A method and device for calibrating a satellite ground high-speed receiver turntable

Abstract

The present invention relates to the field of satellite communications and provides a method and device for calibrating a high-speed ground satellite receiver turntable. The method comprises the following steps: rotating the receiver antenna surface to a horizontal calibration plane in the pitch angle zeroing direction through a turntable control; calculating the distance difference between the antenna and the satellite based on the phase difference of satellite signals received by a first antenna and a second antenna; calculating a first angle based on the distance difference; and calculating the turntable calibration angle to be compensated based on the current satellite transit azimuth, the first angle, and the angle between a turntable reference zeroing line and a line connecting the first and second antennas. The ground high-speed receiver antenna and the turntable zeroing point can be calibrated using only the phase difference of signals received by two standard antennas from a single satellite, combined with the azimuth and pitch angle information at the time of satellite transit. Azimuth calibration eliminates the need to first find the magnetic north direction using a compass and then query the local magnetic declination for compensation, resulting in more accurate test results and a simpler method.

Description

Technical Field

[0001] The present invention relates to the field of satellite communications, and in particular to a method, device, equipment and storage medium for calibrating a satellite ground high-speed receiver turntable. Background Art

[0002] When high-speed ground equipment communicates with satellites, the azimuth and elevation of satellites in orbits other than geostationary orbits change in real time as they pass relative to the ground equipment. If the ground equipment antenna is fixed, with its maximum radiation gain at a fixed angle, communication gain between the satellite and the ground equipment is maximized, resulting in optimal performance, only when the satellite passes in the direction of maximum gain. Beyond the maximum gain angle, the ground equipment gain decreases, impacting communication performance. Therefore, high-speed ground satellite receivers typically have a turntable attached to the antenna to simultaneously rotate the antenna in both azimuth and elevation. The ground high-speed receiver can obtain the azimuth and elevation corresponding to the estimated satellite pass time in advance from a backend system. When a satellite passes by, the ground high-speed receiver controls the turntable to rotate according to the pre-determined azimuth and elevation angles, aligning the antenna with the direction of maximum radiation gain toward the satellite, improving communication performance. However, the original zeroing azimuth and pitch angles of the turntable connected to the ground high-speed receiver antenna need to be consistent with the original zero-point azimuth and pitch angles of the satellite budget system, because the turntable can only control the angle of rotation. If the turntable and the satellite transit zeroing angle are different, the controlled turntable will cause the antenna angle to point incorrectly, and the best effect cannot be achieved. Therefore, the turntable needs to be calibrated in advance to the same angle as the satellite transit zeroing angle.

[0003] Because the satellite transit's original zero-point angles for pitch are based on sea level and for azimuth on true north, the traditional turntable zero-angle calibration method involves using a spirit level to calibrate the pitch. Azimuth calibration requires first finding magnetic north with a compass, then calculating the local magnetic declination (the angle between the magnetic North Pole and the geographic North Pole, true north) to compensate for true north. This requires calibrating the compass near the satellite's high-speed ground receiver, turntable, and antenna. Furthermore, these ground-based receivers, turntables, and antennas typically have iron or metal casings or may be surrounded by large iron or other magnetic materials on the ground. This can affect compass test accuracy and lead to turntable calibration errors. Furthermore, since magnetic declination varies from location to location and changes over time, calibration can be complex and error-prone. Summary of the Invention

[0004] The present invention provides a satellite ground high-speed receiver turntable calibration method, device, equipment and storage medium, which are used to solve the defects of the prior art such as troublesome calibration and large errors, and realize simple calibration with high accuracy.

[0005] The present invention provides a method for calibrating a satellite ground high-speed receiver turntable, comprising the following steps.

[0006] Rotate the receiver antenna surface to the horizontal calibration plane in the direction of zeroing the pitch angle through the turntable control;

[0007] The distance difference between the antenna and the satellite is calculated based on the phase difference between the first antenna and the second antenna when receiving the satellite signal; wherein the first antenna and the second antenna are fixed on the same plane of the receiver antenna surface; the distance difference is the difference between the distance from the first antenna to the satellite and the distance from the second antenna to the satellite;

[0008] A first angle is obtained by calculating the distance difference; wherein the first angle is the angle between the line connecting the first antenna and the satellite and the line connecting the second antenna and the satellite;

[0009] The turntable calibration angle to be compensated is calculated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna.

