A Phased Array Antenna Calibration Method, System and Storage Medium

Abstract

The present invention relates to the technical field of antenna data measurement, and specifically relates to a phased array antenna calibration method, which can obtain input parameters, set the scanning mode of a vector network analyzer to a segmented scanning mode, and set parameters; sequentially traverse and test each frequency point number under each vector in each channel, and obtain and store the amplitude and phase values radiated by each frequency point number in each channel; perform vector synthesis on the data of all frequency point numbers in each channel through the PhaseToggle algorithm to obtain the final amplitude and final phase values in each channel. It can be understood that the technical solution shown in the present invention utilizes the segmented trigger mode set by the vector network analyzer and its characteristics of high precision, high sensitivity, and programmability to achieve automatic parameter configuration and high-efficiency data acquisition. At the same time, the PhaseToggle algorithm is adopted to reduce the signal coupling problem between channels and ensure the accuracy of the final calibration data.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna data measurement, and in particular to a phased array antenna calibration method, system and storage medium. Background Art

[0002] In a phased array antenna wave control system, a distributed algorithm is often used. The basic idea of the distributed algorithm is that the wave control motherboard receives control instructions from the radar subsystem, and the sub-array operation processing module calculates the wave control code, i.e., the amplitude-phase code, in real time according to the control instructions. To calculate the wave control code, a theoretical phase calibration code, i.e., amplitude-phase compensation data, is required. In actual engineering implementation, due to conditions such as assembly and processing technology, there will be certain amplitude gain and phase offset inconsistencies between array element channels, and phased array antennas are very sensitive to channel inconsistencies. During system design, this inconsistency data is processed into amplitude-phase compensation data to reduce its impact on the performance of the phased array antenna. This data needs to be calibration amplitude-phase compensation data obtained through actual acquisition by the upper computer and algorithm processing in a standard anechoic chamber environment.

[0003] During the calibration process of the existing method, it is necessary to normalize each channel unit. While ensuring that the unit remains unchanged, further adjustment and analysis of the amplitudes of other units are carried out (the finally obtained code is the amplitude compensation code), and at the same time, the theoretical phase values of each unit are ensured to be 0 (the finally obtained code is the phase compensation code). Therefore, during the adjustment, it is necessary to ensure that the phases of each unit are in the same period so as to ensure that the adjusted data is as accurate as possible. However, due to the device differences between each unit and module, the actual calibration result may not be as good as the theoretical value or the target value, so continuous calibration verification or iterative calibration may be required, and the time for this calibration process is relatively long.

[0004] Therefore, at present, large phased array antennas have a large amount of test data, slow verification speed, and low accuracy of verification results. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a phased array antenna calibration method, system and storage medium to solve the problems of large amount of test data, slow verification speed and low accuracy of verification results in current large phased array antennas in the prior art.

[0006] According to the first aspect of the embodiments of the present invention, a phased array antenna calibration method is provided, including:

[0007] Obtain input parameters, set the scanning mode of the vector network analyzer to the segmented scanning mode, and set the segmented scanning mode parameters;

[0008] Using the set segmented scanning mode, traverse and test each frequency point number under each vector under each channel in sequence. The vector network analyzer acquires and stores the amplitude and phase values radiated by each frequency point number under each channel.

[0009] After all the frequency point number data is stored, perform vector synthesis on the data of all frequency point numbers under each channel through the PhaseToggle algorithm to obtain the final amplitude and final phase values under each channel.

[0010] Preferably, the parameters for setting the segmented scanning mode include:

[0011] Set the segmented scanning quantity of the vector network analyzer according to the vector synthesis method;

[0012] Set the start frequency, end frequency, and the quantity of frequency point numbers for each segment in the segmented scanning of the vector network analyzer;

[0013] Configure the inside of the vector network analyzer to the manual point trigger mode.

