A method, system and electronic device for calibrating a satellite antenna with reference to the sun position

Abstract

The present invention relates to the field of technical satellite antenna calibration, and particularly to a method, system and electronic device for calibrating a satellite antenna with reference to the sun position. The method includes: First, when the satellite antenna to be calibrated is aligned with the sun, calculate the first azimuth angle and the first elevation angle of the satellite antenna to be calibrated, and collect the second azimuth angle and the second elevation angle of the satellite antenna to be calibrated through the acquisition software corresponding to the satellite antenna to be calibrated; Then, determine whether the difference between the first azimuth angle and the second azimuth angle exceeds the preset azimuth angle difference threshold, and determine whether the difference between the first elevation angle and the first elevation angle exceeds the preset elevation angle difference threshold; Finally, when at least one of the first judgment result and the second judgment result is yes, adjust the initial zero position of the satellite antenna to be calibrated until both the first judgment result and the second judgment result are yes, and the calibration is completed. It can calibrate the satellite antenna to be calibrated quickly and accurately, and is not restricted by geographical conditions.

Description

Background Art

[0002] In recent years, with the continuous development of aerospace technology and the increasing scale of the aerospace industry, the commercial aerospace industry represented by commercial launch vehicles, low-orbit Internet constellations, and commercial satellites has shown a new development trend. Especially with the support of national policies, private commercial aerospace has sprung up like mushrooms after rain. The measurement, control, tracking, and data reception of low-orbit satellites all require the support of satellite tracking antennas. In practical applications, the accuracy and timeliness of satellite antenna tracking satellites directly determine the operation quality of satellites. Therefore, it is particularly important to calibrate the true north zero position of the satellite antenna to ensure that the satellite antenna accurately tracks satellites such as low-orbit satellites.

[0003] Low-orbit satellites pass over the antenna area an average of four times a day, and each pass lasts 10 minutes. If low-orbit satellites are used as signal sources, calibration will take a lot of time. Moreover, the calibration time is short, with each pass lasting about 10 minutes, making it difficult to ensure accuracy.

[0004] If the method of setting up a signal source is used, the distance and angle to the satellite antenna are relatively high, generally required to be at least 1 km away, the elevation angle of the satellite antenna to the signal source should be greater than 3 degrees, and a stable power supply is required. Therefore, the setting point depends on the conditions and restrictions of the location. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method, system and electronic equipment for calibrating a satellite antenna with reference to the position of the sun in view of the deficiencies in the prior art.

[0006] The technical solution of a method for calibrating a satellite antenna with reference to the sun position of the present invention is as follows:

[0007] S1. When the satellite antenna to be calibrated is aligned with the sun, a first azimuth angle and a first elevation angle of the satellite antenna to be calibrated are calculated, and a second azimuth angle and a second elevation angle of the satellite antenna to be calibrated are collected by collection software corresponding to the satellite antenna to be calibrated;

[0008] S2. Determine whether the difference between the first azimuth angle and the second azimuth angle exceeds a preset azimuth angle difference threshold, and obtain a first determination result; and determine whether the difference between the first elevation angle and the first elevation angle exceeds a preset elevation angle difference threshold, and obtain a second determination result;

[0009] S3. When at least one of the first judgment result and the second judgment result is yes, adjust the initial zero position of the satellite antenna to be calibrated, and return to execute S1 until the first judgment result and the second judgment result are both yes, thereby completing the calibration of the satellite antenna to be calibrated.

[0010] The beneficial effects of a method for calibrating a satellite antenna with reference to the sun position of the present invention are as follows:

[0011] The sun, as a stable signal source, is continuously visible in an area for at least more than 10 hours, with stable signals. When the satellite antenna to be calibrated is aligned with the sun, the elevation angle meets the requirements and the position can be accurately determined. Therefore, using the sun as a signal source can simply, conveniently, quickly, and accurately calibrate the satellite antenna to be calibrated, and is not restricted by geographical conditions.

[0012] Based on the above solution, a method for calibrating a satellite antenna with reference to the sun position of the present invention can be further improved as follows.

[0013] Further, the process of determining that the satellite antenna to be calibrated is aligned with the sun includes:

[0014] Adjust the orientation of the satellite antenna to be calibrated until the maximum X-band signal of the sun is received by the satellite antenna to be calibrated, so as to align the satellite antenna to be calibrated with the sun.

