Method and device for updating circle center of phased-array antenna and phased-array antenna system

Abstract

The invention relates to a circle center updating method and device of a phased-array antenna and a phased-array antenna system. The method comprises the following steps: acquiring a frequency point, an azimuth angle and a pitch angle pointed by a current beam in the process of executing conical scanning by the phased-array antenna, and acquiring a corresponding pitch angle adjustment coefficient table from a pre-constructed antenna frequency point adjustment coefficient mapping table according to the frequency point pointed by the current beam, determining a current conical scanning step length and a deviation angle from a pitch angle adjustment coefficient table, collecting signal intensity of the phased-array antenna moving to each preset position point in the conical scanning execution process, and determining an azimuth angle adjustment value and a pitch angle adjustment value according to the signal intensity of each preset position point, and determining a target beam direction according to the azimuth angle, the pitch angle, the azimuth angle adjustment value and the pitch angle adjustment value, and controlling the phased-array antenna to execute subsequent conical scanning by taking the target beam direction as a circle center. And the tracking precision and the system adaptability of the phased-array antenna in a complex scene are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of phased array antenna conical scanning technology, and in particular to a method, apparatus and system for updating the center of a phased array antenna. Background Technology

[0002] In satellite communication antenna tracking systems, conical scanning is a widely used angle tracking technique. It involves controlling a phased array antenna beam to scan a target satellite in a conical trajectory, detecting target position shifts based on deviations in the received signal amplitude, and then adjusting the beam scanning center to achieve precise alignment. In related technologies, a common fixed-parameter adjustment algorithm is typically used to correct the center position.

[0003] However, this method has obvious limitations. Its adjustment process relies entirely on pre-set fixed parameters, which restricts the tracking accuracy and adaptability, making it difficult to achieve optimal alignment results, especially in complex and ever-changing real-world application scenarios. Summary of the Invention

[0004] Therefore, it is necessary to provide a method, apparatus, computer equipment, computer-readable storage medium, and computer program product for updating the center of a phased array antenna that can improve the tracking accuracy and adaptability of the phased array antenna beam, in order to address the above-mentioned technical problems.

[0005] In a first aspect, this application provides a method for updating the center of a phased array antenna, including:

[0006] Obtain the frequency, azimuth, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna;

[0007] Based on the frequency point of the current beam pointing, obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table;

[0008] Based on the elevation angle, the current conical scan step size and deviation angle are determined from the elevation angle adjustment coefficient table; the deviation angle is the deviation angle of the phased array antenna around the axis.

[0009] During the conical scanning process performed by the phased array antenna, the signal strength of the phased array antenna is collected at each preset position point according to the current conical scanning step size and the deviation angle; the preset position point is a preset signal acquisition point position.

[0010] The azimuth and elevation adjustment values ​​are determined based on the signal strength of each preset location point.

[0011] Based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, the target beam direction is determined, and the phased array antenna is controlled to perform the subsequent conical scan with the target beam direction as the center.

[0012] In one embodiment, the antenna frequency adjustment coefficient mapping table includes an azimuth adjustment coefficient table and an elevation adjustment coefficient table corresponding to each frequency point, and the method for constructing the antenna frequency adjustment coefficient mapping table includes:

[0013] Measure the radiation pattern characteristics of the phased array antenna at each frequency point under the azimuth and elevation angles;

[0014] Based on the radiation pattern characteristics, the linear relationship between the signal strength difference and the deviation angle of the beam pointing of the phased array antenna is obtained by parabolic fitting, and the azimuth adjustment coefficient table and the elevation adjustment coefficient table corresponding to each frequency point are generated.

[0015] The azimuth adjustment coefficient table includes the azimuth adjustment coefficients corresponding to each frequency point, and the elevation adjustment coefficient table includes the elevation adjustment coefficients, conical scan step size, and conical scan deviation angle corresponding to each frequency point.

[0016] In one embodiment, the method for determining the preset location point includes:

[0017] Control the current beam to perform conical scanning motion according to the current conical scanning step size and the deviation angle;

[0018] A preset position point is selected from the four quadrants of a conical cross section of the conical scanning motion.

[0019] In one embodiment, the preset position points include a first preset position point, a second preset position point, a third preset position point, and a fourth preset position point, and the antenna frequency adjustment coefficient mapping table includes an azimuth adjustment coefficient table and an elevation adjustment coefficient table corresponding to each frequency point;

[0020] The step of determining the azimuth adjustment value and the elevation adjustment value based on the signal strength of each preset location point includes:

[0021] The azimuth and elevation signal strengths are determined based on the signal strengths of the first, second, third, and fourth preset locations.

[0022] Based on the frequency and azimuth of the current beam pointing, determine the azimuth adjustment coefficient from the azimuth adjustment coefficient table, and determine the azimuth adjustment value based on the azimuth adjustment coefficient and the azimuth signal strength;

[0023] Based on the frequency and elevation angle of the current beam pointing, the elevation angle adjustment coefficient is determined from the elevation angle adjustment coefficient table, and the elevation angle adjustment value is determined based on the elevation angle adjustment coefficient and the elevation angle signal strength.

[0024] In one embodiment, determining the azimuth signal strength and elevation signal strength based on the signal strength of the first preset location point, the second preset location point, the third preset location point, and the fourth preset location point includes:

[0025] Determine a first sum of the signal strength at the first preset location point and the signal strength at the second preset location point, and determine a second sum of the signal strength at the third preset location point and the signal strength at the fourth preset location point;

[0026] Subtracting the second sum from the first sum yields the azimuth signal strength;

[0027] The signal strength at the first preset location point is determined as a third sum of the signal strength at the fourth preset location point, and the signal strength at the second preset location point is determined as a fourth sum of the signal strength at the third preset location point.

[0028] Subtracting the fourth sum from the third sum yields the pitch angle signal strength.

[0029] In one embodiment, determining the target beam direction based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value includes:

[0030] Add the azimuth adjustment value to the azimuth angle of the current beam to obtain the target azimuth angle; add the elevation adjustment value to the elevation angle of the current beam to obtain the target elevation angle.