[0014] Preferably, traversing and testing each frequency point number under each vector under each channel in sequence includes:

[0015] S21. Set the initial channel serial number to 0;

[0016] S22. Judge whether the current channel serial number is less than the channel quantity. If so, execute step S23; if not, complete the test;

[0017] S23. Perform test settings on the current channel. At the same time, set the initial vector serial number to 0;

[0018] S24. Judge whether the current vector serial number is less than the vector quantity. If so, execute step S25; if not, execute step S27;

[0019] S25. Starting from the frequency point number serial number 0, sequentially acquire and store the amplitude and phase values radiated by each frequency point number until the frequency point number serial number is greater than or equal to the frequency point number quantity, and then execute step S26;

[0020] S26. Increment the current vector serial number by 1, and then turn to execute step S24;

[0021] S27. Increment the current channel serial number by 1, and then turn to execute step S22.

[0022] Preferably, in step S27, before incrementing the current channel serial number by 1, it further includes:

[0023] Collect the amplitude and phase values of all frequency point numbers under the current channel stored in the vector network analyzer;

[0024] The amplitude and phase values of all frequency points are used for vector synthesis to obtain the final amplitude and final phase values of all frequency points in a single channel.

[0025] Preferably, in step S23, test settings are performed on the current channel, including:

[0026] Send a power-on command to the wave control motherboard to power on the current channel and power off other channels.

[0027] Control the probe on the scanning frame to move directly above the current channel.

[0028] Preferably, in step S25, the amplitude and phase values radiated by each frequency point are acquired and stored, including:

[0029] Control the phase shifter and attenuator of the TR module under the current channel.

[0030] Send a manual trigger command to the vector network analyzer, so that when the vector network analyzer receives the manual trigger command, it stores the amplitude and phase values radiated by the current frequency point under the current channel.

[0031] Preferably, the obtaining of the input parameters includes:

[0032] Obtain the amplitude-phase compensation data after analysis and flat compensation, the number of test frequency points to be reverse-beaten, the number of vector syntheses, the corresponding coordinate points of each channel on the scanning frame, and the test channel list.

[0033] According to the second aspect of the embodiments of the present invention, a phased array antenna calibration system is provided, including:

[0034] An upper computer and a vector network analyzer, the upper computer is connected to the vector network analyzer;

[0035] The upper computer is used to execute the method described in any one of the above.

[0036] According to the third aspect of the embodiments of the present invention, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the method described in any one of the above is implemented.

[0037] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0038] It can be understood that the technical solution shown in the present invention can obtain input parameters, set the scanning mode of the vector network analyzer to the segmented scanning mode, and set parameters; traverse and test each frequency point number under each vector under each channel in turn, and obtain and store the amplitude and phase values radiated by each frequency point number under each channel; perform vector synthesis on the data of all frequency point numbers under each channel through the PhaseToggle algorithm to obtain the final amplitude and final phase values under each channel. It can be understood that the technical solution shown in the present invention can realize automatic parameter configuration and high-efficiency data acquisition by using the segmented trigger mode set by the vector network analyzer and its characteristics of high precision, high sensitivity and programmability. At the same time, the PhaseToggle algorithm is adopted to reduce the signal coupling problem between channels and ensure the accuracy of the final calibration data.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0041] Figure 1 is a distribution diagram of the phased array antenna design module;

[0042] Figure 2 is a schematic diagram of the steps of a phased array antenna calibration method shown according to an exemplary embodiment;

[0043] Figure 3 is a schematic diagram of the traversal test process shown according to an exemplary embodiment;

[0044] Figure 4 is a schematic diagram of the segmented trigger channel backscatter process shown according to an exemplary embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are only examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0046] The phased array antenna is developed from the array antenna and mainly relies on phase changes to achieve the movement or scanning of the antenna beam pointing in space. The phased array antenna is composed of multiple antenna elements, also known as radiators. The antenna element can be a single waveguide horn antenna, dipole antenna, patch antenna, etc. A phase shifter is provided at the rear end of each antenna element to change the phase relationship of the signals between the elements, and the amplitude change of the signal is achieved through a power distribution / summing network or an attenuator. The structural distribution of the phased array antenna design module is as shown in Figure 1 shown.