[0015] Further, it also includes:

[0016] Determine the magnitude of the X-band signal of the sun received by the satellite antenna to be calibrated through a spectrum analyzer.

[0017] Further, it also includes: using the calibrated satellite antenna to track the satellite.

[0018] The technical solution of a system for calibrating a satellite antenna with reference to the sun position of the present invention is as follows:

[0019] It includes a calculation and acquisition module, a judgment module, and an adjustment module;

[0020] The calculation and acquisition module is used for: when the satellite antenna to be calibrated is aligned with the sun, calculating the first azimuth angle and the first elevation angle of the satellite antenna to be calibrated, and acquiring the second azimuth angle and the second elevation angle of the satellite antenna to be calibrated through the acquisition software corresponding to the satellite antenna to be calibrated;

[0021] The judgment module is used for: judging whether the difference between the first azimuth angle and the second azimuth angle exceeds a preset azimuth angle difference threshold to obtain a first judgment result, and judging whether the difference between the first elevation angle and the second elevation angle exceeds a preset elevation angle difference threshold to obtain a second judgment result;

[0022] The adjustment module is used for: when at least one of the first judgment result and the second judgment result is yes, adjusting the initial zero position of the satellite antenna to be calibrated, and repeatedly calling the calculation and acquisition module and the judgment module until both the first judgment result and the second judgment result are yes, and completing the calibration of the satellite antenna to be calibrated.

[0023] The beneficial effects of a system for calibrating a satellite antenna with reference to the sun position according to the present invention are as follows:

[0024] The sun, as a stable signal source, is continuously visible in a region for at least more than 10 hours. The signal is stable. When the elevation angle of the satellite antenna to be calibrated when it is aligned with the sun meets the requirements, and the position can be accurately determined. Therefore, using the sun as the signal source can simply, conveniently, quickly and accurately calibrate the satellite antenna to be calibrated, and is not restricted by geographical conditions.

[0025] On the basis of the above solution, a system for calibrating a satellite antenna with reference to the sun position according to the present invention can also be improved as follows.

[0026] Further, it further includes a first determination module, and the first determination module is used for:

[0027] Adjust the orientation of the satellite antenna to be calibrated until the maximum X-band signal of the sun received by the satellite antenna to be calibrated is obtained.

[0028] Further, it further includes a second determination module, and the second determination module is used for:

[0029] Determine the magnitude of the X-band signal of the sun received by the satellite antenna to be calibrated through a spectrum analyzer.

[0030] Further, it further includes a control and tracking module, and the control and tracking module is used for: using the calibrated satellite antenna to be calibrated to track the satellite.

[0031] A storage medium of the present invention stores instructions, and when a computer reads the instructions, the computer executes a method for calibrating a satellite antenna with reference to the sun position as described in any one of the above.

[0032] An electronic device of the present invention includes a processor and the above storage medium, and the processor executes the instructions in the storage medium. Description of the Drawings

[0033] Figure 1 It is a schematic flowchart of a method for calibrating a satellite antenna with reference to the sun position according to an embodiment of the present invention;

[0034] Figure 2 It is a schematic diagram of the azimuth angle and the elevation angle;

[0035] Figure 3 It is a schematic diagram of the principle of calibrating the true north zero position of the antenna by using the sun as the signal source;

[0036] Figure 4The present invention is a schematic diagram of the structure of a system for calibrating a satellite antenna with reference to the position of the sun according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] like Figure 1 As shown, a method for calibrating a satellite antenna with reference to the sun position according to an embodiment of the present invention includes the following steps:

[0038] S1. When the satellite antenna to be calibrated is aligned with the sun, a first azimuth angle and a first elevation angle of the satellite antenna to be calibrated are calculated, and a second azimuth angle and a second elevation angle of the satellite antenna to be calibrated are collected by collection software corresponding to the satellite antenna to be calibrated;

[0039] The acquisition software corresponding to the satellite antenna to be calibrated is an acquisition program provided by the satellite to which the satellite antenna to be calibrated belongs.