[0031] The target beam direction is determined by adjusting the preset maximum limit threshold, the target azimuth angle, and the target elevation angle.

[0032] Secondly, this application also provides a center-update device for a phased array antenna, comprising:

[0033] Angle acquisition module is used to acquire the frequency point, azimuth angle, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna;

[0034] The coefficient table acquisition module is used to obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table according to the frequency point pointed to by the current beam;

[0035] The parameter determination module is used to determine the current conical scanning step size and deviation angle from the elevation angle adjustment coefficient table based on the elevation angle; the deviation angle is the deviation angle of the phased array antenna around the axis;

[0036] The signal acquisition module is used to acquire the signal strength of the phased array antenna as it moves to each preset position point according to the current conical scan step size and the deviation angle during the conical scan process; the preset position point is a preset signal acquisition point position;

[0037] The adjustment value determination module is used to determine the azimuth adjustment value and the elevation adjustment value based on the signal strength of each preset position point;

[0038] The target beam pointing determination module is used to determine the target beam pointing based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, and control the phased array antenna to perform the subsequent conical scan with the target beam pointing as the center.

[0039] Thirdly, this application also provides a controller, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0040] Obtain the frequency, azimuth, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna;

[0041] Based on the frequency point of the current beam pointing, obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table;

[0042] Based on the elevation angle, the current conical scan step size and deviation angle are determined from the elevation angle adjustment coefficient table; the deviation angle is the deviation angle of the phased array antenna around the axis.

[0043] During the conical scanning process performed by the phased array antenna, the signal strength of the phased array antenna is collected at each preset position point according to the current conical scanning step size and the deviation angle; the preset position point is a preset signal acquisition point position.

[0044] The azimuth and elevation adjustment values ​​are determined based on the signal strength of each preset location point.

[0045] Based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, the target beam direction is determined, and the phased array antenna is controlled to perform the subsequent conical scan with the target beam direction as the center.

[0046] Fourthly, this application also provides a phased array antenna system, including the aforementioned phased array antenna and controller.

[0047] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0048] Obtain the frequency, azimuth, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna;

[0049] Based on the frequency point of the current beam pointing, obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table;

[0050] Based on the elevation angle, the current conical scan step size and deviation angle are determined from the elevation angle adjustment coefficient table; the deviation angle is the deviation angle of the phased array antenna around the axis.

[0051] During the conical scanning process performed by the phased array antenna, the signal strength of the phased array antenna is collected at each preset position point according to the current conical scanning step size and the deviation angle; the preset position point is a preset signal acquisition point position.

[0052] The azimuth and elevation adjustment values ​​are determined based on the signal strength of each preset location point.

[0053] Based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, the target beam direction is determined, and the phased array antenna is controlled to perform the subsequent conical scan with the target beam direction as the center.

[0054] Sixthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0055] Obtain the frequency, azimuth, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna;

[0056] Based on the frequency point of the current beam pointing, obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table;

[0057] Based on the elevation angle, the current conical scan step size and deviation angle are determined from the elevation angle adjustment coefficient table; the deviation angle is the deviation angle of the phased array antenna around the axis.

[0058] During the conical scanning process performed by the phased array antenna, the signal strength of the phased array antenna is collected at each preset position point according to the current conical scanning step size and the deviation angle; the preset position point is a preset signal acquisition point position.

[0059] The azimuth and elevation adjustment values ​​are determined based on the signal strength of each preset location point.

[0060] Based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, the target beam direction is determined, and the phased array antenna is controlled to perform the subsequent conical scan with the target beam direction as the center.

[0061] The aforementioned method, apparatus, controller, phased array antenna system, computer-readable storage medium, and computer program product for updating the center of a phased array antenna obtain the frequency, azimuth, and elevation angles of the current beam pointing of the phased array antenna. By adaptively matching the corresponding elevation angle adjustment coefficient table with a pre-constructed antenna frequency adjustment coefficient mapping table, the current conical scanning step size and deviation angle are accurately determined. This effectively overcomes the shortcomings of fixed-parameter adjustment algorithms that cannot adapt to changes in the phased array antenna pattern with frequency and angle. Furthermore, based on the real-time acquisition of signal strength at each preset location point, the azimuth and elevation angle adjustment values ​​are calculated and dynamically updated to determine the target beam pointing. This allows the center correction process of the phased array antenna's conical scanning to adapt to changes in the antenna's operating state in real time, significantly improving tracking accuracy and system adaptability in complex scenarios, increasing tracking efficiency, and achieving faster and more stable automatic satellite signal tracking. Attached Figure Description

[0062] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0063] Figure 1 This is a schematic diagram of a phased array antenna system in one embodiment;

[0064] Figure 2 This is a flowchart illustrating a method for updating the center of a phased array antenna in one embodiment.

[0065] Figure 3 This is a schematic diagram of an antenna frequency adjustment coefficient mapping table in one embodiment;

[0066] Figure 4 This is a flowchart illustrating the method for constructing an antenna frequency adjustment coefficient mapping table in one embodiment;

[0067] Figure 5 This is a schematic diagram of a preset position point on a conical cross section in one embodiment;

[0068] Figure 6 This is a flowchart illustrating the method for determining the azimuth adjustment value and the pitch adjustment value in one embodiment;

[0069] Figure 7This is a structural block diagram of a phased array antenna center update device in one embodiment;

[0070] Figure 8 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0071] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0072] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0073] In related technologies, during the conical scanning process of a phased array antenna (antenna), a common fixed-parameter adjustment algorithm is typically used to correct the center position: firstly, the azimuth error signal is obtained through conical scanning. and pitch error signal Then, using a preset fixed gain factor and a unified formula, the adjustment amounts for azimuth and elevation angles are directly calculated, such as... , ;in , For a fixed gain factor, This is the azimuth adjustment amount. For pitch angle adjustment, and according to and Iteratively update the beam pointing during the conical scan process of the antenna.

[0074] However, the related technology has significant drawbacks: First, its adjustment process relies entirely on pre-set fixed parameters and does not fully consider the dynamic changes of the phased array antenna pattern at different operating frequencies, elevation angles and azimuth angles, which severely limits the tracking accuracy and environmental adaptability, making it difficult to achieve accurate alignment in complex and ever-changing real-world scenarios.

