A multi-band phased array antenna two-dimensional beam automatic measurement system and method

Abstract

This invention relates to an automatic two-dimensional beam measurement system and method for multi-band phased array antennas, belonging to the field of phased array measurement technology. The system includes a PC main controller, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and the phased array antenna under test. The automatic beam controller is connected to the PC main controller, the switch, the vector network analyzer, the servo control system, and the phased array antenna under test. The switch is connected to the PC main controller, the vector network analyzer, and the servo control system. The vector network analyzer is also connected to the phased array antenna under test. The servo control system controls the robotic arm, which is equipped with a microwave anechoic chamber feed. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test. This invention only requires completing one full scan within a set range to test the entire two-dimensional phased array antenna beam, greatly shortening the required measurement time.

Description

Technical Field

[0001] This invention relates to an automatic two-dimensional beam measurement system and method for multi-band phased array antennas, belonging to the field of phased array measurement technology. Background Technology

[0002] Current traditional microwave anechoic chamber measurements of phased array antennas, whether for far-field, near-field, or compact-field testing, require setting the measurement angle after the antenna under test is installed. Then, the host computer controls the phased array antenna's beam control position to sequentially measure different beam directions. Based on the measurement results, such as the beam patterns of different beams, a complete test result for the phased array antenna is generated. However, this testing method requires repeated testing of the entire scanning angle for different beam positions, resulting in long testing times, a cumbersome process, and low efficiency. Therefore, this invention is proposed. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides an automatic two-dimensional beam measurement system and method for multi-band phased array antennas. Automatic beam control can be achieved in two ways. When the automatic testing equipment can be connected to the existing anechoic chamber system and networked to control the timing of the existing network analyzer and robotic arm, the automatic beam controller, in conjunction with the vector network analyzer, host computer, and anechoic chamber robotic arm controller, automatically scans the phase of the phased array antenna. The microwave anechoic chamber feed only needs to complete one full scan within a set range to test the entire two-dimensional phased array antenna beam, significantly reducing the required measurement time. When only the automatic beam controller is supported, automatic beam control is achieved by setting the data acquisition interval of the network analyzer in the existing anechoic chamber and the timing of the robotic arm control. Although there may be a delay compared to the first method, it offers advantages such as convenient access and rapid debugging.

[0004] The technical solution of the present invention is as follows:

[0005] An automatic two-dimensional beam measurement system for a multi-band phased array antenna includes a PC main controller, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and the phased array antenna under test. The automatic beam controller is connected to the PC main controller, the switch, the vector network analyzer, the servo control system, and the phased array antenna under test. The switch is connected to the PC main controller, the vector network analyzer, and the servo control system. The vector network analyzer is also connected to the phased array antenna under test. The servo control system controls the robotic arm, on which a microwave anechoic chamber feed is mounted. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test.

[0006] According to a preferred embodiment of the present invention, the phased array antenna under test is in the Ku band (12GHz-18GHz, with a center frequency of 15GHz), the array elements are arranged in a 16*16 configuration, the element spacing is 10mm, and it is measured using a planar near-field method. The feed measurement step size is consistent with the element spacing of 10mm, and the number of measurement points in the x-direction is N. x =40, N measurement points in the y direction y =40.

[0007] The measurement method of the above-mentioned multi-band phased array antenna two-dimensional beam automatic measurement system includes the following steps:

[0008] (1) Before measurement, the PC master controller configures the automatic beam controller according to the frequency point, frequency interval range, number of frequency points, working mode, azimuth and elevation angle range of two-dimensional scanning, angle accuracy, number of controllable channels, attenuation and weighting coefficient of the phased array antenna under test, which is used to control the beam pointing and beamforming of the array sub-units.

[0009] (2) The PC master controller sends control commands to the automatic beam controller. The automatic beam controller sets the antenna frequency range, scanning beam azimuth and elevation angle scanning range, azimuth accuracy, elevation accuracy, frequency interval and frequency sampling point, working mode standby, attenuation is 0dB, no weighting, and calculates CRC8.