[0040] Among them, Figure 2 As shown, the azimuth and elevation angles are explained as follows:

[0041] 1) Azimuth: refers to the rotation of the satellite antenna from 0° to 360° in the horizontal plane. Taking the due north direction (approximately the magnetic south pole) as the standard, the direction of the satellite antenna is adjusted to an angle to the east or west. The angle between this angle and the due north direction is the so-called azimuth. When the satellite antenna points to the due north, the azimuth of the satellite antenna is 0°. When the satellite antenna rotates 30° to the east, the azimuth of the satellite antenna is 30°. When the satellite antenna rotates to 45° west of due south, the azimuth of the antenna can be expressed as 225°.

[0042] 2) Definition of elevation angle: The elevation angle refers to the angle between the direction in which the satellite antenna points to the sky and the horizon;

[0043] 3) True North Zero Position: The true north direction of the satellite antenna (approximately the geomagnetic South Pole) is the standard zero point, which is the true north zero position of the satellite antenna azimuth counting;

[0044] Based on the above definition, when the satellite antenna to be calibrated is aimed at the sun, the first azimuth angle and the first elevation angle of the satellite antenna to be calibrated are calculated. The specific process is as follows:

[0045] S2, determining whether the difference between the first azimuth angle and the second azimuth angle exceeds a preset azimuth angle difference threshold, obtaining a first determination result, and determining whether the difference between the first elevation angle and the second elevation angle exceeds a preset elevation angle difference threshold, obtaining a second determination result;

[0046] Among them, the preset azimuth angle difference threshold and the preset elevation angle difference threshold can be set and adjusted according to actual conditions.

[0047] S3. When at least one of the first judgment result and the second judgment result is yes, adjust the initial zero position of the satellite antenna to be calibrated in the acquisition software, and return to execute S1 until both the first judgment result and the second judgment result are yes, completing the calibration of the satellite antenna to be calibrated. Completing the calibration of the satellite antenna to be calibrated can be specifically understood as:

[0048] When the satellite antenna to be calibrated is aligned with the sun, the difference between the calculated first azimuth angle and the second azimuth angle does not exceed the preset azimuth difference threshold, and the difference between the first elevation angle and the first elevation angle does not exceed the preset elevation difference threshold. At this time, it means that the accuracy of the second azimuth angle and the second elevation angle collected by the acquisition software is high, which is also equivalent to calibrating the acquisition software. Among them, the initial zero position is generally the due north direction.

[0049] The sun, as a stable signal source, is continuously visible in an area for at least more than 10 hours, the signal is stable, the elevation angle when the satellite antenna to be calibrated is aligned with the sun meets the requirements, and the position can be accurately determined. Therefore, using the sun as a signal source can simply, conveniently, quickly and accurately calibrate the satellite antenna to be calibrated, and is not restricted by geographical conditions.

[0050] Optionally, in the above technical solution, the process of determining that the satellite antenna to be calibrated is aligned with the sun includes:

[0051] S01. Adjust the orientation of the satellite antenna to be calibrated until the satellite antenna to be calibrated receives the maximum X-band signal of the sun. At this time, it means that the satellite antenna to be calibrated has been aligned with the sun.

[0052] Optionally, in the above technical solution, it further includes:

[0053] Determine the magnitude of the X-band signal of the sun received by the satellite antenna to be calibrated through a spectrum analyzer. Specifically:

[0054] The sun is a strong radiation source with rich spectrum and sufficient flux, and its electromagnetic wavelength is 1 mm to 20 m. Therefore, when the sun is used as a wide-band radio frequency signal source, as long as the antenna system with the working frequency in this frequency band can use the sun as a signal source to track the antenna system to determine whether the antenna system tracking is accurate. The sun as a signal source in the X band can be ideally considered as a low-earth orbit satellite with a low-speed transit, and the sun can be used as a signal source to calibrate the tracking antenna.