[0075] Secondly, the adjustment efficiency is low. Because the fixed parameter adjustment algorithm ignores the differences in the antenna's radiation pattern at different frequencies, elevation angles, and azimuth angles, it is difficult to accurately control the step size and direction of each adjustment. It often requires multiple iterations to approach the ideal center position, which greatly prolongs the adjustment time and reduces the efficiency of the antenna in tracking satellites.

[0076] Furthermore, over-adjustment issues occur frequently. Due to the lack of adaptation strategies for the changing characteristics of radiation patterns at different angles, fixed parameter adjustment algorithms are prone to making excessive adjustments. Once the adjustment exceeds the appropriate center position, a reverse correction is required, which not only increases the complexity of the adjustment process but may also cause instability in the antenna's operating state, negatively impacting communication quality.

[0077] Furthermore, dynamic tracking capabilities are insufficient. Technical solutions relying on fixed parameters or orbit prediction are highly susceptible to prediction errors in scenarios involving high-speed satellite movement or low-Earth orbit operation, making it difficult to meet real-time tracking requirements.

[0078] Finally, the engineering adaptation costs are high. For different application scenarios such as shipboard and vehicle-mounted systems, the relevant technologies need to be redesigned with new parameters, consuming significant manpower and time, making efficient promotion and application difficult.

[0079] To address the aforementioned technical problems, the phased array antenna center update method provided in this application embodiment can be applied to, for example... Figure 1 The phased array antenna system shown is described. The phased array antenna system 100 includes a phased array antenna 110 and a controller 120. The phased array antenna 110 and the controller 120 are connected via a signal transmission link. The phased array antenna 110 can be used to perform a conical scanning process, and the controller 120 can be used to acquire information such as the current beam pointing frequency, azimuth angle, and elevation angle during the conical scanning process performed by the phased array antenna 110. The controller 120 can store the azimuth angle and elevation angle data through a data storage system.

[0080] In one exemplary embodiment, such as Figure 2 As shown, a method for updating the center of a phased array antenna is provided, which is then applied to... Figure 1 The following explanation uses a phased array antenna system as an example, including steps 201 to 206. Wherein:

[0081] Step 201: During the conical scanning process of the phased array antenna, the frequency, azimuth angle, and elevation angle of the current beam are being pointed to.

[0082] Phased array antennas employ multi-element phase control to achieve rapid beam scanning, offering greater flexibility and response speed compared to mechanically scanned antennas. The conical scanning process refers to the beam scanning a conical trajectory around the target axis, detecting pointing deviations through changes in signal strength. The current beam's pointing frequency is the communication frequency used by the preceding beam, reflecting the phased array antenna's operating frequency and directly affecting its radiation pattern characteristics. Radiation pattern characteristics refer to the distribution of the phased array antenna's ability to radiate or receive electromagnetic waves in different spatial directions, typically described by a radiation pattern. This pattern reflects key performance parameters of the phased array antenna at different angles, such as gain, beamwidth, sidelobe level, and polarization characteristics.

[0083] Azimuth angle refers to the angle at which the phased array antenna beam points in the horizontal plane (usually a plane parallel to the ground). It is the angle formed by rotating clockwise from a reference direction (such as true north or the satellite orbit's reference direction) to the target direction, typically ranging from 0 to 360 degrees. Elevation angle refers to the angle between the phased array antenna beam and the horizontal plane, i.e., the angle at which the antenna tilts upwards or downwards, typically ranging from 0 to 90 degrees (vertically upwards). Azimuth and elevation angles together determine the spatial pointing of the phased array antenna beam and are core parameters for tracking and adjustment. For example, in Ka-band satellite communication, a phased array antenna might perform a conical scan centered at a 30-degree elevation angle and a 120-degree azimuth angle, while the main lobe width of the pattern will change significantly when the frequency is switched to 18 GHz (gigahertz).

[0084] In one embodiment, taking low-orbit satellite tracking as an example, the phased array antenna performs a conical scan at a frequency of 14.5 GHz with an initial beam pointing angle of 45 degrees and an azimuth angle of 60 degrees. The phased array antenna system can monitor the beam pattern characteristics corresponding to this frequency in real time and dynamically associate the scanning parameters at the current azimuth and elevation angles to ensure the matching between signal acquisition and subsequent adjustments.

[0085] In the above embodiments, by acquiring the frequency point, azimuth angle and elevation angle information of the phased array antenna in conical scanning in real time, a precise data basis is provided for the subsequent adaptive adjustment of the center of the target beam pointing of the phased array antenna, laying the foundation for the step size optimization of conical scanning and the selection of signal acquisition points, which is conducive to improving the reliability of target tracking.

[0086] Step 202: Based on the frequency of the current beam pointing, obtain the corresponding elevation angle adjustment coefficient table from the pre-built antenna frequency adjustment coefficient mapping table.

[0087] The pre-constructed antenna frequency adjustment coefficient mapping table is a two-dimensional mapping table pre-established using measured antenna pattern data. It stores the elevation and azimuth adjustment coefficient tables corresponding to each frequency point. Figure 3 As shown, Figure 3This is a schematic diagram of an antenna frequency adjustment coefficient mapping table in one embodiment. The elevation angle adjustment coefficient table can store the conical scan step size, the conical scan deviation angle, and each elevation angle and its corresponding adjustment coefficient. The conical scan step size refers to the angular interval between two adjacent beam pointing adjustments during the conical scan process of the phased array antenna. The conical scan deviation angle refers to the angle between the beam pointing and the antenna's main axis during the conical scan. The adjustment coefficient is a pre-set parameter for each specific elevation angle, used to precisely adjust the beam pointing during the conical scan process. The azimuth angle adjustment coefficient table can store each azimuth angle and its corresponding adjustment coefficient. The adjustment coefficient is a pre-set parameter for each specific azimuth angle, used to precisely adjust the beam pointing during the conical scan process.