[0047] The software of the phased array antenna near-field test system (hereinafter referred to as the upper computer) uses the test main control computer as the operating platform and usually includes: a servo control software package, a beam control software package, a data sampling software package, and a data analysis software package. These four software packages usually include several functional modules.

[0048] In the existing near-field calibration work, the most time-consuming step is the channel backscattering verification. Because after initially obtaining the amplitude-phase compensation data, it is necessary to use the upper computer to send this data to the corresponding channel, and then use the vector network analyzer to collect and verify whether the compensated data reaches the compensation target. This process is called "channel backscattering". The data after backscattering is usually used for secondary or multiple iterative calibrations. This process has a great demand for improving the overall calibration test efficiency. The format of the amplitude-phase compensation data is a two-dimensional table, with the horizontal coordinate being the frequency point and the vertical coordinate being the channel number. The corresponding data in the table is the amplitude compensation data / phase compensation data. The formats of the amplitude-phase compensation data are shown in Table 1 and Table 2. Table 1 is the format of the amplitude compensation data, and Table 2 is the format of the phase compensation data.

[0049] Table 1

[0050] Channel number / Frequency number F1 F2 F3 The Nth frequency point 1 Amplitude code 1 Amplitude code 2 Amplitude code 3 Amplitude code N 2 … … … … 3 … … … … … … … … … The Kth channel … … … …

[0051] Table 2

[0052] Channel number / Frequency number F1 F2 F3 The Nth frequency point 1 Phase code 1 Phase code 2 Phase code 3 Phase code N 2 … … … … 3 … … … … … … … … … The Kth channel … … … …

[0053] The present invention adds the PhaseToggle algorithm during the single-channel single-frequency point backscattering process to reduce the coupling effect between channels. That is, under the single-channel single-frequency point, it is necessary to configure four states of adding 0°, 90°, 180°, and 270° to the original phase compensation data respectively, and simultaneously collect the amplitude-phase data in each corresponding state for the algorithm to synthesize the final amplitude and phase values.

[0054] The specific technical solution of the present invention is as follows:

[0055] In one embodiment, Figure 2 is a schematic diagram of the steps of a phased array antenna calibration method shown according to an exemplary embodiment. Refer to Figure 2 , a phased array antenna calibration method is provided, including:

[0056] Step S1: Obtain input parameters, set the scanning mode of the vector network analyzer to the segmented scanning mode, and set the segmented scanning mode parameters.

[0057] Step S2: Using the set segmented scanning mode, sequentially perform traversal tests on each frequency point number under each vector under each channel. The vector network analyzer obtains and stores the amplitude and phase values radiated by each frequency point number under each channel.

[0058] Step S3: After all the frequency point number data is stored, perform vector synthesis on the data of all frequency point numbers under each channel through the PhaseToggle algorithm to obtain the final amplitude and final phase values under each channel.

[0059] It can be understood that the technical solution shown in this embodiment can obtain input parameters, set the scanning mode of the vector network analyzer to the segmented scanning mode, and set parameters; sequentially perform traversal tests on each frequency point number under each vector under each channel, obtain and store the amplitude and phase values radiated by each frequency point number under each channel; perform vector synthesis on the data of all frequency point numbers under each channel through the PhaseToggle algorithm to obtain the final amplitude and final phase values under each channel. It can be understood that the technical solution shown in this embodiment utilizes the segmented trigger mode set by the vector network analyzer and its characteristics of high precision, high sensitivity, and programmability to achieve automated parameter configuration and high-efficiency data acquisition. At the same time, the PhaseToggle algorithm is used to reduce the signal coupling problem between channels and ensure the accuracy of the final calibration data.