[0010] According to a method for calibrating a high-speed ground satellite receiver turntable provided by the present invention, before calculating the distance difference between the antenna and the satellite based on the phase difference between the first antenna and the second antenna when receiving the satellite signal, the method includes:

[0011] A one-to-two switch is connected to the receiver, and output ports of the one-to-two switch are connected to the first antenna and the second antenna respectively;

[0012] When the output port of the one-to-two switch is connected to the first antenna at the first moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a first phase;

[0013] When the output port of the one-to-two switch is connected to the second antenna at the second moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is the second phase;

[0014] When the output port of the one-to-two switch is connected to the first antenna at a third moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a third phase; wherein the third moment is later than the first moment;

[0015] The phase difference between the first antenna and the second antenna when receiving the satellite signal is calculated based on the first phase, the second phase, and the third phase.

[0016] According to a method for calibrating a high-speed ground satellite receiver turntable provided by the present invention, the distance difference between the antenna and the satellite is calculated based on the phase difference between the first antenna and the second antenna when receiving the satellite signal, which is achieved by the following formula:

[0017] ;

[0018] Where OB is the distance difference between the antenna and the satellite; is the phase difference between the first antenna and the second antenna through which the satellite signal is received; is the wavelength of the satellite signal.

[0019] According to a satellite ground high-speed receiver turntable calibration method provided by the present invention, a first angle is obtained by calculating the distance difference, comprising:

[0020] Calculate a first angle value at the current moment using an inverse cosine function based on the distance difference, the distance between the first antenna and the second antenna, the length of the line connecting the first antenna and the second antenna, the length of the line connecting the satellite radiation signal and the first antenna, and the length of the line connecting the satellite radiation signal and the second antenna;

[0021] Determine the rotation direction of the first angle based on the angle between the first antenna and the satellite and the second antenna and the satellite, calculated based on the first angle value and the distance difference at the next moment;

[0022] The first angle is determined according to the first angle value and the first angle rotation direction.

[0023] According to a method for calibrating a high-speed satellite ground receiver turntable provided by the present invention, the turntable calibration angle to be compensated is calculated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna, and is calculated using the following formula:

[0024] ;

[0025] in, The angle of the turntable to be compensated and calibrated; is the angle between the line connecting the first antenna and the second antenna and the azimuth direction of the satellite transit; is the satellite transit azimuth at the current moment; The angle between the turntable reference zero line and the line connecting the first antenna and the second antenna; is the phase difference between the first antenna and the second antenna in receiving satellite signals; OO' is the length of the line connecting the first antenna and the second antenna; is the satellite transit pitch angle at the current moment.

[0026] The present invention also provides a satellite ground high-speed receiver turntable calibration device, comprising the following modules:

[0027] The rotation module is used to rotate the receiver antenna surface to the horizontal calibration plane in the direction of zeroing the pitch angle through the turntable control;

[0028] a distance difference calculation module, configured to calculate a distance difference between the antenna and the satellite based on a phase difference between the first antenna and the second antenna when receiving satellite signals; wherein the first antenna and the second antenna are fixed on the same plane as the receiver antenna surface; and the distance difference is the difference between the distance from the first antenna to the satellite and the distance from the second antenna to the satellite;

[0029] a first angle calculation module, configured to calculate a first angle by using a distance difference; wherein the first angle is an angle between a line connecting the first antenna and the satellite and a line connecting the second antenna and the satellite;

[0030] The turntable compensation calibration angle calculation module is used to calculate the turntable compensation calibration angle based on the satellite's transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna.