[0055] The method of calibrating the true north zero position of the antenna with reference to the sun position uses the sun as a radio frequency noise source to receive the X-band signal of the sun. During the test, considering that both the X-band signal of the sun and the cold air signal are relatively weak, in order to avoid the influence of the spectrum analyzer noise, an LNA (low noise amplifier) is usually added in front of the spectrum analyzer before measurement. The principle block diagram of calibrating the true north zero position of the antenna using the sun as a signal source is as shown in Figure 3 shown. Specifically:

[0056] Figure 3 In it, LNA, that is, a low noise amplifier, is an amplifier with a very low noise figure. It is generally used as a high-frequency or intermediate-frequency pre-signal amplifier for various radio receivers. Figure 3 The down-conversion in

[0057] refers to a down-converter: a device that converts a higher frequency into a lower frequency according to certain rules.

[0058] Optionally, in the above technical solution, it further includes:

[0059] S4. Use the satellite antenna to be calibrated that has completed the calibration to track the satellite.

[0060] The following uses an embodiment to illustrate a method for calibrating a satellite antenna with reference to the sun position of the present application:

[0061] When adjusting the true north zero position of the satellite antenna, first let the antenna roughly point to the true north direction, and finely adjust the azimuth screw rod with reference to the azimuth angle displayed by the compass and when the antenna tracks the sun, so that the azimuth angle displayed by the antenna is infinitely close to the theoretical azimuth angle of the sun, then it can be considered that the true north zero position is accurately adjusted, and then use the satellite antenna to automatically track the passing satellite to verify whether the azimuth angle displayed by the antenna is consistent with the theoretical azimuth angle of the satellite.

[0062] As an auto-tracking antenna for the tracking, telemetry, command and data reception of low-earth orbit satellites, the azimuth and elevation angles of the antenna during tracking have relatively high requirements. Once the north-zero calibration in the due north direction is not precise enough, when the antenna is tracking, the angle deviation will cause inaccurate antenna tracking and affect signal reception. The current method for calibrating the north-zero of the antenna is to use a compass to measure the north-zero of the antenna position, and then calibrate the antenna. After calibration, the antenna receives the satellite signals passing by for verification, to check whether the azimuth and elevation angles displayed by the antenna when tracking the satellite are consistent with the azimuth and elevation angles of the satellite passing by calculated theoretically, and whether the error is within the allowable range. If the error is large, it is necessary to measure again with the compass, adjust the north-zero of the antenna, and wait for the satellite to pass by to verify again. This method requires waiting for the satellite to pass by for verification. Each time the satellite passes by, it is only about 10 minutes. The calibration is difficult. If the calibration is not successful once, it is necessary to wait for the satellite to pass by, wasting time.

[0063] The sun is a strong radiation source with rich spectrum and sufficient flux, and its electromagnetic wavelength is 1mm - 20m. Therefore, when using the sun as a wide-band RF signal source, as long as the working frequency of the antenna system is within this frequency band, the sun can be used as a signal source for the tracking of the antenna system to determine whether the antenna system tracking is accurate. The sun as a signal source in the X band can be considered an ideal low-earth orbit satellite with a low-speed transit, and the sun can be used as a signal source to calibrate the tracking antenna.

[0064] In practical applications, the values of the azimuth and elevation angles of the sun can be calculated according to software, and the azimuth and elevation angles of the low-earth orbit satellite in the transit area can also be calculated according to parameters. Therefore, when the antenna is tracking the sun or the passing satellite, if the displayed azimuth and elevation angles are consistent with the calculated theoretical values, it indicates that the north-zero of the antenna is relatively accurate and the antenna tracking is relatively accurate.

[0065] First, use the tracking antenna to receive the X-band signal value of the sun to determine whether the azimuth and elevation angles of the antenna are consistent with the azimuth and elevation angles measured by the software. If they are not consistent, recalibrate the north-zero of the antenna until the azimuth and elevation angles displayed by the antenna when pointing at the sun are consistent with the theoretical azimuth and elevation angles of the sun. Then use the antenna to track the passing satellite to verify the antenna tracking of the satellite.

[0066] When calibrating the true north zero position of the antenna, it is necessary to ensure that the antenna is aligned with the sun. The relative position of the sun relative to a certain coordinate point on the earth's surface at a certain moment can be obtained through the geodetic coordinates where the antenna is located and the astronomical ephemeris data; it is also possible to ensure that the antenna is aligned with the sun by observing the projection of the antenna feeder on the antenna surface with the naked eye; for self-tracking devices, the antenna can be aligned with the sun in a self-tracking manner. Check whether the azimuth and elevation angles displayed by the antenna servo software at this time are the same as the azimuth and elevation angles of the relative position of the sun relative to the coordinate point of the antenna's location on the earth's surface at this moment. If they are different, it is necessary to adjust the true north zero position of the antenna, that is, the closer the 0 position of the true north is to the theoretical value, the better.