[0060] It should be noted that in step S1, the obtaining of the input parameters includes:

[0061] Obtain the amplitude-phase compensation data after analysis and leveling, the number of test frequency point numbers to be reversed, the number of vector syntheses, the coordinate points corresponding to each channel on the scanning rack, and the test channel list.

[0062] In specific practice, the upper computer needs to obtain the above-mentioned input parameters and complete calibration using the above-mentioned input parameters. After obtaining the input parameters, set the scanning mode of the vector network analyzer to the segmented scanning mode and set the segmented scanning mode parameters at the same time. The vector network analyzer generally supports linear scanning mode, logarithmic scanning mode, segmented scanning mode, and CW scanning mode.

[0063] It should be noted that setting the segmented scan mode parameters includes: setting the number of segmented scans of the vector network analyzer according to the vector synthesis method; setting the start frequency, end frequency, and the number of frequency points for each segment in the segmented scan of the vector network analyzer; and configuring the internal of the vector network analyzer to the manual point trigger mode.

[0064] In specific practice, the number of segmented scans of the vector network analyzer is set according to the vector synthesis method, and the number can be n. For example, only 1 segment needs to be set for single vector synthesis, 2 segments for two-way vector synthesis, and so on. Configure the internal of the vector network analyzer to the manual point trigger mode. In this mode, a manual trigger command can be sent to the vector network analyzer through the host computer. After receiving it, the vector network analyzer records the amplitude and phase values at the current time point.

[0065] It should be noted that referring to Figure 3 , in step S2, each frequency point under each vector under each channel is traversed and tested in sequence, including:

[0066] S21. Set the initial channel number to 0.

[0067] S22. Determine whether the current channel number is less than the number of channels. If so, execute step S23; if not, the test is completed.

[0068] S23. Perform test settings on the current channel. At the same time, set the initial vector number to 0.

[0069] S24. Determine whether the current vector number is less than the number of vectors. If so, execute step S25; if not, execute step S27.

[0070] S25. Starting from the frequency point number 0, sequentially obtain and store the amplitude and phase values radiated by each frequency point until the frequency point number is greater than or equal to the number of frequency points, and then execute step S26.

[0071] S26. Increment the current vector number by 1 and then turn to execute step S24.

[0072] S27. Increment the current channel number by 1 and then turn to execute step S22.

[0073] It should be noted that in step S27, before incrementing the current channel number by 1, it also includes: collecting the amplitude and phase values of all frequency points under the current channel stored in the vector network analyzer; and performing vector synthesis using the amplitude and phase values of all frequency points to obtain the final amplitude and final phase values of all frequency points for a single channel.

[0074] In specific practice, after collecting all the frequency points for each channel, a vector synthesis can be performed on the current channel. The vector synthesis is carried out using the PhaseToggle algorithm, which is a genetic algorithm. This can minimize the coupling effect between channels and obtain the standard amplitude and phase values for each frequency point of each channel.

[0075] It should be noted that in step S23, the test settings for the current channel include: sending a power-on command to the wave control motherboard to power on the current channel and power off other channels; controlling the probe on the scanning frame to move directly above the current channel.

[0076] It should be noted that in step S25, obtaining and storing the amplitude and phase values radiated by each frequency point includes: controlling the phase shifter and attenuator of the TR module in the current channel; sending a manual trigger command to the vector network analyzer so that when the vector network analyzer receives the manual trigger command, it stores the amplitude and phase values radiated by the current frequency point in the current channel.

[0077] In specific practice, before data collection, it is necessary to control the phase shifter and attenuator of the TR module in the corresponding channel in sequence. After each control of the phase shifter and attenuator of the TR module, the host computer sends a manual trigger command to the vector network analyzer, and the vector network analyzer will store the amplitude and phase values radiated at the corresponding frequency point of the corresponding channel.