[0010] (3) The PC master controller drives the robotic arm to the zero position through the servo control system. The robotic arm transmits angle information back to the PC master controller in real time. At the same time, the PC master controller sends a beam configuration command to the automatic beam controller. After parsing the command, the automatic beam controller transmits it to the phased array antenna under test and loads the configuration command. The phased array antenna under test works in standby mode (the transmission method supports SPI, RS422, and synchronous serial port (timing diagram as shown)). Figure 2 As shown), the automatic beam controller pass-through protocol is consistent with the phased array antenna under test;

[0011] (4) After the microwave anechoic chamber feed moves to the zero position under the control of the robotic arm, it updates the current status to the PC main control and sends a command to the automatic beam controller. The automatic beam controller parses the command. At this time, the servo control system controls the robotic arm to move to the next sampling point. The servo control system sends a trigger pulse signal A and the vector network analyzer sends a ready trigger pulse signal C. If the automatic beam controller receives the trigger pulse signal A and the trigger pulse signal C, it drives the phased array antenna under test to perform beam scanning through the synchronous serial port. If it does not receive the trigger pulse signal, it continues to wait for the pulse signal. After the scanning starts, a beam scanning command is issued and the automatic beam controller sends a trigger signal B to the vector network analyzer.

[0012] After each beam configuration is completed, the phased array antenna TR component register is loaded and the channel beam is updated, triggering the vector network analyzer to acquire data. At this time, if the robotic arm has not moved to the next sampling point, the vector network analyzer continues to acquire data. If it has moved to the next sampling point, the servo control system sends a TTL trigger signal A to the automatic beam controller to determine whether it has moved to the endpoint. If it has not reached the endpoint, the vector network analyzer acquires FIFO data for each beam and reads it back. The average processing time of the data at each sampling point is calculated to determine the total time required for beam acquisition, and then the total time required for the automatic beam testing method is calculated.

[0013] According to a preferred embodiment of the present invention, in step (4), the total time required for beam acquisition is: , among which, T TCP The time T required for each TCP packet to be sent and processed is... pac The time required to send a protocol packet, T reg N represents the time for phase and attenuation transformation of the TR component of the phased array antenna under test. beam Beam scanning combination time;

[0014] According to a preferred embodiment of the present invention, in step (4), the total time required for the automatic beam testing method is: , among which, T mov This represents the movement time of the robotic arm.

[0015] An automatic two-dimensional beam measurement system for a multi-band phased array antenna includes a PC main controller, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and the phased array antenna under test. The PC main controller is connected to both the automatic beam controller and the switch. The automatic beam controller is connected to the phased array antenna under test. The switch is connected to both the vector network analyzer and the servo control system. The vector network analyzer is connected to both the phased array antenna under test and the servo control system. The servo control system is connected to the robotic arm, which is equipped with a microwave anechoic chamber feed. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test.

[0016] The measurement method of the above-mentioned multi-band phased array antenna two-dimensional beam automatic measurement system includes the following steps:

[0017] (1) The PC main controller is connected to the automatic beam controller via a network cable and the initial command is configured. The automatic beam controller sets the antenna frequency range, scanning beam azimuth and elevation angle scanning range, azimuth accuracy, elevation accuracy, frequency interval and frequency sampling point. The working mode is standby, the attenuation is 0dB, no weighting, and CRC8 is calculated.

[0018] (2) Under the control of the robotic arm, the microwave anechoic chamber feed moves to the zero position, updates the current status to the PC main controller, and sends instructions to the automatic beam controller;

[0019] (3) Automatic beam controller parsing instructions: At this time, the servo control system controls the robotic arm to move to the next sampling point. Because it is a delay setting, it cannot be triggered in real time, so more time needs to be reserved. At this time, if the sampling timer has not ended, it continues to wait for the timer to end. If the timer ends, the automatic beam controller controls the phased array antenna under test to start beam scanning. After each beam configuration is completed, the register is loaded and the channel beam is updated, and the vector network is triggered to collect data. The robotic arm reaches the next sampling point during rotation. The TCP instruction of the PC master is sent to the automatic beam controller. The transmission time and the data acquisition time are recorded. Consistent, if the endpoint is not reached, the vector network analyzer collects FIFO data for each beam and reads it back. The time for all beams to complete the scan is... The total time required for the automatic beam testing method is .