[0067] The antenna azimuth angle is zero in the due north direction, positive from north to east to south, and negative from north to west to south. For example, if the sun is due east, the azimuth angle is +90°, when it is due southeast, the azimuth is +135°, when it is due west, the azimuth angle is 270°, and when it is due north, it is 0°. The solar azimuth angle is a geoscience term with a rigorous definition. The so-called azimuth angle starts from the due north direction of the target object (the same as the north direction of the central meridian within the same geographical division / zone), that is, 0 degrees. Its value range is from 0 to 360 degrees, and the calculation rotation method is: with the target object as the axis, starting from the north direction of the target object, rotating clockwise for one week, the azimuth angle gradually increases to 360°. Therefore, the solar azimuth angle is generally measured in a clockwise direction with the north direction of the target object as the starting direction and the incident direction of sunlight as the ending direction.

[0068] Solar elevation angle: The solar altitude, or altitude angle, that is, the solar altitude angle is the angle between the line connecting the observer's location and the center of the sun and the ground plane. The zenith angle is the complementary angle of the elevation angle, that is, (90° – gS). When the solar elevation angle is 90°, that is, the sun is at the zenith, so the solar zenith angle is 0.

[0069] 1) The calculation formula for the solar elevation angle:

[0070] sinhs = sinψ·sinδ + cosψ·cosδ·cosΩ

[0071] In the formula, hs represents the solar elevation angle, ψ represents the geographical latitude, δ represents the declination, and Ω represents the hour angle

[0072] 2) The calculation formula for the solar azimuth angle As:

[0073] COSAs = sinhs·sinψ - sinδ / (coshs·cosψ)

[0074] As represents the solar azimuth angle.

[0075] The technical effects of a method for calibrating a satellite antenna with reference to the sun position of the present invention are as follows:

[0076] Calibrate the true north zero position of the antenna using the method of calibrating the true north zero position of the antenna with reference to the sun position. It is not restricted by the satellite transit time and number of times. Calibration can be carried out during the time when the sun is continuously visible throughout the day. When the satellite transits, track the satellite for verification, which saves time, ensures accuracy, and improves efficiency.

[0077] If a compass is used to find the north to determine the true north zero position of the antenna, track the satellite for verification when the satellite transits. Once it is inaccurate, readjustment and re-verification are required, wasting time. The average number of satellite transits over the area where the antenna is located per day for low-earth orbit satellites is only 4 times, and each transit time is 10 minutes. If the satellite is used as the signal source, calibration takes up more time, and the calibration time is short for each 10-minute transit, making it difficult to ensure accuracy.

[0078] This method mainly makes clever use of the sun as the signal source to calibrate the true north zero position of the antenna. The following points need to be noted during the operation process:

[0079] 1) The G / T value of the satellite antenna to be calibrated should be greater than 16 dB.

[0080] 2) The beam width of the satellite antenna to be calibrated meets the limiting conditions of beam correction.

[0081] 3) The attenuation settings of measuring instruments such as spectrum analyzers and cables should be minimized as much as possible to minimize the influence of the measuring instruments on the noise. The resolution bandwidth of the spectrum analyzer should be as small as possible to provide relatively stable test readings.

[0082] 4) The measurement point should be as close as possible to the LNA output port, and it is required that the insertion loss introduced by the measurement cable is as small as possible to reduce the two kinds of noise temperature measurement errors caused by the cable and result in system test errors.

[0083] 5) The elevation angle of the satellite antenna to be calibrated should not be too low or too high. If it is too low, it is easy to introduce ground thermal noise when measuring the cold air noise temperature. If it is too high, it will lead to the introduction of solar noise temperature. The minimum elevation angle of the antenna should be above 10°, and generally it is appropriate to take 40° - 70°.

