenna tracking accuracy checking method and its device |
| CN202076418U (en) * | 2011-06-02 | 2011-12-14 | 成都盟升科技有限公司 | Double-shaft satellite tracking system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101193833B1 (en) * | 2012-06-29 | 2012-10-31 | 류동영 | Satellite tracking system and control method thereof |
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2015
- 2015-01-04 CN CN201510002053.1A patent/CN104536012B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173643B (en) * | 1985-02-25 | 1988-07-13 | Dx Antenna | Device and method for automatically tracking satellite by receiving antenna |
| CN1614815A (en) * | 2004-12-14 | 2005-05-11 | 庞江帆 | Signal levelling detecting and dynamic tracking satellite antenna |
| CN101334460A (en) * | 2007-06-26 | 2008-12-31 | 航天恒星科技股份有限公司产业园分公司 | Satellite communications system antenna tracking accuracy checking method and its device |
| CN202076418U (en) * | 2011-06-02 | 2011-12-14 | 成都盟升科技有限公司 | Double-shaft satellite tracking system |
Non-Patent Citations (2)
| Title |
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| 动中通卫星通信系统天线跟踪精度检测方法;程鹏;《今日科苑》;20101231(第15期);第142页 * |
| 基于"动中通"移动卫星通信车的天线系统的检测分析;许军等;《电脑与信息技术》;20090630;第17卷(第3期);第50－53页 * |
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