[0078] Taking the four-vector synthesis method as an example, the schematic diagram of the segmented trigger channel reverse strike process is as Figure 4 shown. In Figure 4 , since the example process is the four-vector synthesis method. When controlling the phase shifter and attenuator, the attenuation code is the compensation code for the current channel and current frequency point; the four-vector synthesis requires collecting amplitude-phase data of four phase states, namely the phase compensation angles p, p + 90, p + 180, p + 270, and the amplitude code always uses the analyzed compensation data. During data collection, the two windows of the vector network analyzer will respectively display the amplitude / phase values corresponding to all frequency points under all vectors.

[0079] It can be understood that according to different requirements, this method is not limited to storing only single-vector (1 set of data), two-vector (2 sets of data), or four-vector (4 sets of data). According to theoretical calculations, the more test points there are, the higher the efficiency of this method in actual tests.

[0080] Currently, the method of storing up to four vectors on the vector network analyzer and then collecting data is considered based on the user experience of being able to observe the test results more promptly. In relatively mature and stable products, the method of storing more groups of data on the vector network analyzer and then reading them together can be adopted. Combining different test processes, the data collection and storage can reach more than 1000 points (and there can be higher improvements according to the performance of the vector network analyzer), which can effectively improve the production test efficiency.

[0081] Compared with the traditional test process, this method effectively reduces the number of times of collecting vector network data and greatly reduces the time of data collection.

[0082] In the phased array antenna calibration method of the present invention, there are two windows in the vector network analyzer. One records amplitude data and the other records phase data. According to the number of test vectors, set the number of segment scans in the window, set the frequency scan range of each segment, and set the vector network trigger mode to manual point trigger. During the test, the host computer sends a trigger signal to the vector network, and the vector network records the data of a single trigger record (the two windows trigger and record synchronously). After the amplitude and phase control and data storage of all vectors and all frequency points in a single channel are completed, the host computer reads all the data on the vector network for vector synthesis calculation. According to this method in actual testing, taking 512 channels, 51 frequency points, and four-vector collection as an example, only 512 * 2 vector network view selection instructions and data reading instructions need to be sent to the vector network, and another 51 * 512 * 4 trigger signal instructions need to be sent to the vector network. Similarly, keeping the communication time of the same instructions in the traditional method the same, the response time of a single view selection instruction is 5 ms, the data reading response time is 15 ms, and the trigger and waiting time is 15 ms. Then the total time consumed by the host computer to send instructions to the vector network and receive data in the whole test is calculated as follows:

[0083] 512 * 2 * (5 + 15) + 51 * 512 * 4 * 15 = 1587200 ms

[0084] It is about 26.45 minutes, as shown in Table 3 in detail.

[0085] Table 3

[0086] Instruction name Response time for a single instruction (ms) Total number of transmissions required for the entire test Total time (ms) Switch view 5 1024 5120 Trigger 15 104448 1566720 Data reading 15 1024 15360 1587200

[0087] Therefore, compared with the time consumption of the traditional method for the same test volume (see Table 4), this solution greatly reduces the time consumption of switching views and data reading, and eliminates the time consumption of separately setting the CW frequency. The communication time between the host computer and the vector network in the solution of the present invention is reduced by 51.8 minutes as a whole compared with the old method, and the time consumption is reduced by 66%.

[0088] Table 4

[0089] Instruction name Response time for a single instruction (ms) Total number of transmissions required for the entire test Total time (ms) Switch view 5 52224 261120 CW frequency setting 80 26112 2088960 Trigger 15 104448 1566720 Data reading 15 52224 783360 4700160

[0090] For the phased array antenna calibration method adopting this solution, it can be further expanded according to the actual antenna measurement frequency range and the performance of the vector network analyzer in the future, while the traditional method is limited to single-frequency point switching tests. The tester of this solution can intuitively observe the product test status, discover abnormalities in a timely manner, and improve the test efficiency.

[0091] According to the second aspect of the embodiments of the present invention, a phased array antenna calibration system is provided, including:

[0092] A host computer and a vector network analyzer, the host computer is connected to the vector network analyzer;

[0093] The host computer is used to execute the method described in any one of the above.