[0031] The satellite ground high-speed receiver turntable calibration device provided by the present invention also includes:

[0032] A one-to-two switch connection module is used to connect a one-to-two switch to the receiver, and the output ports of the one-to-two switch are connected to the first antenna and the second antenna respectively;

[0033] a phase determination module, configured to, when the output port of the one-to-two switch is connected to the first antenna at a first moment, determine that the phase of the radio frequency chip detection signal within the receiver is a first phase; when the output port of the one-to-two switch is connected to the second antenna at a second moment, determine that the phase of the radio frequency chip detection signal within the receiver is a second phase; and when the output port of the one-to-two switch is connected to the first antenna at a third moment, determine that the phase of the radio frequency chip detection signal within the receiver is a third phase; wherein the third moment is later than the first moment;

[0034] The phase difference calculation module is used to calculate the phase difference between the first antenna and the second antenna through receiving the satellite signal according to the first phase, the second phase and the third phase.

[0035] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for calibrating a satellite ground high-speed receiver turntable as described above is implemented.

[0036] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for calibrating a satellite ground high-speed receiver turntable as described above is implemented.

[0037] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned methods for calibrating a satellite ground high-speed receiver turntable.

[0038] The present invention provides a method, device, equipment, and storage medium for calibrating a high-speed ground satellite receiver turntable. The method involves rotating the receiver antenna surface to a horizontal calibration plane in the pitch-angle zeroing direction via a turntable control; calculating the distance difference between the antenna and the satellite based on the phase difference between satellite signals received by a first antenna and a second antenna; calculating a first angle based on the distance difference; and calculating the turntable calibration angle to be compensated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first and second antennas. The ground-based high-speed receiver antenna and the turntable zeroing point can be calibrated using only the phase difference of the signals received by two standard antennas from a single satellite, combined with the azimuth and pitch angle information at the time of the satellite transit. Azimuth calibration eliminates the need to first find the magnetic north direction using a compass and then query the local magnetic declination for compensation, resulting in more accurate test results and a simpler method. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 The present invention provides a flow chart of a method for calibrating a high-speed satellite ground receiver turntable.

[0041] Figure 2 This is a standard antenna test and calibration turntable model provided by the present invention.

[0042] Figure 3 This is the auxiliary line graphic provided by the present invention.

[0043] Figure 4 This is the three-dimensional modeling verification model diagram provided by the present invention.

[0044] Figure 5 The present invention is a schematic structural diagram of a satellite ground high-speed receiver turntable calibration device.

[0045] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0047] The following combination Figures 1-6 The present invention is described.

[0048] Figure 1 This is one of the flow charts of the satellite ground high-speed receiver turntable calibration method provided by the present invention, such as Figure 1 As shown, the method includes the following:

[0049] Step 101: Rotate the receiver antenna plane to a horizontal calibration plane in the pitch angle zero direction through a turntable control.

[0050] In the above step 101, if Figure 2 As shown, two standard antennas are temporarily fixed to the antenna surface above the high-speed ground satellite receiver turntable. The first antenna is standard antenna 1, and the second antenna is standard antenna 2. The receiver antenna's maximum gain radiation direction is perpendicular to the antenna surface, or the normal to the antenna surface. Therefore, the goal is to ensure that when a satellite passes over, the ground high-speed receiver controls the turntable to align the normal of the receiver antenna surface with the direction of the satellite's transit. It is known that the backend system pre-calculates the real-time azimuth and elevation angles of a satellite transit and transmits them to the ground high-speed receiver. The receiver then controls the turntable to follow the satellite based on the transmitted angles. However, the turntable only receives angle information, so the turntable must pre-calibrate its azimuth and elevation to a reference zero point that matches the transmitted satellite transit azimuth and elevation angles. The satellite transit azimuth reference zero point points to true north, and the elevation angle is level with sea level. Therefore, the turntable's elevation angle can be directly calibrated using a spirit level, and the azimuth angle can be calibrated using the solution provided in this embodiment of the present invention.

[0051] First, the receiver antenna surface is rotated to the horizontal calibration plane in the direction of pitch angle zeroing through the turntable control. The standard antenna 1 and the standard antenna 2 are fixed on the same plane of the receiver antenna surface, such as Figure 3 As shown, auxiliary line graphics are established for calculation, with the receiver antenna surface as the X and Y axes, the antenna surface normal as the Z axis, and the line from standard antenna 1 to standard antenna 2 as the positive direction of the X axis to establish a three-dimensional rectangular coordinate system.

