CN111342882A - Ka frequency band satellite-to-satellite rapid phase correction method, storage medium and electronic equipment - Google Patents
Ka frequency band satellite-to-satellite rapid phase correction method, storage medium and electronic equipment Download PDFInfo
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Abstract
The invention provides a Ka frequency band satellite-alignment rapid phase calibration method, a storage medium and electronic equipment, wherein the method comprises the following steps: the method comprises the following steps of carrying out self-tracking on a satellite in an S frequency band, and searching a Ka difference zero point after tracking an S frequency band signal of the satellite; recording an S deviation value corresponding to the Ka difference zero point when the Ka difference zero point is searched, wherein the S deviation value comprises an azimuth deviation voltage value and a pitch deviation voltage value; correspondingly superposing the azimuth deviation voltage value and the pitch deviation voltage value in the S deviation value to the azimuth error voltage value and the pitch voltage error value corresponding to the S frequency band, and then carrying out S frequency band bias tracking on the satellite so as to realize rapid phase correction of the satellite by the Ka frequency band; and performing Ka frequency band satellite fast phase calibration in the process of performing biased tracking on the satellite in the S frequency band. Therefore, on the basis of S-band self-tracking, proper offset is superposed, and the satellite alignment of the Ka band can be performed quickly, so that the technical difficulty of satellite alignment quick phase correction caused by narrow Ka band beams is solved.
Description
Technical Field
The invention relates to the technical field of satellite data receiving, in particular to a Ka frequency band satellite-to-satellite rapid phase correction method, a storage medium and electronic equipment.
Background
The monopulse self-tracking is a method for realizing tracking by utilizing a differential mode electric field directional diagram to be zero in the axial direction of an antenna and have a polarity non-zero value in the direction deviating from the axial direction, is a high-precision zero value automatic tracking system, and is usually used in ground systems such as measurement and control, data receiving and the like which require high tracking precision for tracking a high-speed moving target. Fig. 1 is a schematic block diagram of single-pulse self-tracking of a satellite ground system. As shown in fig. 1, the sum and difference signals output by the feed network are amplified by the low noise amplifier, the sum signal modulates the difference signal, and then the sum signal and the difference signal are added to synthesize 1 path of signal. And carrying out frequency conversion, amplification, demodulation and demodulation on the synthesized single-path signal to obtain an azimuth error signal and a pitch error signal, and sending the azimuth error signal and the pitch error signal to a servo system to drive an antenna to track a satellite. However, the relative phase shift of the sum channel and the difference channel caused by the influence of various factors such as the drift of the antenna electric axis, the change of the environmental temperature and the like continuously deteriorates the cross coupling index, and influences the acquisition and tracking of the ground system to the satellite. The phase calibration comprises the following main steps: (1) finding an antenna electric axis zero point; (2) antenna orientation is single-offsetThe angle and the pitching deflection angle are zero, and after the azimuth phase of the tracking receiver is roughly corrected and finely corrected, a phase shift value theta is found outAz(ii) a (3) The pitching single-deflection angle of the antenna is zero, the pitching phase of the tracking receiver is roughly corrected and finely corrected, and then the phase shift value theta is found outEl(ii) a (4) The phase polarity and cross-coupling are checked.
Of these steps, the first step is most important and difficult to find the electrical axis zero. The zero point of the electric axis is not right, the phase shift value is incorrect, the cross coupling index is deteriorated, and the acquisition and tracking of the ground system to the satellite are influenced. To ensure the rapid acquisition and stable tracking of the ground system to the satellite, calibration (i.e., phase correction) of the relative phases of the sum and difference channels is required. The current calibration method mainly comprises tower calibration and towerless calibration.
And a far-field calibration tower and a signal source need to be erected at a receiving station for tower calibration. However, when the system operating frequency is extended to the Ka band (frequency range is 26.5-40GHz), the remote condition is difficult to achieve (for example, 12m aperture antenna, operating frequency is 27.5GHz, R is 26.4 km; according to engineering experience, the minimum testing distance needs to be greater than the far-field condition 1/4, that is, R needs to be 6.6 km). Therefore, for the Ka frequency band, the method is extremely difficult to realize.