[0084] 6) When measuring the solar noise temperature, it is necessary to ensure that the satellite antenna to be calibrated is aligned with the sun. The relative position of the sun relative to a certain coordinate point on the earth's surface at a certain moment can be obtained through the geodetic coordinates of the antenna and astronomical ephemeris data; it can also be ensured that the antenna is aligned with the sun by visually observing the projection of the antenna feed source on the antenna surface; for self-tracking equipment, the antenna can be aligned with the sun in a self-tracking manner.

[0085] 7) The flux density of solar radiation observed by the observatory on the same day can be obtained.

[0086] 8) The receiver should have a large enough dynamic range to ensure that the receiver is not saturated when the antenna is aligned with the sun.

[0087] 9) The system and instruments to be measured need to be preheated for more than 2 hours.

[0088] 10) Pay attention to the influence of weather on the measurement results. The ideal measurement conditions are sunny days, cloudless, no wind or gentle breeze.

[0089] In the above embodiments, although the steps are numbered as S1, S2, etc., they are only specific embodiments given in this application. Those skilled in the art can adjust the execution order of S1, S2, etc. according to the actual situation, which is also within the protection scope of the present invention. It can be understood that in some embodiments, it may include some or all of the above embodiments.

[0090] As Figure 4 shown, a system 200 for calibrating a satellite antenna with reference to the sun position according to an embodiment of the present invention includes a calculation and acquisition module 210, a judgment module 220, and an adjustment module 230;

[0091] The calculation and acquisition module 210 is configured to: when the satellite antenna to be calibrated is aligned with the sun, calculate the first azimuth angle and the first elevation angle of the satellite antenna to be calibrated, and collect the second azimuth angle and the second elevation angle of the satellite antenna to be calibrated through the acquisition software corresponding to the satellite antenna to be calibrated;

[0092] The judgment module 220 is configured to: judge whether the difference between the first azimuth angle and the second azimuth angle exceeds a preset azimuth angle difference threshold to obtain a first judgment result, and judge whether the difference between the first elevation angle and the second elevation angle exceeds a preset elevation angle difference threshold to obtain a second judgment result;

[0093] The adjustment module 230 is configured to: when at least one of the first judgment result and the second judgment result is yes, adjust the initial zero position of the satellite antenna to be calibrated, and repeatedly call the calculation and acquisition module 210 and the judgment module 220 until both the first judgment result and the second judgment result are yes, and complete the calibration of the satellite antenna to be calibrated.

[0094] The sun, as a stable signal source, is continuously visible in an area for at least more than 10 hours, with stable signals. When the satellite antenna to be calibrated is aligned with the sun, the elevation angle meets the requirements, and the position can be accurately determined. Therefore, using the sun as a signal source can simply, conveniently, quickly and accurately calibrate the satellite antenna to be calibrated, and is not restricted by geographical conditions.

[0095] Optionally, in the above technical solution, it further includes a first determination module, and the first determination module is configured to:

[0096] Adjust the orientation of the satellite antenna to be calibrated until the maximum X-band signal of the sun is received by the satellite antenna to be calibrated.

[0097] Optionally, in the above technical solution, it further includes a second determination module, and the second determination module is configured to:

[0098] Determine the magnitude of the X-band signal received by the satellite antenna to be calibrated from the sun through a spectrum analyzer.

[0099] Optionally, in the above technical solution, it further includes a control and tracking module, and the control and tracking module is configured to: Use the satellite antenna to be calibrated that has completed calibration to track the satellite.

[0100] For the parameters and the steps for each unit module in the above-described system 200 for calibrating a satellite antenna with reference to the sun position of the present invention to implement corresponding functions, reference may be made to the parameters and steps in the embodiments of the method for calibrating a satellite antenna with reference to the sun position in the foregoing text, and details are not described herein again.

[0101] A storage medium according to an embodiment of the present invention stores instructions, and when a computer reads the instructions, it causes the computer to execute the method for calibrating a satellite antenna with reference to the sun position according to any one of the above.

[0102] An electronic device according to an embodiment of the present invention includes a processor and the above storage medium, and the processor executes the instructions in the storage medium. Among them, the electronic device can be a computer, a mobile phone, etc.

[0103] Those skilled in the art know that the present invention can be implemented as a system, a method, or a computer program product.