[0088] In one embodiment, assuming the phased array antenna system is operating at a certain moment, the current beam is pointing at a frequency of 10 GHz. The pre-built antenna frequency adjustment coefficient mapping table of the phased array antenna system stores the mapping relationship between different frequencies and the corresponding elevation angle adjustment coefficient tables, as shown in Table 1:

[0089] Table 1 Antenna Frequency Adjustment Coefficient Mapping Table

[0090]

[0091] When the phased array antenna system detects and confirms that the current beam pointing frequency is 10GHz, the phased array antenna system searches in the pre-built antenna frequency adjustment coefficient mapping table based on this frequency. Since the antenna frequency adjustment coefficient mapping table clearly marks 10GHz as corresponding to Table B, the phased array antenna system obtains Table B as the currently applicable elevation angle adjustment coefficient table.

[0092] In the above embodiments, a pre-constructed antenna frequency adjustment coefficient mapping table is used to dynamically obtain the corresponding elevation angle adjustment coefficient table according to different frequencies. Since the characteristics of the antenna pattern differ at different frequencies, traditional fixed-parameter algorithms cannot adapt to this change. However, the above embodiments can accurately match the adjustment parameters of the current frequency, compensate for the impact of changes in pattern characteristics on beam pointing, and enable the beam to be more accurately aligned with the target, effectively improving the antenna's tracking accuracy in the vertical direction.

[0093] Step 203: Determine the current conical scan step size and deviation angle from the pitch angle adjustment coefficient table based on the pitch angle.

[0094] The current conical scan step size refers to the angular interval between two adjacent beam pointing adjustments during the current conical scan process of the phased array antenna. The deviation angle is the deviation angle of the antenna around its axis during the conical scan process of the phased array antenna.

[0095] In one embodiment, based on the example of step 202, according to the current beam pointing frequency of 10GHz, the corresponding elevation angle adjustment coefficient table B is obtained from the antenna frequency adjustment coefficient mapping table, the contents of which are shown in Table 2:

[0096] Table 2 Pitch Angle Adjustment Coefficient Table

[0097]

[0098] The phased array antenna system acquires the current elevation angle data in real time. Assuming that the detected elevation angle is 30 degrees, based on the elevation angle adjustment coefficient table shown in Figure 2, the elevation angle of 30 degrees is matched with the data in the elevation angle adjustment coefficient table 2 to obtain the corresponding conical scanning step size of 0.2 degrees and the conical scanning deviation angle of 10 degrees.

[0099] In the above embodiments, by dynamically determining the conical scanning step size and deviation angle from the adjustment coefficient table based on the pitch angle, the scanning accuracy can be significantly improved compared to the traditional fixed parameter scanning method, and the scanning blind zone or signal overlap caused by fixed parameters can be avoided.

[0100] Step 204: Collect the signal strength of each preset position point during the conical scanning process of the phased array antenna, according to the current conical scanning step size and deviation angle.

[0101] Among them, the preset location point is the preset signal acquisition point location. For example, the phased array antenna system acquires the signal strength of each preset location point.

[0102] In one embodiment, based on the example in step 203, during the conical scanning process of the phased array antenna, the conical scanning process is performed with a conical scanning step size of 0.2 degrees and a conical scanning deviation angle of 10 degrees, and the signal strength of the phased array antenna is collected when it moves to each preset position point.

[0103] In the above embodiments, by collecting the signal strength of the phased array antenna at each preset position point according to the dynamically adapted conical scanning step size and deviation angle, the signal characteristics of the target at different scanning positions can be accurately captured, avoiding signal omission or repeated acquisition due to fixed parameters.

[0104] Step 205: Determine the azimuth adjustment value and elevation adjustment value based on the signal strength of each preset location point.

[0105] The azimuth adjustment value refers to the angle correction of the antenna beam in the horizontal direction calculated based on the signal strength collected by the phased array antenna at each preset location point. The elevation adjustment value refers to the angle correction of the antenna beam in the vertical direction calculated based on the signal strength data at each preset location point.

[0106] In one embodiment, the phased array antenna system controls the current beam to perform conical scanning motion according to the current conical scanning step size and deviation angle. It can select a preset position point in each of the four quadrants on a conical cross section of the conical scanning motion to obtain four preset position points. The signal strength of the four preset position points is collected, and then the azimuth adjustment value and elevation adjustment value can be determined based on the signal strength of the four preset position points.

[0107] In the above embodiments, the azimuth and elevation angle adjustment values ​​are determined by analyzing the signal strength at each preset location point. This facilitates the accurate correction of the beam pointing based on the actual distribution characteristics of the signal strength, avoids angle deviations caused by using fixed parameters, and significantly improves the antenna's positioning accuracy for targets in both horizontal and vertical directions.

[0108] Step 206: Determine the target beam direction based on the azimuth angle, elevation angle, azimuth angle adjustment value, and elevation angle adjustment value, and control the phased array antenna to perform subsequent conical scanning with the target beam direction as the center.

[0109] Among them, the target beam pointing refers to the optimal beam pointing coordinates of the phased array antenna in space, which are determined by combining the current azimuth angle, elevation angle, and the azimuth angle adjustment value and elevation angle adjustment value calculated based on the signal strength.

[0110] In one embodiment, during conical scanning, the phased array antenna system first acquires the current azimuth and elevation angles of the antenna as initial pointing parameters. Then, based on the signal strength analysis at each preset location point, it derives azimuth and elevation adjustment values ​​to correct the deviation between the initial pointing and the target's true position. Specifically, the azimuth adjustment value is superimposed on the current azimuth angle, and the elevation adjustment value is superimposed on the current elevation angle to obtain a new angle combination. The spatial direction corresponding to this combination is the target beam pointing.

[0111] The target beam direction serves as the center of the subsequent conical scan, guiding the phased array antenna to re-execute the scanning action at a more precise angle. This ensures that the beam energy is concentrated to cover the target area, improving signal reception or transmission efficiency. It is especially suitable for scenarios such as satellite communication and radar detection that require dynamic target tracking, effectively enhancing the system's continuous target positioning and communication capabilities.