Aiming at the towerless phase correction requirement, in recent years, phase correction methods such as radio satellite phase correction, rapid phase correction, satellite-to-satellite phase correction, near-field phase correction and bias-feed auxiliary phase correction are proposed in sequence. The satellite fast phase calibration does not need to erect a far-field calibration tower, a signal source and the like, does not need to increase test equipment and instruments, can carry out fast phase calibration in the process of tracking the satellite by a ground receiving system, and is a better method for calibrating the phase.
The method for quickly calibrating the satellite is mature, is successfully applied to related engineering projects, and achieves good effect. However, the original method for quickly calibrating the satellite is to calibrate the satellite phase at S, X frequency band by adopting a quick phase calibration method under a program tracking satellite mode. Compared with the Ka band, the S, X band has a wider beam width, the requirement of the fast phase calibration for the angular offset range within the beam width is easily met, the Ka band has a narrower beam, and the fast phase calibration for the satellite in the Ka band is realized by a single-pass method.
Disclosure of Invention
The invention aims to solve the technical problem that the Ka frequency band satellite-to-satellite rapid phase correction is difficult to realize in the prior art, and further provides a Ka frequency band satellite-to-satellite rapid phase correction method, a storage medium and electronic equipment.
The invention provides a Ka frequency band satellite alignment rapid phase calibration method, which comprises the following steps:
the method comprises the following steps of carrying out self-tracking on a satellite in an S frequency band, and searching a Ka difference zero point after the S frequency band of the satellite is tracked;
searching a Ka difference zero point, and recording an S deviation value corresponding to the Ka difference zero point when the Ka difference zero point is searched, wherein the S deviation value comprises an azimuth deviation voltage value and a pitch deviation voltage value;
correspondingly superposing the azimuth deviation voltage value and the pitch deviation voltage value in the S deviation value to the azimuth error voltage value and the pitch error voltage value corresponding to the S frequency band, and then carrying out S frequency band bias tracking on the satellite so as to realize rapid phase correction of the satellite by the Ka frequency band;
and performing rapid satellite phase correction in the process of performing biased tracking on the satellite in the S frequency band.
Optionally, in the Ka band satellite fast phase calibration method, the step of performing Ka band satellite fast phase calibration in the process of performing biased tracking on the satellite in the S band includes:
a data acquisition step of acquiring AGC voltage value AGC of Ka frequency band in a first tracking state1Azimuthal voltage value VA1Pitch voltage value VE1；
An antenna adjusting step, namely adjusting the deflection specific angle of the antenna in the azimuth direction and the pitching direction to obtain AGC voltage value AGC of Ka frequency band in a second tracking state2Azimuthal voltage value VA2Pitch voltage value VE2；
A judging step, if AGC1-AGC2<△ AGC, judging that the antenna under the second tracking state is positioned in the main lobe of the Ka frequency band in the azimuth direction, otherwise repeating the data acquisition step and the antenna adjustment step until the antenna is positioned in the main lobe of the Ka frequency band in the azimuth direction, wherein △AGC is a preset judgment threshold value;
data analysis step, when the antenna is positioned in the main lobe of the Ka frequency band in the azimuth direction, according to △ VAAnd △ VEObtaining a value of phi, wherein: Δ VA＝VA2-VA1And Δ VE＝VE2-VE1；
A phase correction step: the square displacement phase value of the Ka frequency band is as follows: 270-phi; the left-hand signal in the pitch phase shift value is: 270- φ +180, the right-hand signal in the pitch phase-shift values is: 270-phi.
Optionally, in the above Ka band satellite-to-satellite fast phase calibration method, in the data analysis step, the value of phi is obtained according to the following manner:
optionally, in the above Ka band satellite-to-satellite fast phase calibration method, in the antenna adjusting step, adjusting that the antenna deflects by a specific angle in the azimuth direction and the pitch direction includes:
the specific angle is 0.02 °, and adjusting the antenna to deflect the specific angle in the azimuth direction and the pitch direction includes adjusting the antenna to deflect ± 0.02 ° in the azimuth direction and to deflect ± 0.02 ° in the pitch direction.
Optionally, in the Ka band satellite-to-satellite fast phase correction method, in the determining step, the preset determining threshold is △ AGC — 1 v.
Optionally, in the above Ka band satellite-to-satellite fast phase calibration method, the following steps are further included:
a storage step: and storing the square displacement phase value and the pitching phase value of the Ka frequency band as a Ka frequency band phase correction result.