[0052] It is known that the satellite transit azimuth at the time of test is The pitch angle is , the coordinate point of standard antenna 1 is O, the coordinate point of standard antenna 2 is O', the coordinate point of satellite is A, the coordinate point of satellite projection on XY plane is A', and the coordinate point on X axis is C, that is, OA is perpendicular to OC, and A'C is also perpendicular to OC. Line OA is the line connecting the satellite radiation signal to standard antenna 1, line O'A is the line connecting the satellite radiation signal to standard antenna 2, and line OO' is the distance between standard antenna 1 and standard antenna 2 (less than half of the wavelength of satellite signal). Since the distances OA and O'A between the satellite and standard antenna 1 and standard antenna 2 are very far relative to the distance OO' between standard antenna 1 and standard antenna 2, that is, the angle between OA and O'A is very small, OA can be approximately equivalent to parallel to O'A. Put O' on the perpendicular line OA, with the focus perpendicular to point B, OB can be approximately equivalent to OA-O'A, which is the difference in distances from satellite signal radiation to standard antenna 1 and standard antenna 2. The angle between OO' and OA is , the angle between OO' and OA' is That is, the angle between the line connecting standard antenna 1 and standard antenna 2 and the azimuth direction of the satellite transit.

[0053] Optionally, before calculating the distance difference between the antenna and the satellite based on the phase difference between the first antenna and the second antenna when receiving the satellite signal, the method includes:

[0054] A one-to-two switch is connected to the receiver, and output ports of the one-to-two switch are connected to the first antenna and the second antenna respectively;

[0055] When the output port of the one-to-two switch is connected to the first antenna at the first moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a first phase;

[0056] When the output port of the one-to-two switch is connected to the second antenna at the second moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is the second phase;

[0057] When the output port of the one-to-two switch is connected to the first antenna at a third moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a third phase; wherein the third moment is later than the first moment;

[0058] The phase difference between the first antenna and the second antenna when receiving the satellite signal is calculated based on the first phase, the second phase, and the third phase.

[0059] In the above steps, the distance difference OB of the satellite signal radiated to the standard antenna 1 and the standard antenna 2 can be calculated based on the phase difference between the space satellite signal and the standard antenna 1 and the standard antenna 2. The specific method is to connect the satellite ground high-speed receiver to a one-to-two switch, and connect the switch output ports to standard antenna 1 and standard antenna 2 respectively. First, the switch is connected to standard antenna 1, and the RF chip inside the receiver detects the signal phase. , then the switch is switched to connect to the standard antenna 2, and the RF chip inside the receiver detects the signal phase ,therefore:

[0060]

[0061] Then the switch is switched back to connect to standard antenna 1, and the RF chip inside the receiver detects the signal phase. ,therefore;

[0062]

[0063] Subtracting the above two equations yields the following result: .

[0064] Step 102: Calculate the distance difference between the antenna and the satellite based on the phase difference between the first antenna and the second antenna when receiving the satellite signal; wherein the first antenna and the second antenna are fixed on the same plane of the receiver antenna surface; the distance difference is the difference between the distance from the first antenna to the satellite and the distance from the second antenna to the satellite.

[0065] Optionally, the distance difference between the antenna and the satellite is calculated based on the phase difference between the first antenna and the second antenna when receiving the satellite signal, which is achieved by the following formula:

[0066] ;

[0067] Where OB is the distance difference between the antenna and the satellite; is the phase difference between the first antenna and the second antenna through which the satellite signal is received; is the wavelength of the satellite signal.

[0068] Step 103: Obtain a first angle by calculating the distance difference; wherein the first angle is the angle between the line connecting the first antenna and the satellite and the line connecting the second antenna and the satellite.

[0069] Optionally, obtaining the first angle by calculating the distance difference includes:

[0070] Step A1: Calculate a first angle value at the current moment using an inverse cosine function based on the distance difference, the distance between the first antenna and the second antenna, the length of the line connecting the first antenna and the second antenna, the length of the line connecting the satellite radiation signal and the first antenna, and the length of the line connecting the satellite radiation signal and the second antenna;

[0071] Step A2: determining a rotation direction of the first angle by calculating an angle between a line connecting the first antenna and the satellite and a line connecting the second antenna and the satellite based on the first angle value and a distance difference at a next moment;

[0072] Step A3: Determine the first angle according to the first angle value and the rotation direction of the first angle.