[0112] The aforementioned method for updating the center of a phased array antenna obtains the frequency, azimuth, and elevation angles of the current beam pointing of the phased array antenna, and adaptively matches the corresponding elevation angle adjustment coefficient table with a pre-constructed antenna frequency adjustment coefficient mapping table. This accurately determines the current conical scanning step size and deviation angle, effectively overcoming the shortcomings of fixed parameter adjustment algorithms that cannot adapt to changes in the phased array antenna pattern with frequency and angle. Furthermore, based on the real-time acquisition of signal strength at each preset position point, the azimuth and elevation angle adjustment values ​​are calculated and dynamically updated to determine the target beam pointing. This allows the center correction process of the phased array antenna conical scanning to adapt to changes in the antenna's operating state in real time, significantly improving tracking accuracy and system adaptability in complex scenarios, increasing tracking efficiency, and achieving faster and more stable automatic tracking of satellite signals.

[0113] In an exemplary embodiment, the method for constructing the antenna frequency adjustment coefficient mapping table can be as follows: Figure 4 As shown, Figure 4 This is a flowchart illustrating a method for constructing an antenna frequency adjustment coefficient mapping table in one embodiment; including steps 401-402:

[0114] Step 401: Measure the radiation pattern characteristics of the phased array antenna at each frequency point under the azimuth and elevation angles.

[0115] Among them, the radiation pattern characteristic refers to the distribution characteristics of the ability of a phased array antenna to radiate or receive electromagnetic waves in different spatial directions.

[0116] In one embodiment, it is assumed that the operating frequency range of a certain type of phased array antenna is 8GHz-12GHz, which is divided into 5 frequency points with an interval of 1GHz, namely 8GHz, 9GHz, 10GHz, 11GHz, and 12GHz. At the same time, the azimuth angle measurement range is set to 0-360 degrees with an interval of 10 degrees; the elevation angle measurement range is set to 0-90 degrees with an interval of 5 degrees.

[0117] Before the antenna leaves the factory, technicians use specialized measuring equipment, such as signal generators and spectrum analyzers, to measure the radiation pattern characteristics of each frequency point, azimuth angle, and elevation angle combination. For example, at a frequency of 10 GHz, when the azimuth angle is 30 degrees and the elevation angle is 20 degrees, the antenna beam is scanned, and signal strength data in different directions are recorded to obtain the radiation pattern for that angle combination. This process of obtaining the radiation pattern is repeated, traversing all frequency points (8 GHz-12 GHz), azimuth angles (0-360 degrees), and elevation angles (0-90 degrees), ultimately obtaining a large amount of radiation pattern characteristic data.

[0118] Step 402: Based on the radiation pattern characteristics, obtain the linear relationship between the signal strength difference and the deviation angle of the phased array antenna beam pointing through parabolic fitting, and generate the azimuth adjustment coefficient table and elevation adjustment coefficient table corresponding to each frequency point.

[0119] Based on the example in step 401, the center position of the maximum signal strength is found in the radiation pattern characteristics. Since the conical scanning range of the phased array antenna during tracking is less than 2 degrees, an angular deviation range of ±1 degree (e.g., 19-21 degrees elevation angle, 29-31 degrees azimuth angle) is selected near the center of the maximum signal strength, and parabolic fitting is performed on the signal strength data within this range. Assuming that in the elevation direction, the quadratic polynomial obtained through fitting is y=ax 2 +bx+c, where x is the deviation angle from the center position of the maximum signal strength, and y is the signal strength.

[0120] Calculate the deviation angle between each point and the center of maximum signal strength, as well as the signal strength difference between adjacent points, at 0.2-degree intervals. For example, near an elevation angle of 20 degrees, record the signal strength at positions such as 20 degrees, 20.2 degrees, and 20.4 degrees, and calculate the signal strength difference between adjacent positions. Plot these signal strength differences against the deviation angle, and find that they have an approximately linear relationship. This leads to the deviation angle compensation control formula: Δθ = k × ΔS, where k is the proportional coefficient for adjusting the antenna angle (i.e., the adjustment coefficient), ΔS is the signal difference between the azimuth and elevation angles, and Δθ is the adjustment angle for the azimuth or elevation angle.

[0121] In an exemplary embodiment, the method for generating the azimuth adjustment coefficient table includes: traversing all azimuth angles (0-360 degrees), calculating the adjustment coefficient corresponding to each azimuth angle according to the above linear relationship, and recording it in the azimuth adjustment coefficient table for the 10GHz frequency point. For example, the adjustment coefficient corresponding to an azimuth angle of 30 degrees is 0.8, and the adjustment coefficient corresponding to an azimuth angle of 40 degrees is 0.85, etc.

[0122] In an exemplary embodiment, the method for generating the pitch angle adjustment coefficient table includes: traversing all pitch angles (0-90 degrees), calculating and recording the adjustment coefficients. Simultaneously, based on the degree of fit between the signal variation near the center of maximum signal strength and the parabola, the conical scan step size and deviation angle for different pitch angles are determined. For example, a 20-degree pitch angle corresponds to a conical scan step size of 0.3 degrees and a deviation angle of 12 degrees; a 30-degree pitch angle corresponds to a conical scan step size of 0.2 degrees and a deviation angle of 10 degrees. These parameters are then stored together in the pitch angle adjustment coefficient table for the 10 GHz frequency point.

[0123] Finally, the 10GHz frequency value, along with the corresponding azimuth and elevation adjustment coefficient tables, are stored in a separate antenna frequency adjustment coefficient mapping table. The above steps are repeated to generate and store elevation or azimuth adjustment coefficient tables for other frequencies such as 8GHz, 9GHz, 11GHz, and 12GHz, ultimately constructing a complete coefficient adjustment table system to provide data support for beam pointing adjustments in subsequent antenna operations.

[0124] In the above embodiments, by measuring the radiation pattern characteristics of the phased array antenna at various frequencies, azimuth angles, and elevation angles, and generating an adjustment coefficient table based on parabolic fitting and data analysis, the system can accurately capture the signal strength variation pattern and avoid beam pointing deviation caused by using fixed parameters.