The invention also provides a computer readable storage medium, wherein the storage medium is stored with a program instruction, and after the computer reads the program instruction, the computer executes any one of the Ka frequency band satellite-to-satellite rapid phase calibration methods.
The invention also provides electronic equipment which comprises at least one processor and at least one memory, wherein program instructions are stored in the at least one memory, and the at least one processor executes the Ka frequency band satellite-to-satellite rapid phase correction method after reading the program instructions.
Compared with the prior art, the technical scheme provided by the embodiment of the invention at least has the following beneficial effects:
the Ka frequency band satellite alignment rapid phase calibration method, the storage medium and the electronic equipment provided by the invention have the advantages of rapidness, reliability, simplicity, practicability and strong operability, a far-field calibration tower, a signal source and the like do not need to be erected, test equipment and instruments do not need to be added, rapid phase calibration can be carried out in the process of tracking a satellite by an S frequency band of a ground receiving system, and the technical difficulty of rapid phase calibration of the satellite due to the narrow wave beam of the Ka frequency band is solved.
Drawings
FIG. 1 is a schematic block diagram of single pulse self-tracking of a satellite ground system;
fig. 2 is a flowchart of a Ka band satellite-to-satellite fast phase calibration method according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating an embodiment of the invention in which an S-band automatically tracks a satellite and an offset search is superimposed to find a Ka-difference zero point;
fig. 4 is a schematic diagram of a hardware connection relationship of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless otherwise expressly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and to include specific meanings of the terms in the context of the invention as understood by those skilled in the art.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment provides a Ka band satellite-to-satellite fast phase calibration method, as shown in fig. 2, including the following steps:
s101: and self-tracking the satellite in the S frequency band, and searching a Ka difference zero point after tracking the S frequency band of the satellite.
S102: recording an S deviation value corresponding to the Ka difference zero point when the Ka difference zero point is searched, wherein the S deviation value comprises an azimuth deviation voltage value and a pitch deviation voltage value; specifically, the S-deviation value corresponding to the Ka-difference zero point may be determined with reference to the flow shown in fig. 3. After the satellite is subjected to self-tracking by adopting S-band tracking, certain offsets are superposed in the azimuth direction and the pitch direction respectively, and whether a proper Ka difference zero point is found or not can be judged by comparing the difference value between the azimuth and pitch voltage value of the Ka band before superposition offset and the azimuth and pitch voltage value after superposition offset with a phase correction condition. If the phase correction condition is not met, the offset is superposed in the azimuth direction and the pitch direction, and the judgment process is re-entered, and if the phase correction condition is met, the Ka difference zero point is found. The offsets of the azimuth and the pitch direction superimposed at this time are integrated as an S offset value.
S103: and correspondingly superposing the azimuth deviation voltage value and the pitch deviation voltage value in the S deviation value to the azimuth error voltage value and the pitch error voltage value corresponding to the S frequency band, and then carrying out S frequency band bias tracking on the satellite so as to realize rapid phase correction of the satellite by the Ka frequency band.
S104: and performing Ka frequency band satellite fast phase calibration in the process of performing biased tracking on the satellite in the S frequency band.
According to the scheme, proper bias can be superposed on the basis of S self-tracking to perform satellite alignment and rapid phase correction of the Ka frequency band, and the technical difficulty of satellite alignment and rapid phase correction caused by narrow wave beam of the Ka frequency band is solved. The method is rapid, reliable, simple, practical and strong in operability, a far-field calibration tower, a signal source and the like do not need to be erected, test equipment and instruments do not need to be added, and calibration of the phase difference between the Ka frequency band and the difference channel can be achieved in the process of tracking the satellite. Therefore, the method is very beneficial to the rapid acquisition and stable tracking of satellite signals of a satellite ground system and the guarantee of the normal reception of satellite data.
Preferably, in the above scheme, the step of performing the Ka band satellite fast phase calibration in the process of performing biased tracking on the satellite in the S band includes:
a data acquisition step of acquiring AGC voltage value AGC of Ka frequency band in a first tracking state1Azimuthal voltage value VA1Pitch voltage value VE1；
An antenna adjusting step, namely adjusting the deflection specific angle of the antenna in the azimuth direction and the pitching direction to obtain AGC voltage value AGC of Ka frequency band in a second tracking state2Azimuthal voltage value VA2Pitch voltage value VE2(ii) a In this step, the specific angle is 0.02 °, and adjusting the antenna to deflect by the specific angle in the azimuth direction and the pitch direction includes adjusting the antenna to deflect by ± 0.02 ° in the azimuth direction and to deflect by ± 0.02 ° in the pitch direction.
