A method for satellite tracking

Abstract

The application discloses a kind of star tracking methods, comprising the following steps: S100, satellite signal is tracked by linear scanning, and automatic star device is adjusted according to the satellite antenna of provided theory star angle, and visual angle scanning is carried out;S200, satellite signal is tracked twice by cross scanning, and based on the theory star angle of S100 acquisition, visual angle scanning is driven to automatic star device and micro antenna;S300, if satellite signal is tracked in S100 linear scanning process, its corresponding antenna returns starting point;If satellite signal is tracked in S200 cross scanning process, its corresponding antenna keeps signal tracking state;Linear scanning is combined with cross scanning, it is solved that star efficiency is low, linear scanning is more strict to field environment requirement, if it is not straight line, but curve, cross scanning can improve satellite signal tracking efficiency, star time is shortened, fault tolerance is high.

Description

Technical Field

[0001] This invention relates to the field of satellite antenna adjustment technology, specifically a satellite tracking method. Background Technology

[0002] The most common existing satellite tracking methods are linear scanning and conical scanning. These methods use the position information provided by the satellite antenna and the known theoretical satellite tracking angles to adjust the polarization angle and elevation angle of the satellite antenna to correspond to the theoretical values. The satellite signal is tracked by adjusting the azimuth angle.

[0003] Using linear scanning to track signals involves adjusting the satellite antenna's alignment angle based on the alignment information. If the signal is not tracked, the elevation angle is adjusted to continue linear scanning until the signal is tracked. This scanning method has large errors, is time-consuming, and has low efficiency.

[0004] Conical scanning, using the satellite's location information and known theoretical alignment angles, draws "circles" based on the satellite antenna, forming multiple "cones." Signal tracking is performed repeatedly within these circles. When a weak signal is received, the circle's range is continuously reduced, continuing signal tracking until the satellite signal strength is relatively strong. Current signal tracking methods have strict requirements on mechanical performance. If mechanical errors cause the satellite signal tracking range to deviate from a standard circle and instead become an ellipse or irregular shape, it will directly affect the alignment results.

[0005] Therefore, it is essential to design a satellite tracking method with small error and long operating time. Summary of the Invention

[0006] The purpose of this invention is to provide a star tracking method to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A star tracking method includes the following steps:

[0009] S100: Tracks satellite signals through linear scanning, and the automatic satellite alignment device adjusts the satellite antenna according to the provided theory and performs viewing angle scanning;

[0010] S200 performs secondary tracking of satellite signals through cross-scanning, and performs angle scanning of the star angle-driven automatic star alignment device and miniature antenna based on the theoretical data obtained by S100.

[0011] S300, If a satellite signal is tracked during the linear scan of S100, the corresponding antenna maintains the signal tracking state;

[0012] If the S200 detects a satellite signal during cross-scanning, its corresponding antenna will maintain signal tracking.

[0013] According to the above technical solution, the specific method of S100 is as follows:

[0014] S101. Adjust the pitch angle and polarization angle in the theoretical star-aligning angle to make them conform to the theoretical values;

[0015] S102. Based on the adjusted pitch and polarization angles, perform the initial azimuth scan.

[0016] S103. If no satellite signal is tracked during the azimuth scanning process in step S102, the elevation angle is adjusted, that is, the preset angle is extended symmetrically to both sides, and the azimuth angle is scanned again.

[0017] S104. If the satellite signal is still not tracked after extending the elevation angle in step S103, the elevation angle is reduced by a preset angle, and the reduced preset angle is the same as the extended preset angle, and the final azimuth angle scan is performed.

[0018] According to the above technical solution, the specific method of S200 is as follows:

[0019] S201. Based on the theory of star-alignment, the elevation angle and polarization angle are adjusted to make the satellite antenna reach the preset position.

[0020] S202. Mark the linear scanning area, and then, based on the starting point of the satellite antenna scan, perform the first round of azimuth scanning at 45° to the upper left and 45° to the lower right. After the scan is completed, reset the satellite antenna.

[0021] S203. If the satellite signal is not tracked during the scanning process in step S202, the scanning area is rotated 90° based on the first scanning area to present a cross scanning trend. Starting from the satellite antenna scanning point, a second azimuth scan is performed at 45° to the lower left and 45° to the upper right. After the scan is completed, the satellite antenna is reset.

[0022] S204. If the satellite signal is not tracked during the scanning process in step S203, the azimuth angle of the scanning area is increased by 2° based on the elevation angle of the first scanning area for a third scanning. After the scanning is completed, the satellite antenna is reset.

[0023] S205. If the satellite signal is not tracked during the scanning process in step S204, the azimuth angle of the scanning area is reduced by 2° based on the elevation angle of the first scanning area, and the satellite antenna is reset after the scanning is completed.

[0024] S206. If the satellite signal is not tracked during step S205, the elevation angle is adjusted by repeating S204-S205 based on the second scan area, and the fifth and sixth scans are performed.