[0020] The beneficial effects of this invention are as follows:

[0021] This invention can achieve automatic beam control in two ways. When the automatic test equipment can be connected to the original anechoic chamber system and can network control the timing of the original network analyzer and robotic arm, the automatic beam controller, in conjunction with the vector network analyzer, host computer, and anechoic chamber robotic arm controller, automatically scans the phase of the phased array antenna. The microwave anechoic chamber feed only needs to complete one full scan within a set range to achieve the test of the entire two-dimensional phased array antenna beam, greatly shortening the required measurement time. When only the automatic beam controller is supported, automatic beam control is achieved by setting the data acquisition interval of the original anechoic chamber network analyzer and the timing of the robotic arm control. Although there may be a delay compared to the first solution, it has the advantages of convenient access and rapid debugging. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0023] Figure 2 This is a timing diagram of the synchronous serial port in Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic diagram of the method flow of Embodiment 1 of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0026] Figure 5 This is a schematic diagram of the method flow of Embodiment 2 of the present invention. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto.

[0028] Example 1:

[0029] like Figure 1-3 As shown, this embodiment provides a two-dimensional automatic beam measurement system for a multi-band phased array antenna, including a PC main controller, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and the phased array antenna under test. The automatic beam controller is connected to the PC main controller, the switch, the vector network analyzer, the servo control system, and the phased array antenna under test. The switch is connected to the PC main controller, the vector network analyzer, and the servo control system. The vector network analyzer is also connected to the phased array antenna under test. The servo control system controls the robotic arm, on which a microwave anechoic chamber feed is mounted. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test.

[0030] The automatic beam controller is connected to the switch via Ethernet and communicates with the TCP / IP protocol; it is connected to the phased array antenna under test via SPI / RS422 bus to control the phased array antenna under test; it is connected to the external trigger signal input terminal of the network analyzer via a single IO signal input; the other parts are the original microwave anechoic chamber test system, which mainly includes a vector network analyzer, a robotic arm, a microwave anechoic chamber feed, a PC main controller, etc.

[0031] The phased array antenna under test operates in the Ku band (12GHz-18GHz, with a center frequency of 15GHz). The array elements are arranged in a 16x16 configuration with a spacing of 10mm between elements. Measurements are performed using a planar near-field approach. The feed measurement step size is consistent with the element spacing, both being 10mm. The number of measurement points in the x-direction is N. x =40, N measurement points in the y direction y =40.

[0032] The measurement method of the above-mentioned multi-band phased array antenna two-dimensional beam automatic measurement system includes the following steps:

[0033] (1) Before measurement, the PC master controller configures the automatic beam controller according to the frequency point, frequency interval range, number of frequency points, working mode, azimuth and elevation angle range of two-dimensional scanning, angle accuracy, number of controllable channels, attenuation and weighting coefficient of the phased array antenna under test, which is used to control the beam pointing and beamforming of the array sub-units.

[0034] The instruction format definitions are shown in the table below.