[0104] Therefore, the present disclosure can be specifically implemented in the following forms, that is: it can be completely hardware, can be completely software (including firmware, resident software, microcode, etc.), or can be a combination of hardware and software, which is generally referred to as "circuit", "module" or "system" in this article. In addition, in some embodiments, the present invention can also be implemented in the form of a computer program product in one or more computer-readable media, and the computer-readable media contains computer-readable program code.

[0105] Any combination of one or more computer-readable media may be employed. The computer-readable media may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example - but not limited to - an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present document, a computer-readable storage medium may be any tangible medium that contains or stores a program which can be used by or in connection with an instruction execution system, apparatus, or device.

[0106] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for calibrating a satellite antenna with reference to the sun position, characterized in that, Including: S1. When the satellite antenna to be calibrated is aligned with the sun, calculate the first azimuth angle and the first elevation angle of the satellite antenna to be calibrated, and collect the second azimuth angle and the second elevation angle of the satellite antenna to be calibrated through the acquisition software corresponding to the satellite antenna to be calibrated; S2. Judge whether the difference between the first azimuth angle and the second azimuth angle exceeds a preset azimuth angle difference threshold to obtain a first judgment result, and judge whether the difference between the first elevation angle and the second elevation angle exceeds a preset elevation angle difference threshold to obtain a second judgment result; S3. When at least one of the first judgment result and the second judgment result is yes, adjust the initial zero position of the satellite antenna to be calibrated in the acquisition software, and return to execute S1 until both the first judgment result and the second judgment result are no, and complete the calibration of the satellite antenna to be calibrated, where the initial zero position is the due north direction; The process of determining that the satellite antenna to be calibrated is aligned with the sun includes: Adjust the orientation of the satellite antenna to be calibrated until the satellite antenna to be calibrated receives the maximum X-band signal of the sun.

2. The method for calibrating a satellite antenna with reference to the sun position according to claim 1, wherein Also including: Determine the magnitude of the X-band signal of the sun received by the satellite antenna to be calibrated through a spectrum analyzer.

3. A method for calibrating a satellite antenna according to the reference solar position as claimed in any one of claims 1 to 2, characterized in that Also including: Use the calibrated satellite antenna to track the satellite.

4. A system for calibrating a satellite antenna with reference to the sun position, characterized in that, Including a calculation and acquisition module, a judgment module, and an adjustment module; The calculation and acquisition module is used for: when the satellite antenna to be calibrated is aligned with the sun, calculate the first azimuth angle and the first elevation angle of the satellite antenna to be calibrated, and collect the second azimuth angle and the second elevation angle of the satellite antenna to be calibrated through the acquisition software corresponding to the satellite antenna to be calibrated; The judgment module is used for: judging whether the difference between the first azimuth angle and the second azimuth angle exceeds a preset azimuth angle difference threshold to obtain a first judgment result, and judging whether the difference between the first elevation angle and the second elevation angle exceeds a preset elevation angle difference threshold to obtain a second judgment result; The adjustment module is used for: when at least one of the first judgment result and the second judgment result is yes, adjust the initial zero position of the satellite antenna to be calibrated, and repeatedly call the calculation and acquisition module and the judgment module until both the first judgment result and the second judgment result are no, and complete the calibration of the satellite antenna to be calibrated, where the initial zero position is the due north direction; Also including a first determination module, and the first determination module is used for: Adjust the orientation of the satellite antenna to be calibrated until the satellite antenna to be calibrated receives the maximum X-band signal of the sun.

5. The system for calibrating a satellite antenna with reference to the sun position according to claim 4, wherein Also including a second determination module, and the second determination module is used for: Determine the magnitude of the X-band signal of the sun received by the satellite antenna to be calibrated through a spectrum analyzer.

6. A system for calibrating a satellite antenna according to the reference solar position as claimed in any one of claims 4 to 5, characterized in that, Also including a control and tracking module, and the control and tracking module is used for: using the calibrated satellite antenna to track the satellite.

7. A storage medium, characterized in that, Instructions are stored in the storage medium, and when the computer reads the instructions, the computer is made to execute a method for calibrating a satellite antenna with reference to the sun position as described in any one of claims 1 to 3.

8. An electronic device, characterized in that, Comprising a processor and the storage medium according to claim 7, the processor executing instructions in the storage medium.

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