[0073] In the above steps A1 to A3, the line connecting the first antenna and the second antenna and the line connecting the satellite transit azimuth direction is OA', and the line connecting the satellite radiation signal and the standard antenna 1 is OA.

[0074] According to the following formula:

[0075]

[0076] Combining various calculations yields:

[0077]

[0078] in, That is the first angle.

[0079] Since the distance between standard antenna 1 and standard antenna 2 is much smaller than the distance relative to the satellite, the angle between the line connecting standard antenna 1 and standard antenna 2 and the satellite azimuth direction is , which can be approximately equivalent to the angle between the antenna surface of the high-speed ground receiver for satellite communications and the horizontal rotation center of the turntable. For greater accuracy and rigor, if the coordinate point O of the standard antenna 1 is placed at the center of the horizontal rotation between the receiver antenna surface and the turntable, the calculation result will be more accurate.

[0080] Due to the calculated It may be the angle between the line connecting the standard antenna 1 and the standard antenna 2 and the satellite azimuth direction in the clockwise direction, or it may be the angle in the counterclockwise direction. Control the turntable to rotate clockwise After the angle is calculated, the angle between the satellite azimuth direction and the line connecting standard antenna 1 and standard antenna 2 at the next moment is calculated again. .if Less than ,but It is the counterclockwise angle between the satellite azimuth direction and the line connecting standard antenna 1 and standard antenna 2. It increases in clockwise direction from 0 to 360 according to the satellite horizontal azimuth angle. Take a negative value, otherwise if Greater than , In clockwise direction, Take a positive value.

[0081] Step 104 : Calculate the turntable calibration angle to be compensated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna.

[0082] In the above step 104, it is known that the satellite transit azimuth is (the angle between the satellite azimuth reference zero direction and the true north direction), so the angle between the line OO' connecting standard antenna 1 and standard antenna 2 and the true north direction is , and then set the included angle between the turntable reference zeroing line and the line OO' connecting standard antenna 1 and standard antenna 2 as γ (positive value in the clockwise direction and negative value in the counterclockwise direction), the calibration angle that the turntable needs to compensate can be calculated.

[0083] Optionally, the turntable calibration angle to be compensated is calculated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna, and is calculated using the following formula:

[0084] ;

[0085] in, The angle of the turntable to be compensated and calibrated; is the angle between the line connecting standard antenna 1 and standard antenna 2 and the azimuth direction of the satellite transit; is the satellite transit azimuth at the current moment; The angle between the turntable reference zeroing line and the line connecting standard antenna 1 and standard antenna 2; is the phase difference between the satellite signals received by standard antenna 1 and standard antenna 2; OO' is the length of the line connecting standard antenna 1 and standard antenna 2; is the satellite transit pitch angle at the current moment.

[0086] Calculate the angle that the turntable needs to be calibrated by the above method , and send this value back to the background system. The background system calculates the azimuth and pitch angle of each satellite transit in advance, and calibrates the turntable angle The compensation is directly added to the satellite's calculated azimuth angle. When the backend system transmits the satellite's transit azimuth and elevation angle information to the satellite's high-speed ground receiver, the compensated angle is transmitted. When the receiver controls the turntable to follow the satellite, it can accurately track each satellite transit in real time, pointing the antenna's maximum radiation direction in the direction of the satellite in real time.

[0087] After completing the turntable calibration, remove standard antenna 1 and standard antenna 2, connect the satellite ground high-speed receiver to any antenna port of standard antenna 1 or standard antenna 2 and connect it back to the communication antenna on its original antenna surface. The software control switch inside the receiver is locked to the corresponding connected antenna port, and the system can start normal operation.

[0088] The next time you recalibrate, the backend system needs to clear the turntable calibration compensation angle sent back from the last calibration. , use the original calculated satellite transit azimuth and pitch angles to recalculate and calibrate.