[0035] Table 1: Automatic Beam Controller Configuration Communication Protocol

[0036]

[0037] Among them, Byte 0-1: Frame header is 0x55AA; Byte 2: Signal indicator 0x11 represents the PC main controller sending a command to the automatic beam controller, and the test mode is automatic fast test; Byte 3: Information length code, signal packet length 0x15 (21 bytes); Byte 4-5: Start frequency setting, range 0x0000-0xffff, unit is MHz; Byte 6-7: End frequency setting, range 0x0000-0xffff, unit is MHz; Byte 8: Sets 7 frequency points within the total frequency band, used to select the current frequency point; Byte 9: Operating Mode: 0x00: Reserved, 0x01: Receive, 0x10: Transmit, 0x11: Simultaneous Transmission and Reception; Byte 10: Azimuth (unsigned integer, e.g., Theta range is -45° to 45°, converted to hexadecimal signed number is 0x2d); Byte 11: Elevation (unsigned integer, e.g., Phi range is -45° to 45°, converted to hexadecimal unsigned number is 0x2d); Byte 12: Azimuth Precision (unsigned integer, e.g., setting Theta precision value / 10 = actual Theta precision value, for example, setting the Theta precision value to 0x32 corresponds to a precision value of 5°); Byte 13: Elevation Precision (unsigned integer, e.g., setting the Phi precision value / 10 = actual Phi precision value, for example, setting the Phi precision value to 0x96 corresponds to a precision value of 15°); Bytes 14-15: Channel switch 0x0000-0xffff (supports 0-65535 channel control); Byte16-17: Attenuation (0x0000 for no attenuation) 0x0000-0xffff (actual attenuation value (dB) = set attenuation * 0.25); Byte18: Weighting coefficient, weighting Byte8 corresponds to 4 beam types, 0x00: no weighting, 0x01: reserved, 0x02: reserved, 0x03: indicates omnidirectional mode; Byte19: when the weighting judgment is 0x00, it is the no-weighting mode; when the weighting judgment is 0xFF, it is the weighted mode; Byte20: CRC8 check.

[0038] (2) The PC main controller sends a control command to the automatic beam controller. The command is 0x55AA11152EE0465007FF2D2D32960100000000FA. The automatic beam controller sets the antenna frequency range to 12GHz-18GHz, the azimuth and elevation scanning range to -45° to +45°, the azimuth accuracy to 5°, the elevation accuracy to 15°, the frequency interval to 1000MHz, and the frequency sampling point to... The operating mode is standby, with an attenuation of 0dB and no weighting. The CRC8 calculation result is 0XFA. CRC stands for Cyclic Redundancy Check. First, the data to be sent is encoded into a set of polynomials. Then, a checksum, or CRC code, is added to the data. Finally, after the receiver receives the data, it checks whether the received CRC code is correct. If the received CRC code matches the result calculated by the sender, the data is not corrupted; if they do not match, the data is incorrect and may be damaged. The CRC8 calculation formula is as follows: g(x) = x^8 + x^5 + x^4 + 1, which is calculated by cyclically XORing the highest 8 bits to obtain the final CRC8.

[0039] (3) The PC master controller drives the robotic arm to the zero position through the servo control system. The robotic arm transmits angle information back to the PC master controller in real time. At the same time, the PC master controller sends a beam configuration command to the automatic beam controller. After parsing the command, the automatic beam controller transmits it to the phased array antenna under test and loads the configuration command. The phased array antenna under test works in standby mode (the transmission method supports SPI, RS422, and synchronous serial port (timing diagram as shown)). Figure 2 (As shown), the communication rate is SPI, synchronous serial port supports up to 100MHz, RS422 up to 12MHz, and the automatic beam controller pass-through protocol is consistent with the phased array antenna under test.

[0040] (4) Taking synchronous serial communication as an example, the working frequency is 10MHz, the automatic beam controller supports gigabit Ethernet communication, and each TCP communication packet needs to be sent and processed. After the microwave anechoic chamber feed moves to the zero position under the control of the robotic arm, it updates the current status to the PC main controller and sends the command 0x55AA21152EE0465007FF2D2D32960100000000DD to the automatic beam controller. The automatic beam controller parses the command, and at this time, the servo control system controls the robotic arm to move to the next sampling point. The servo control system sends a trigger pulse signal A, and the vector network analyzer sends a ready trigger pulse signal C. If the automatic beam controller receives trigger pulse signals A and C, it drives the phased array antenna under test to perform beam scanning through the synchronous serial port. If it does not receive them, it continues to wait for pulse signals. The control protocol of the phased array antenna is 127 bits long, and it takes time to complete the transmission of one protocol packet. The time for the phase and attenuation transformation of the TR component of the phased array antenna under test is determined by the phased array antenna under test. The phased array antenna has a scanning azimuth angle range of -45° to 45° and an accuracy of 5°. The pitch angle range is -45° to 45°, with an accuracy of 15°. Calculated beam scanning combination time ;