A judging step, if AGC1-AGC2<△ AGC, judging that the antenna in the second tracking state is positioned in the main lobe of the Ka frequency band in the azimuth direction, otherwise, repeating the data acquisition step and the antenna adjustment step until the antenna is positioned in the main lobe of the Ka frequency band in the azimuth direction, wherein △ AGC is a preset judgment threshold value, wherein, preferably △ AGC is equal to 1 v.
Data analysis step, when the antenna is positioned in the main lobe of the Ka frequency band in the azimuth direction, according to △ VAAnd △ VEObtaining a value of phi, wherein: Δ VA＝VA2-VA1And Δ VE＝VE2-VE1。
A phase correction step: the square displacement phase value of the Ka frequency band is as follows: 270-phi; the left-hand signal in the pitch phase shift value is: 270- φ +180, the right-hand signal in the pitch phase-shift values is: 270-phi.
Specifically, the value of φ is obtained as follows:
in the specific implementation process, the method can be operated in the following mode:
(1) the S frequency band is added with offset to track the satellite, and the AGC voltage of the Ka frequency band at the moment is counted1Azimuth error voltage VA1Pitch error voltage VE1；
(2) The antenna is pulled to bias 0.02 degree in the azimuth direction, and after the antenna is in place, the azimuth error voltage V of the Ka frequency band at the moment is countedA2Pitch error voltage VE2AGC voltage AGC2；
(3) Such as AGC1-AGC2>1V, the antenna tracking direction is outside the Ka main lobe at the moment;
(4) the step (1) to the step (3) are carried out again for pulling and deviating, and the pulling and deviating directions are sequentially azimuth-0.02 degrees, pitching 0.02 degrees and pitching-0.02 degrees; until there is one direction AGC1-AGC2<And (5) if the 1V meets the Ka main lobe condition, entering the step (5) for calculation, and if the Ka main lobe condition does not meet the Ka main lobe condition, exiting the phase correction process.
(5) Calculating an azimuth/pitch phase shift value according to the following formula;
ΔVA＝VA2-VA1；
ΔVE＝VE2-VE1；
finally, the obtained azimuth phase shift value of the Ka frequency band is as follows: 270-phi; pitch phase shift value: (left-hand signal: 270-phi +180, right-hand signal: 270-phi).
(6) And storing the phase correction result in a tracking receiver of the Ka frequency band.
(7) The phase polarity and cross-coupling are checked (using the inspection methods known in the art).
The method solves the technical difficulty of satellite alignment rapid phase correction caused by narrow Ka frequency band wave beam, and can also be used for satellite alignment rapid phase correction of S/X frequency band when orbit deviation is large.
Example 2
The embodiment provides a computer-readable storage medium, where program instructions are stored in the storage medium, and after reading the program instructions, a computer executes the Ka band satellite-to-satellite fast phase calibration method according to any one of the solutions in embodiment 1.
Example 3
The present embodiment provides an electronic device, as shown in fig. 4, including at least one processor 1 and at least one memory 2, where at least one memory 2 stores program information, and after reading the program information, at least one processor 1 executes the Ka band satellite-to-satellite fast phase calibration method according to any one of the solutions in embodiment 1. In fig. 4, one processor 1 is taken as an example. The electronic device may further include: an input device 3 and an output device 4. The processor 1, the memory 2, the input device 3 and the output device 4 may be connected by a bus or other means, and fig. 4 illustrates the connection by a bus as an example.
The memory 2, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The processor 1 executes various functional applications and data processing of the server by running the nonvolatile software program, instructions and modules stored in the memory 2, that is, implements the Ka band satellite-to-satellite fast phase calibration method described in any of the above embodiments 1.
The product can execute the method provided by the embodiment of the application, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this example, reference is made to the method provided in example 1 of the present application.