[0089] The present invention uses three-dimensional modeling software according to Figure 2 The auxiliary line graphics shown in the figure are used to build the model. Figure 4 As shown, simulate the application scenario and substitute the relevant parameters into the calculation formula to calculate the angle between the line connecting standard antenna 1 and standard antenna 2 and the satellite azimuth direction. Test whether the angle is the same as in the established model.

[0090] For example, the satellite signal operating frequency f = 500MHz, wavelength λ = c / f = 600mm (c is the speed of light 3 10 8 m / s), the distance OB of the satellite signal radiated to the standard antenna 1 and the standard antenna 2 is 481.07 mm (in actual application, it can be obtained by calculating the phase difference as described in Section 5 above, which is simplified here to be directly measured in the 3D model), the spacing OO' between the standard antenna 1 and the standard antenna 2 is 900 mm, and the satellite transit pitch angle The 3D modeling model measured that the angle between the line connecting the standard antenna 1 and the standard antenna 2 and the satellite azimuth direction was 56.25°.

[0091]

[0092] According to the comparison between the above three-dimensional modeling and the calculation results of the formula of the embodiment of the present invention, the difference is 56.31°-56.25°=0.06°, indicating that the calculation results of the formula of the embodiment of the present invention are very close to the actual measured values of the three-dimensional model, and the error is less than 0.1°, which meets the target requirements, proving that the calibration method of the embodiment of the present invention is reasonable and effective.

[0093] The present invention provides a method for calibrating a high-speed ground satellite receiver turntable. The method involves rotating the receiver antenna surface to a horizontal calibration plane in the pitch angle zeroing direction via a turntable control; calculating the distance difference between the antenna and the satellite based on the phase difference between satellite signals received by a first antenna and a second antenna; calculating a first angle based on the distance difference; and calculating the turntable calibration angle to be compensated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first and second antennas. The ground high-speed receiver antenna and the turntable zeroing point can be calibrated using only the phase difference of the signals received by two standard antennas from a single satellite, combined with the azimuth and pitch angle information at the time of the satellite transit. Azimuth calibration eliminates the need to first find the magnetic north direction using a compass and then query the local magnetic declination for compensation. This results in more accurate test results and a simpler method.

[0094] The satellite ground high-speed receiver turntable calibration device provided by the present invention is described below. The satellite ground high-speed receiver turntable calibration device described below and the satellite ground high-speed receiver turntable calibration method described above can be referenced to each other.

[0095] Figure 5 This is one of the flow charts of the satellite ground high-speed receiver turntable calibration device provided by the present invention, such as Figure 5 As shown, the device includes the following:

[0096] The rotation module 501 is used to rotate the receiver antenna plane to a horizontal calibration plane in the pitch angle zero direction through the control of a turntable.

[0097] Optionally, the satellite ground high-speed receiver turntable calibration device provided by the present invention further includes:

[0098] A one-to-two switch connection module is used to connect a one-to-two switch to the receiver, and the output ports of the one-to-two switch are connected to the first antenna and the second antenna respectively;

[0099] a phase determination module, configured to, when the output port of the one-to-two switch is connected to the first antenna at a first moment, determine that the phase of the radio frequency chip detection signal within the receiver is a first phase; when the output port of the one-to-two switch is connected to the second antenna at a second moment, determine that the phase of the radio frequency chip detection signal within the receiver is a second phase; and when the output port of the one-to-two switch is connected to the first antenna at a third moment, determine that the phase of the radio frequency chip detection signal within the receiver is a third phase; wherein the third moment is later than the first moment;

[0100] The phase difference calculation module is used to calculate the phase difference between the first antenna and the second antenna through receiving the satellite signal according to the first phase, the second phase and the third phase.

[0101] The distance difference calculation module 502 is used to calculate the distance difference between the antenna and the satellite based on the phase difference of the satellite signals received by the first antenna and the second antenna; wherein the first antenna and the second antenna are fixed on the same plane of the receiver antenna surface; the distance difference is the difference between the distance from the first antenna to the satellite and the distance from the second antenna to the satellite.

[0102] The first angle calculation module 503 is configured to obtain a first angle by calculating the distance difference; wherein the first angle is the angle between the line connecting the first antenna and the satellite and the line connecting the second antenna and the satellite.