[0041] After the scan begins, once a beam scan command is issued, the automatic beam controller sends a trigger signal B to the vector network analyzer.

[0042] After each beam configuration is completed, the phased array antenna TR component register is loaded and the channel beam is updated, triggering the vector network analysis (VNA) to acquire data. The VNA uses an internal trigger response time of [time value missing]. (1K bandwidth), if external trigger response time is In this embodiment, external triggering is used. If the robotic arm has not moved to the next sampling point, the vector network analyzer continues to collect data. If it has moved to the next sampling point, the servo control system sends a TTL trigger signal A to the automatic beam controller to determine if it has reached the endpoint. If it has not reached the endpoint, the vector network analyzer collects FIFO data from each beam for readback. The average processing time for each sampling point is calculated. Ignoring the movement time of the robotic arm and ignoring the trigger signal transmission time (less than 500ns), the total time required for beam acquisition is: , among which, T TCP The time T required for each TCP packet to be sent and processed is... pac The time required to send a protocol packet, T reg N represents the time for phase and attenuation transformation of the TR component of the phased array antenna under test. beam Beam scanning combination time;

[0043] Without considering data transmission time, the robotic arm moves at a speed of V. mov =20 points / s, the robotic arm's movement time is Since automated beamforming only requires the robotic arm to move one revolution according to the phased array antenna under test, the total time required for automated beamforming can be calculated as follows: .

[0044] If traditional testing methods are used, the robotic arm needs to move cyclically for each beam under test, and the total time required for acquiring a single beam is... , Compared to traditional testing methods, the testing time is reduced by 455.9 times.

[0045] Example 2:

[0046] like Figure 4-5As shown, this embodiment provides a two-dimensional beam automatic measurement system for a multi-band phased array antenna, including a PC main controller, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and the phased array antenna under test. The PC main controller is connected to the automatic beam controller and the switch. The automatic beam controller is connected to the phased array antenna under test. The switch is connected to the vector network analyzer and the servo control system. The vector network analyzer is connected to the phased array antenna under test and the servo control system. The servo control system is connected to the robotic arm, which is equipped with a microwave anechoic chamber feed. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test.

[0047] Simply connect the automatic beam controller to the switch via a network cable or directly to the PC main control, making the connection simpler and eliminating the need for the original anechoic chamber test system. The other parts are the original microwave anechoic chamber test system. The phased array antenna under test is in the Ku band (12GHz-18GHz, with a center frequency of 15GHz), with array elements arranged in a 16*16 configuration and an element spacing of 10mm, consistent with Example 1.

[0048] The measurement method of the above-mentioned multi-band phased array antenna two-dimensional beam automatic measurement system includes the following steps:

[0049] (1) The PC main controller is connected to the automatic beam controller via a network cable, and the initial command is configured via TCP / IP. The command sent is 0x55AA12152EE0465007FF2D2D32960100000000E8. The automatic beam controller sets the antenna frequency range to 12GHz-18GHz, the scanning beam azimuth and elevation angle scanning range to -45°~+45°, the azimuth accuracy to 5°, the elevation accuracy to 15°, the frequency interval to 1000MHz, and the frequency sampling point to be... The working mode is standby, the attenuation is 0dB, no weighting, and the CRC8 calculation result is 0XE8;