[0125] In an exemplary embodiment, the method for determining the preset position point may include: controlling the current beam to perform conical scanning motion according to the current conical scanning step size and deviation angle, and selecting a preset position point in each of the four quadrants of a conical cross-section of the conical scanning motion. For example, four positions at 45°, 135°, 225°, and 315° on the conical cross-section can be selected as preset position points, such as... Figure 5 As shown, Figure 5 This is a schematic diagram of a preset position point on a conical cross section in one embodiment.

[0126] The four preset position points mentioned above are designated as the first preset position point, the second preset position point, the third preset position point, and the fourth preset position point. Based on this, the azimuth and elevation adjustment values ​​are determined according to the signal strength at each preset position point, as follows: Figure 6 As shown, Figure 6 The following is a flowchart illustrating a method for determining azimuth and pitch adjustment values ​​in one embodiment, including steps 601-603:

[0127] Step 601: Determine the azimuth signal strength and elevation signal strength based on the signal strength of the first preset position point, the second preset position point, the third preset position point, and the fourth preset position point.

[0128] For example, the phased array antenna system collects the signal strength at the first preset location points respectively. Signal strength at the second preset location point Signal strength at the third preset location point and the signal strength at the fourth preset location point .

[0129] In one embodiment, the azimuth signal strength The calculation formula may include:

[0130]

[0131] Pitch angle signal strength The calculation formula may include:

[0132]

[0133] Step 602: Determine the azimuth adjustment coefficient from the azimuth adjustment coefficient table based on the frequency and azimuth of the current beam pointing, and determine the azimuth adjustment value based on the azimuth adjustment coefficient and the azimuth signal strength.

[0134] For example, the azimuth adjustment value = azimuth signal strength * azimuth adjustment coefficient.

[0135] Step 603: Determine the pitch angle adjustment coefficient from the pitch angle adjustment coefficient table based on the current beam pointing frequency and pitch angle, and determine the pitch angle adjustment value based on the pitch angle adjustment coefficient and the pitch angle signal strength.

[0136] For example, the pitch angle adjustment value = pitch angle signal strength * pitch angle adjustment coefficient.

[0137] In the above embodiments, by comprehensively determining the azimuth and elevation signal strengths at four preset location points, the signal distribution characteristics of the antenna in the horizontal and vertical directions can be accurately captured, effectively avoiding interference from single-point data errors and improving the accuracy of signal strength judgment. By combining the current beam pointing frequency, azimuth, and elevation angles with the corresponding adjustment coefficient table, and calculating the azimuth and elevation adjustment values ​​accordingly, the system utilizes pre-constructed antenna pattern characteristic data to ensure that the adjustment parameters are adapted to the antenna performance under different operating conditions. Furthermore, by associating signal strength with adjustment coefficients, it achieves refined and intelligent beam pointing adjustment, reducing adjustment deviations caused by fixed parameters. This allows for rapid response to changes in target position, enhancing the antenna's dynamic tracking capability in complex environments. It also reduces signal loss, optimizes resource allocation, simplifies engineering debugging processes, reduces parameter adaptation costs due to scenario differences, and significantly improves the overall performance and application versatility of the phased array antenna system.

[0138] In an exemplary embodiment, determining the target beam pointing based on the azimuth angle, elevation angle, azimuth adjustment value, and elevation adjustment value may include: adding the azimuth adjustment value to the azimuth angle of the current beam pointing to obtain the target azimuth angle; adding the elevation adjustment value to the elevation angle of the current beam pointing to obtain the target elevation angle; and determining the target beam pointing based on a preset maximum limit adjustment threshold, the target azimuth angle, and the target elevation angle.

[0139] For example, suppose the current phased array antenna beam pointing is: azimuth 30 degrees, elevation 20 degrees. The corresponding azimuth adjustment value calculated in the previous steps is +2 degrees, and the elevation adjustment value is +1.5 degrees. Then, the target azimuth = current azimuth 30 degrees + azimuth adjustment value 2 degrees = 32 degrees; the target elevation = current elevation 20 degrees + elevation adjustment value 1.5 degrees = 21.5 degrees.

[0140] To determine the target beam pointing, the maximum adjustment thresholds for the phased array antenna system are assumed to be ±5 degrees for azimuth and ±3 degrees for elevation. The final target beam pointing is confirmed to be 32 degrees azimuth and 21.5 degrees elevation. Subsequently, the phased array antenna will use this target beam pointing as the center, combined with the conical scanning step size (e.g., 0.3 degrees) and deviation angle (e.g., 12 degrees) obtained from the elevation adjustment coefficient table, to perform a subsequent conical scanning process, achieving more accurate target tracking and signal reception.

[0141] For a target azimuth of 32 degrees, since 32 degrees - 30 degrees = 2 degrees, which is within the maximum azimuth adjustment range of ±5 degrees, the target azimuth is valid. For a target elevation of 21.5 degrees, since 21.5 degrees - 20 degrees = 1.5 degrees, which is within the maximum elevation adjustment range of ±3 degrees, the target elevation is also valid.

[0142] If the calculated target azimuth or elevation angle exceeds the corresponding maximum adjustment threshold, the adjustment value needs to be corrected. For example, if the calculated target azimuth is 38 degrees (exceeding the +5 degree limit), the azimuth adjustment value is corrected to +5 degrees, and the target azimuth is recalculated to be 30 degrees + 5 degrees = 35 degrees. This ensures that the target beam pointing is within a reasonable range, achieving effective target tracking while avoiding antenna instability due to over-adjustment.

[0143] In the above embodiments, by superimposing azimuth and elevation adjustment values ​​on the current beam pointing and combining them with a preset maximum adjustment threshold to determine the target beam pointing, the system can achieve dynamic and precise optimization of the beam pointing based on signal strength analysis results, effectively correct initial pointing deviations, and improve the antenna's tracking accuracy. Furthermore, the maximum adjustment threshold constraint prevents excessive adjustment from causing the beam pointing to exceed a reasonable range, preventing antenna instability or signal loss, enhancing the system's reliability under complex operating conditions, and enabling rapid adaptation to changes in target position. It also reduces invalid scanning losses caused by excessive or insufficient adjustment, improving beam adjustment efficiency and resource utilization. Simultaneously, the unified calculation rules and threshold settings simplify the engineering implementation process, facilitating rapid deployment of the phased array antenna system in different application scenarios, reducing debugging costs, and ensuring stable and efficient operation of the phased array antenna in fields such as satellite communication and radar detection.