[0103] The turntable compensation calibration angle calculation module 504 is used to calculate the turntable compensation calibration angle according to the current satellite transit azimuth, the first angle, and the angle between the turntable reference zero line and the line connecting the first antenna and the second antenna.

[0104] The present invention provides a high-speed satellite ground receiver turntable calibration device. The device rotates the receiver antenna surface to a horizontal calibration plane in the pitch-angle zeroing direction via a turntable control. The device then calculates the distance difference between the antenna and the satellite based on the phase difference between satellite signals received by the first and second antennas. The device then calculates a first angle based on the distance difference. The turntable calibration angle to be compensated is calculated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first and second antennas. Using only the phase difference between signals received by a single satellite and two standard antennas, combined with the azimuth and pitch angle information at the time of the satellite transit, the device can calibrate the ground high-speed receiver antenna and the turntable zeroing point. This method provides more accurate test results and simplifies the method.

[0105] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for calibrating a satellite ground high-speed receiver turntable as described above is implemented.

[0106] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for calibrating a satellite ground high-speed receiver turntable as described above is implemented.

[0107] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned methods for calibrating a satellite ground high-speed receiver turntable.

[0108] The present invention provides a method, device, equipment, and storage medium for calibrating a high-speed ground satellite receiver turntable. The method involves rotating the receiver antenna surface to a horizontal calibration plane in the pitch-angle zeroing direction via a turntable control; calculating the distance difference between the antenna and the satellite based on the phase difference between satellite signals received by a first antenna and a second antenna; calculating a first angle based on the distance difference; and calculating the turntable calibration angle to be compensated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first and second antennas. The ground-based high-speed receiver antenna and the turntable zeroing point can be calibrated using only the phase difference of the signals received by two standard antennas from a single satellite, combined with the azimuth and pitch angle information at the time of the satellite transit. Azimuth calibration eliminates the need to first find the magnetic north direction using a compass and then query the local magnetic declination for compensation, resulting in more accurate test results and a simpler method.

[0109] Figure 6 An example of a physical structure diagram of an electronic device is shown below. Figure 6As shown, the electronic device may include: a processor 810, a communications interface 820, a memory 830, and a communication bus 840. The processor 810, the communications interface 820, and the memory 830 communicate with each other via the communication bus 840. The processor 810 may call logic instructions in the memory 830 to execute the satellite ground high-speed receiver turntable calibration method.

[0110] Furthermore, the logic instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0111] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the satellite ground high-speed receiver turntable calibration method provided by the above methods.

[0112] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the satellite ground high-speed receiver turntable calibration method provided by the above methods.

[0113] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0114] Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented using software plus a necessary general-purpose hardware platform, or of course, hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, or an optical disk, and includes a number of instructions for causing a computer device (such as a personal computer, server, or network device) to execute the methods described in each embodiment or certain portions of the embodiments.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for calibrating a high-speed satellite ground receiver turntable, characterized in that: include: Rotate the receiver antenna surface to the horizontal calibration plane in the direction of zeroing the pitch angle through the turntable control; The distance difference between the antenna and the satellite is calculated based on the phase difference between the satellite signals received by the first antenna and the second antenna; wherein the first antenna and the second antenna are fixed on the same plane of the receiver antenna surface; and the distance difference is the difference between the distance from the first antenna to the satellite and the distance from the second antenna to the satellite; A first angle is obtained by calculating the distance difference; wherein the first angle is the angle between the connection line between the first antenna and the satellite and the connection line between the second antenna and the satellite; The turntable calibration angle to be compensated is calculated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna.

2. The method for calibrating a high-speed satellite ground receiver turntable according to claim 1, wherein: Before calculating the distance difference between the antenna and the satellite based on the phase difference between the first antenna and the second antenna in receiving the satellite signal, the method includes: Connecting a one-to-two switch to the receiver, wherein output ports of the one-to-two switch are connected to the first antenna and the second antenna respectively; When the output port of the one-to-two switch is connected to the first antenna at a first moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a first phase; When the output port of the one-to-two switch is connected to the second antenna at the second moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a second phase; When the output port of the one-to-two switch is connected to the first antenna at a third moment, determining that the phase of the detection signal of the radio frequency chip inside the receiver is a third phase; wherein the third moment is later than the first moment; The phase difference between the first antenna and the second antenna in receiving the satellite signal is calculated according to the first phase, the second phase, and the third phase.