[0094] According to the third aspect of the embodiments of the present invention, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the method described in any one of the above is implemented.

[0095] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content in other embodiments.

[0096] It should be noted that in the description of the present invention, terms such as "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality" refers to at least two.

[0097] Any process or method description in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the technical field to which the embodiments of the present invention belong.

[0098] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application specific integrated circuits with appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0099] Those of ordinary skill in the art can understand that all or part of the steps carried by the method of the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0100] In addition, in each embodiment of the present invention, each functional unit can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. When the above integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0101] The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disk, etc.

[0102] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0103] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A phased array antenna calibration method, characterized in that, Including: Obtain input parameters, set the scanning mode of the vector network analyzer to the segmented scanning mode, and set the segmented scanning mode parameters; Utilize the set segmented scanning mode to sequentially perform traversal tests on each frequency point number under each vector in each channel. Among them, each vector corresponds to the amplitude and phase values of the same frequency point under preset different phase states, and the vector network analyzer acquires and stores the amplitude and phase values radiated by each frequency point number under each channel; After all the frequency point number data is stored, perform vector synthesis on the data of all frequency point numbers under each channel through the PhaseToggle algorithm to obtain the final amplitude and final phase values under each channel.

2. The phased array antenna calibration method according to claim 1, wherein The setting of the segmented scanning mode parameters includes: Set the segmented scanning quantity of the vector network analyzer according to the vector synthesis method; Set the starting frequency, ending frequency, and the quantity of frequency point numbers in each segment during the segmented scanning of the vector network analyzer; Configure the inside of the vector network analyzer to the manual point trigger mode.

3. The phased array antenna calibration method according to claim 2, wherein Sequentially performing traversal tests on each frequency point number under each vector in each channel includes: S21. Set the initial channel serial number to 0; S22. Determine whether the current channel serial number is less than the channel quantity. If so, execute step S23; if not, complete the test; S23. Perform test settings on the current channel, and at the same time, set the initial vector serial number to 0; S24. Determine whether the current vector serial number is less than the vector quantity. If so, execute step S25; if not, execute step S27; S25. Starting from the frequency point number serial number of 0, sequentially acquire and store the amplitude and phase values radiated by each frequency point number until the frequency point number serial number is greater than or equal to the frequency point number quantity, and then execute step S26; S26. Increment the current vector serial number by 1, and then turn to execute step S24; S27. Increment the current channel serial number by 1, and then turn to execute step S22.

4. The phased array antenna calibration method according to claim 3, wherein In step S27, before incrementing the current channel serial number by 1, it further includes: Collect the amplitude and phase values of all frequency point numbers under the current channel stored in the vector network analyzer; Perform vector synthesis using the amplitude and phase values of all frequency point numbers to obtain the final amplitude and final phase values of all frequency point numbers of a single channel.

5. The phased array antenna calibration method according to claim 3, wherein In step S23, performing test settings on the current channel includes: Send a power-on instruction to the wave control motherboard to enable the wave control motherboard to power on the current channel and power off other channels; Control the probe on the scanning rack to move directly above the current channel.

6. The phased array antenna calibration method according to claim 3, wherein In step S25, acquiring and storing the amplitude and phase values radiated by each frequency point number includes: Control the phase shifter and attenuator of the TR module under the current channel; Send a manual trigger instruction to the vector network analyzer so that when the vector network analyzer receives the manual trigger instruction, it stores the amplitude and phase values radiated by the current frequency point number under the current channel.

7. The phased array antenna calibration method according to claim 1, characterized in that The obtaining of the input parameters includes: Obtain the amplitude-phase compensation data after analysis and flat compensation, the quantity of test frequency point numbers to be replayed, the vector synthesis quantity, the coordinate points corresponding to each channel on the scanning rack, and the test channel list.

8. A phased array antenna calibration system, characterized in that Including: A host computer and a vector network analyzer, the host computer being connected to the vector network analyzer; The host computer is configured to execute the method according to any one of claims 1 to 7.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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