[0144] The aforementioned method for updating the center of a phased array antenna obtains the frequency, azimuth, and elevation angles of the current beam pointing of the phased array antenna, and adaptively matches the corresponding elevation angle adjustment coefficient table with a pre-constructed antenna frequency adjustment coefficient mapping table. This accurately determines the current conical scanning step size and deviation angle, effectively overcoming the shortcomings of fixed parameter adjustment algorithms that cannot adapt to changes in the phased array antenna pattern with frequency and angle. Furthermore, based on the real-time acquisition of signal strength at each preset position point, the azimuth and elevation angle adjustment values ​​are calculated and dynamically updated to determine the target beam pointing. This allows the center correction process of the phased array antenna conical scanning to adapt to changes in the antenna's operating state in real time, significantly improving tracking accuracy and system adaptability in complex scenarios, increasing tracking efficiency, and achieving faster and more stable automatic tracking of satellite signals.

[0145] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0146] Based on the same inventive concept, this application also provides a phased array antenna centering update device for implementing the aforementioned phased array antenna centering update method. The solution provided by this device is similar to the implementation described in the above method. Therefore, the specific limitations of one or more phased array antenna centering update device embodiments provided below can be found in the limitations of the phased array antenna centering update method described above, and will not be repeated here.

[0147] In one exemplary embodiment, such as Figure 7 As shown, a center-of-array antenna update device 700 is provided, comprising: an angle acquisition module 710, a coefficient table acquisition module 720, a parameter determination module 730, a signal acquisition module 740, an adjustment value determination module 750, and a target beam pointing determination module 760, wherein:

[0148] Angle acquisition module 710 is used to acquire the frequency point, azimuth angle and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna;

[0149] The coefficient table acquisition module 720 is used to acquire the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table according to the frequency point of the current beam pointing.

[0150] The parameter determination module 730 is used to determine the current conical scanning step size and deviation angle from the elevation angle adjustment coefficient table based on the elevation angle; the deviation angle is the deviation angle of the phased array antenna around the axis;

[0151] The signal acquisition module 740 is used to acquire the signal strength of the phased array antenna as it moves to each preset position point according to the current conical scanning step size and the deviation angle during the conical scanning process; the preset position point is a preset signal acquisition point position;

[0152] The adjustment value determination module 750 is used to determine the azimuth adjustment value and the elevation adjustment value based on the signal strength of each preset position point;

[0153] The target beam pointing determination module 760 is used to determine the target beam pointing based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, and control the phased array antenna to perform the subsequent conical scan with the target beam pointing as the center.

[0154] The aforementioned phased array antenna center-update device, with angle acquisition module 710 acquiring the frequency, azimuth, and elevation angles of the current beam pointing of the phased array antenna, and adaptively matching the corresponding elevation angle adjustment coefficient table with the antenna frequency adjustment coefficient mapping table pre-constructed by coefficient table acquisition module 720, enables parameter determination module 730 to accurately determine the current conical scanning step size and deviation angle. This effectively overcomes the defect that fixed parameter adjustment algorithms cannot adapt to changes in the phased array antenna pattern with frequency and angle, facilitating signal acquisition module 740 to acquire signal strength at each preset position point; further adjustment value determination module 750 calculates azimuth and elevation angle adjustment values ​​based on the real-time acquired signal strength at each preset position point, and target beam pointing determination module 760 updates and determines the target beam pointing. This allows the center-correction process of the phased array antenna conical scanning to adapt to changes in antenna operating status in real time, significantly improving tracking accuracy and system adaptability in complex scenarios, increasing tracking efficiency, and achieving faster and more stable automatic satellite signal tracking.

[0155] In one embodiment, the coefficient table acquisition module 720 is also used to measure the radiation pattern characteristics of the phased array antenna at the azimuth and elevation angles at each frequency point;

[0156] Based on the radiation pattern characteristics, the linear relationship between the signal strength difference and the deviation angle of the beam pointing of the phased array antenna is obtained by parabolic fitting, and the azimuth adjustment coefficient table and the elevation adjustment coefficient table corresponding to each frequency point are generated.

[0157] The azimuth adjustment coefficient table includes the azimuth adjustment coefficients corresponding to each frequency point, and the elevation adjustment coefficient table includes the elevation adjustment coefficients, conical scan step size, and conical scan deviation angle corresponding to each frequency point.

[0158] In one embodiment, the signal acquisition module 740 is further configured to control the current beam to perform conical scanning motion according to the current conical scanning step size and the deviation angle;

[0159] A preset position point is selected from the four quadrants of a conical cross section of the conical scanning motion.

[0160] In one embodiment, the adjustment value determination module 750 is further configured to determine the azimuth signal strength and the elevation signal strength based on the signal strength of the first preset position point, the signal strength of the second preset position point, the signal strength of the third preset position point and the signal strength of the fourth preset position point.

[0161] Based on the frequency and azimuth of the current beam pointing, determine the azimuth adjustment coefficient from the azimuth adjustment coefficient table, and determine the azimuth adjustment value based on the azimuth adjustment coefficient and the azimuth signal strength;

[0162] Based on the frequency and elevation angle of the current beam pointing, the elevation angle adjustment coefficient is determined from the elevation angle adjustment coefficient table, and the elevation angle adjustment value is determined based on the elevation angle adjustment coefficient and the elevation angle signal strength.

[0163] In one embodiment, the adjustment value determination module 750 is further configured to determine a first sum of the signal strength of the first preset location point and the signal strength of the second preset location point, and to determine a second sum of the signal strength of the third preset location point and the signal strength of the fourth preset location point;

[0164] Subtracting the second sum from the first sum yields the azimuth signal strength;

[0165] The signal strength at the first preset location point is determined as a third sum of the signal strength at the fourth preset location point, and the signal strength at the second preset location point is determined as a fourth sum of the signal strength at the third preset location point.

[0166] Subtracting the fourth sum from the third sum yields the pitch angle signal strength.