3. The method for calibrating a high-speed satellite ground receiver turntable according to claim 1, wherein: The distance difference between the antenna and the satellite is calculated based on the phase difference between the first antenna and the second antenna in receiving the satellite signal, which is achieved by the following formula: ； Where OB is the distance difference between the antenna and the satellite; The phase difference between the first antenna and the second antenna in receiving the satellite signal; is the wavelength of the satellite signal.

4. The method for calibrating a high-speed satellite ground receiver turntable according to claim 1, wherein: The calculating the first angle by using the distance difference includes: Calculate a first angle value at the current moment using an inverse cosine function based on the distance difference, the distance between the first antenna and the second antenna, the length of the line connecting the first antenna and the second antenna, the length of the line connecting the satellite radiation signal and the first antenna, and the length of the line connecting the satellite radiation signal and the second antenna; Determining a rotation direction of the first angle by calculating an angle between a line connecting the first antenna and the satellite and a line connecting the second antenna and the satellite based on the first angle value and a distance difference at a next moment; The first angle is determined according to the first angle value and the rotation direction of the first angle.

5. The method for calibrating a high-speed satellite ground receiver turntable according to claim 1, wherein: The turntable calibration angle to be compensated is calculated based on the current satellite transit azimuth, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna, and is calculated using the following formula: ； in, The angle of the turntable to be compensated and calibrated; is the angle between the line connecting the first antenna and the second antenna and the azimuth direction of the satellite transit; is the satellite transit azimuth at the current moment; The angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna; is the phase difference between the first antenna and the second antenna in receiving satellite signals; OO' is the length of the line connecting the first antenna and the second antenna; is the satellite transit pitch angle at the current moment.

6. A satellite ground high-speed receiver turntable calibration device, characterized in that: include: The rotation module is used to rotate the receiver antenna surface to the horizontal calibration plane in the direction of zeroing the pitch angle through the turntable control; a distance difference calculation module, configured to calculate a distance difference between the antenna and the satellite based on a phase difference between the first antenna and the second antenna when receiving satellite signals; wherein the first antenna and the second antenna are fixed on the same plane as the receiver antenna surface; and the distance difference is the difference between the distance from the first antenna to the satellite and the distance from the second antenna to the satellite; A first angle calculation module, configured to calculate a first angle by using the distance difference; wherein the first angle is the angle between the connection line between the first antenna and the satellite and the connection line between the second antenna and the satellite; The turntable compensation calibration angle calculation module is used to calculate the turntable compensation calibration angle based on the satellite's transit azimuth at the current moment, the first angle, and the angle between the turntable reference zeroing line and the line connecting the first antenna and the second antenna.

7. The satellite ground high-speed receiver turntable calibration device according to claim 6, characterized in that: The device further comprises: A one-to-two switch connection module, configured to connect a one-to-two switch to the receiver, wherein output ports of the one-to-two switch are connected to the first antenna and the second antenna respectively; a phase determination module, configured to, when the output port of the one-to-two switch is connected to the first antenna at a first moment, determine that the phase of the RF chip detection signal within the receiver is a first phase; when the output port of the one-to-two switch is connected to the second antenna at a second moment, determine that the phase of the RF chip detection signal within the receiver is a second phase; and when the output port of the one-to-two switch is connected to the first antenna at a third moment, determine that the phase of the RF chip detection signal within the receiver is a third phase; wherein the third moment is later than the first moment; The phase difference calculation module is used to calculate the phase difference between the first antenna and the second antenna when receiving the satellite signal based on the first phase, the second phase and the third phase.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the satellite ground high-speed receiver turntable calibration method according to any one of claims 1 to 5 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the satellite ground high-speed receiver turntable calibration method according to any one of claims 1 to 5 is implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the satellite ground high-speed receiver turntable calibration method according to any one of claims 1 to 5 is implemented.

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