[0025] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0026] This invention combines linear scanning and cross scanning, solving the problems of low satellite tracking efficiency, the strict requirements of linear scanning on the field environment, and the fact that the scanning range is not a straight line but a curve due to equipment tilt. Cross scanning can improve satellite signal tracking efficiency, shorten satellite tracking time, and increase fault tolerance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an example antenna scanning area of ​​the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] This invention provides a technical solution: a star tracking method, comprising the following steps:

[0030] S100: Tracks satellite signals through linear scanning, and the automatic satellite alignment device adjusts the satellite antenna according to the provided theory and performs viewing angle scanning;

[0031] S200 performs secondary tracking of satellite signals through cross-scanning, and performs angle scanning of the star angle-driven automatic star alignment device and miniature antenna based on the theoretical data obtained by S100.

[0032] S300, If a satellite signal is tracked during the linear scan of S100, the corresponding antenna maintains the signal tracking state;

[0033] If the S200 detects a satellite signal during cross-scanning, its corresponding antenna will maintain signal tracking.

[0034] Specifically, the method of S100 is as follows:

[0035] S101. Adjust the pitch angle and polarization angle in the theoretical star-aligning angle to make them conform to the theoretical values;

[0036] S102. Based on the adjusted pitch and polarization angles, perform the initial azimuth scan.

[0037] S103. If no satellite signal is tracked during the azimuth scanning process in step S102, the elevation angle is adjusted, that is, the preset angle is extended symmetrically to both sides, and the azimuth angle is scanned again.

[0038] S104. If the satellite signal is still not tracked after extending the elevation angle in step S103, the elevation angle is reduced by a preset angle, and the reduced preset angle is the same as the extended preset angle, and the final azimuth angle scan is performed.

[0039] Specifically, the method of S200 is as follows:

[0040] S201. Based on the theory of star-alignment, the elevation angle and polarization angle are adjusted to make the satellite antenna reach the preset position.

[0041] S202. Mark the linear scanning area, and then, based on the starting point of the satellite antenna scan, perform the first round of azimuth scanning at 45° to the upper left and 45° to the lower right. After the scan is completed, reset the satellite antenna.

[0042] S203. If the satellite signal is not tracked during the scanning process in step S202, the scanning area is rotated 90° based on the first scanning area to present a cross scanning trend. Starting from the satellite antenna scanning point, a second azimuth scan is performed at 45° to the lower left and 45° to the upper right. After the scan is completed, the satellite antenna is reset.

[0043] S204. If the satellite signal is not tracked during the scanning process in step S203, the azimuth angle of the scanning area is increased by 2° based on the elevation angle of the first scanning area for a third scanning. After the scanning is completed, the satellite antenna is reset.

[0044] S205. If the satellite signal is not tracked during the scanning process in step S204, the azimuth angle of the scanning area is reduced by 2° based on the elevation angle of the first scanning area, and the satellite antenna is reset after the scanning is completed.

[0045] S206. If the satellite signal is not tracked during step S205, the elevation angle is adjusted by repeating S204-S205 based on the second scan area, and the fifth and sixth scans are performed.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A star tracking method, characterized in that, Includes the following steps: S100: Satellite signals are tracked through linear scanning, and the automatic satellite alignment device adjusts the satellite antenna according to the provided theoretical angle and performs an angle scan. The specific method is as follows: S101. Adjust the pitch angle and polarization angle in the theoretical star-aligning angle to make them conform to the theoretical values; S102. Based on the adjusted pitch and polarization angles, perform the initial azimuth scan. S103. If no satellite signal is tracked during the azimuth scanning process in step S102, the elevation angle is adjusted, that is, the preset angle is extended symmetrically to both sides, and the azimuth angle is scanned again. S104. If the satellite signal is still not tracked after extending the pitch angle in step S103, the pitch angle is reduced by a preset angle, and the reduced preset angle is the same as the extended preset angle, and the final scan of the azimuth angle is performed. S200 performs secondary tracking of satellite signals through cross-scanning, and performs angular scanning of the star angle-driven automatic star alignment device and miniature antenna based on the theoretical data obtained from S100. The specific method is as follows: S201. Based on the theory of star-alignment, the elevation angle and polarization angle are adjusted to make the satellite antenna reach the preset position. S202. Mark the linear scanning area, and then, based on the starting point of the satellite antenna scan, perform the first round of azimuth scanning at 45° to the upper left and 45° to the lower right. After the scan is completed, reset the satellite antenna. S203. If the satellite signal is not tracked during the scanning process in step S202, the scanning area is rotated 90° based on the first scanning area to present a cross scanning trend. Starting from the satellite antenna scanning point, a second azimuth scan is performed at 45° to the lower left and 45° to the upper right. After the scan is completed, the satellite antenna is reset. S204. If the satellite signal is not tracked during the scanning process in step S203, the azimuth angle of the scanning area is increased by 2° based on the elevation angle of the first scanning area for a third scanning. After the scanning is completed, the satellite antenna is reset. S205. If the satellite signal is not tracked during the scanning process in step S204, the azimuth angle of the scanning area is reduced by 2° based on the elevation angle of the first scanning area, and the satellite antenna is reset after the scanning is completed. S206. If the satellite signal is not tracked during step S205, the elevation angle is adjusted by repeating S204-S205 based on the second scan area, and the fifth and sixth scans are performed. S300, If a satellite signal is tracked during the linear scan of S100, the corresponding antenna maintains the signal tracking state; If the S200 detects a satellite signal during cross-scanning, its corresponding antenna will maintain signal tracking.

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