According to the scheme of the embodiment, only proper bias needs to be superposed on the basis of S self-tracking, and the satellite alignment of the Ka frequency band is performed quickly.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A Ka frequency band satellite alignment rapid phase correction method is characterized by comprising the following steps:
the method comprises the following steps of carrying out self-tracking on a satellite in an S frequency band, and searching a Ka difference zero point after tracking an S frequency band signal of the satellite;
recording an S deviation value corresponding to the Ka difference zero point when the Ka difference zero point is searched, wherein the S deviation value comprises an azimuth deviation voltage value and a pitch deviation voltage value;
correspondingly superposing the azimuth deviation voltage value and the pitch deviation voltage value in the S deviation value to the azimuth error voltage value and the pitch error voltage value corresponding to the S frequency band, and then carrying out S frequency band bias tracking on the satellite so as to realize rapid phase correction of the satellite by the Ka frequency band;
and performing Ka frequency band satellite phase correction in the process of performing biased tracking on the satellite in the S frequency band.
2. The Ka band satellite alignment rapid phase calibration method according to claim 1, wherein the step of performing Ka band satellite alignment phase calibration in the process of performing biased tracking on a satellite in the S band comprises:
a data acquisition step of acquiring AGC voltage value AGC of Ka frequency band in a first tracking state1Azimuthal voltage value VA1Pitch voltage value VE1；
An antenna adjusting step, namely adjusting the deflection specific angle of the antenna in the azimuth direction and the pitching direction to obtain AGC voltage value AGC of Ka frequency band in a second tracking state2Azimuthal voltage value VA2Pitch voltage value VE2；
A judging step, if AGC1-AGC2<△ AGC, then judgeOtherwise, repeating the data acquisition step and the antenna adjustment step until the antenna is positioned in the main lobe of the Ka frequency band in the azimuth direction, wherein △ AGC is a preset judgment threshold value;
data analysis step, when the antenna is positioned in the main lobe of the Ka frequency band in the azimuth direction, according to △ VAAnd △ VEObtaining a value of phi, wherein: Δ VA＝VA2-VA1And Δ VE＝VE2-VE1；
A phase correction step: the square displacement phase value of the Ka frequency band is as follows: 270-phi; the left-hand signal in the pitch phase shift value is: 270- φ +180, the right-hand signal in the pitch phase-shift values is: 270-phi.
3. The Ka frequency band satellite-alignment rapid phase calibration method according to claim 2, wherein in the data analysis step, the phi value is obtained according to the following mode:
4. the Ka band satellite-to-satellite fast phase correction method according to claim 2, wherein in the antenna adjustment step, adjusting the deflection angle of the antenna in the azimuth direction and the elevation direction by a specific angle comprises:
the specific angle is 0.02 °; adjusting the antenna to yaw by the particular angle in the azimuth direction and the elevation direction includes adjusting the antenna to yaw by ± 0.02 ° in the azimuth direction and by ± 0.02 ° in the elevation direction.
5. The Ka frequency band satellite-alignment rapid phase calibration method according to any one of claims 2-4, wherein in the judging step:
the preset judgment threshold is △ AGC-1 v.
6. The Ka frequency band satellite-alignment rapid phase calibration method according to claim 5, further comprising the following steps:
a storage step: and storing the square displacement phase value and the pitching phase value of the Ka frequency band as a Ka frequency band phase correction result.
7. A computer-readable storage medium, wherein the storage medium stores program instructions, and after reading the program instructions, the computer executes the Ka band satellite-to-satellite fast phase correction method according to any one of claims 1 to 6.
8. An electronic device, comprising at least one processor and at least one memory, wherein at least one memory stores program instructions, and when the program instructions are read by the at least one processor, the at least one processor executes the Ka band satellite-to-satellite fast phase correction method according to any one of claims 1 to 6.
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| US11923962B2 (en) | 2020-10-16 | 2024-03-05 | Viasat, Inc. | Systems and methods for calibrating ground stations |
| CN113328790A (en) * | 2021-06-30 | 2021-08-31 | 中国西安卫星测控中心 | Method for eliminating phase calibration in task of three-frequency-band ground measurement and control antenna |
| CN116800330A (en) * | 2023-08-23 | 2023-09-22 | 成都迅翼卫通科技有限公司 | Quick satellite aligning method and device |
| CN116800330B (en) * | 2023-08-23 | 2023-11-03 | 成都迅翼卫通科技有限公司 | Quick satellite aligning method and device |
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