[0167] In one embodiment, the target beam pointing determination module 760 is further configured to add the azimuth adjustment value to the azimuth angle of the current beam pointing to obtain the target azimuth angle, and add the elevation adjustment value to the elevation angle of the current beam pointing to obtain the target elevation angle;

[0168] The target beam direction is determined by adjusting the preset maximum limit threshold, the target azimuth angle, and the target elevation angle.

[0169] Each module in the aforementioned phased array antenna centering update device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the operations corresponding to each module.

[0170] In one exemplary embodiment, a controller is provided, the internal structure of which can be shown in the following diagram. Figure 8 As shown, the controller includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When the computer program is executed by the processor, it implements a vehicle driving control method.

[0171] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0172] In one exemplary embodiment, a controller is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0173] In one exemplary embodiment, a phased array antenna system is provided, including the phased array antenna and controller described in the above method embodiments.

[0174] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0175] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0176] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0177] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0178] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0179] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for updating the center of a phased array antenna, characterized in that, The method includes: Obtain the frequency, azimuth, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna; Based on the frequency point of the current beam pointing, obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table; Based on the elevation angle, the current conical scan step size and deviation angle are determined from the elevation angle adjustment coefficient table; the deviation angle is the deviation angle of the phased array antenna around the axis. During the conical scanning process performed by the phased array antenna, the signal strength of the phased array antenna is collected at each preset position point according to the current conical scanning step size and the deviation angle; the preset position point is a preset signal acquisition point position. The azimuth and elevation adjustment values ​​are determined based on the signal strength of each preset location point. Based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, the target beam direction is determined, and the phased array antenna is controlled to perform the subsequent conical scan with the target beam direction as the center.

2. The method according to claim 1, characterized in that, The antenna frequency adjustment coefficient mapping table includes an azimuth adjustment coefficient table and an elevation adjustment coefficient table corresponding to each frequency point. The method for constructing the antenna frequency adjustment coefficient mapping table includes: Measure the radiation pattern characteristics of the phased array antenna at each frequency point under the azimuth and elevation angles; Based on the radiation pattern characteristics, the linear relationship between the signal strength difference and the deviation angle of the beam pointing of the phased array antenna is obtained by parabolic fitting, and the azimuth adjustment coefficient table and the elevation adjustment coefficient table corresponding to each frequency point are generated. The azimuth adjustment coefficient table includes the azimuth adjustment coefficients corresponding to each frequency point, and the elevation adjustment coefficient table includes the elevation adjustment coefficients, conical scan step size, and conical scan deviation angle corresponding to each frequency point.

3. The method according to claim 1, characterized in that, The method for determining the preset location point includes: Control the current beam to perform conical scanning motion according to the current conical scanning step size and the deviation angle; A preset position point is selected from the four quadrants of a conical cross section of the conical scanning motion.

4. The method according to claim 1, characterized in that, The preset position points include a first preset position point, a second preset position point, a third preset position point, and a fourth preset position point. The antenna frequency adjustment coefficient mapping table includes an azimuth adjustment coefficient table and an elevation adjustment coefficient table corresponding to each frequency point. The step of determining the azimuth adjustment value and the elevation adjustment value based on the signal strength of each preset location point includes: The azimuth and elevation signal strengths are determined based on the signal strengths of the first, second, third, and fourth preset locations. Based on the frequency and azimuth of the current beam pointing, determine the azimuth adjustment coefficient from the azimuth adjustment coefficient table, and determine the azimuth adjustment value based on the azimuth adjustment coefficient and the azimuth signal strength; Based on the frequency and elevation angle of the current beam pointing, the elevation angle adjustment coefficient is determined from the elevation angle adjustment coefficient table, and the elevation angle adjustment value is determined based on the elevation angle adjustment coefficient and the elevation angle signal strength.

5. The method according to claim 4, characterized in that, The step of determining the azimuth and elevation signal strengths based on the signal strengths of the first, second, third, and fourth preset position points includes: Determine a first sum of the signal strength at the first preset location point and the signal strength at the second preset location point, and determine a second sum of the signal strength at the third preset location point and the signal strength at the fourth preset location point; Subtracting the second sum from the first sum yields the azimuth signal strength; The signal strength at the first preset location point is determined as a third sum of the signal strength at the fourth preset location point, and the signal strength at the second preset location point is determined as a fourth sum of the signal strength at the third preset location point. Subtracting the fourth sum from the third sum yields the pitch angle signal strength.

6. The method according to claim 1, characterized in that, Determining the target beam direction based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value includes: Add the azimuth adjustment value to the azimuth angle of the current beam to obtain the target azimuth angle; add the elevation adjustment value to the elevation angle of the current beam to obtain the target elevation angle. The target beam direction is determined by adjusting the preset maximum limit threshold, the target azimuth angle, and the target elevation angle.

7. A device for updating the center of a phased array antenna, characterized in that, The device includes: Angle acquisition module is used to acquire the frequency point, azimuth angle, and elevation angle of the current beam pointing during the conical scanning process of the phased array antenna; The coefficient table acquisition module is used to obtain the corresponding elevation angle adjustment coefficient table from the pre-constructed antenna frequency adjustment coefficient mapping table according to the frequency point pointed to by the current beam; The parameter determination module is used to determine the current conical scanning step size and deviation angle from the elevation angle adjustment coefficient table based on the elevation angle; the deviation angle is the deviation angle of the phased array antenna around the axis; The signal acquisition module is used to acquire the signal strength of the phased array antenna as it moves to each preset position point according to the current conical scan step size and the deviation angle during the conical scan process; the preset position point is a preset signal acquisition point position; The adjustment value determination module is used to determine the azimuth adjustment value and the elevation adjustment value based on the signal strength of each preset position point; The target beam pointing determination module is used to determine the target beam pointing based on the azimuth angle, the elevation angle, the azimuth angle adjustment value, and the elevation angle adjustment value, and control the phased array antenna to perform the subsequent conical scan with the target beam pointing as the center.

8. A controller comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A phased array antenna system, characterized in that, It includes a phased array antenna and the controller as described in claim 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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