[0050] (2) Under the control of the robotic arm, the microwave anechoic chamber feed moves to the zero position, updates the current status to the PC main controller, and sends the instruction 0x55AA12152EE0465007FF2D2D32960100000000E8 to the automatic beam controller. Each TCP communication packet requires time from sending to processing completion. ;

[0051] (3) Automatic beam controller parsing instructions. At this time, the servo control system controls the robotic arm to move to the next sampling point. Because it is a delay setting, it cannot be triggered in real time, so more time needs to be reserved and set. At this point, if the sampling timing has not ended, it continues to wait for the timing to finish. If the timing has finished, the automatic beam controller controls the phased array antenna under test to begin beam scanning. After each beam configuration is completed, the register is loaded and the channel beam is updated, triggering the vector network analysis (VNA) to acquire data. The VNA uses an internal trigger response time of [time value missing]. (1K bandwidth) As the robotic arm rotates to the next sampling point, the PC's TCP command is sent to the automatic beam controller. The transmission time... Consistent, if the endpoint is not reached, the vector network analyzer collects FIFO data for each beam and reads it back, data processing time The scanning time for all beams is Ignoring data transmission time, the robotic arm's moving speed is... The time is Since automated beamforming only requires the robotic arm to move one revolution according to the phased array antenna under test, the total time required for automated beamforming can be calculated as follows: If traditional testing methods are used Compared to traditional testing methods, the testing time is reduced by 437.4 times.

Claims

1. A measurement method for a two-dimensional beam automatic measurement system for a multi-band phased array antenna, characterized in that, The measurement system includes a PC main controller, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and the phased array antenna under test. The automatic beam controller is connected to the PC main controller, the switch, the vector network analyzer, the servo control system, and the phased array antenna under test. The switch is connected to the PC main controller, the vector network analyzer, and the servo control system. The vector network analyzer is also connected to the phased array antenna under test. The servo control system controls the robotic arm, which is equipped with a microwave anechoic chamber feed. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test. The phased array antenna under test operates in the Ku band, with 16*16 array elements and a spacing of 10mm between elements. Measurements are performed using a planar near-field method. The feed measurement step size is consistent with the element spacing of 10mm, and the number of measurement points in the x-direction is N. x =40, N measurement points in the y direction y =40; The measurement method of the above-mentioned multi-band phased array antenna two-dimensional beam automatic measurement system includes the following steps: (1) Before measurement, the PC master controller configures the automatic beam controller according to the frequency point, frequency interval range, number of frequency points, working mode, azimuth and elevation angle range of two-dimensional scanning, angle accuracy, number of controllable channels, attenuation and weighting coefficient of the phased array antenna under test, which is used to control the beam pointing and beamforming of the array sub-units. (2) The PC master controller sends control commands to the automatic beam controller. The automatic beam controller sets the antenna frequency range, scanning beam azimuth and elevation angle scanning range, azimuth accuracy, elevation accuracy, frequency interval and frequency sampling point, working mode standby, attenuation is 0dB, no weighting, and calculates CRC8. (3) The PC master controller drives the robotic arm to the zero position through the servo control system. The robotic arm transmits the angle information back to the PC master controller in real time. At the same time, the PC master controller sends the beam configuration command to the automatic beam controller. After parsing the command, the automatic beam controller transmits it to the phased array antenna under test and loads the configuration command. The phased array antenna under test works in standby mode. The automatic beam controller transmits the protocol in a consistent manner with the phased array antenna under test. (4) After the microwave anechoic chamber feed moves to the zero position under the control of the robotic arm, it updates the current status to the PC main control and sends a command to the automatic beam controller. The automatic beam controller parses the command. At this time, the servo control system controls the robotic arm to move to the next sampling point. The servo control system sends a trigger pulse signal A and the vector network analyzer sends a ready trigger pulse signal C. If the automatic beam controller receives the trigger pulse signal A and the trigger pulse signal C, it drives the phased array antenna under test to perform beam scanning through the synchronous serial port. If it does not receive the trigger pulse signal, it continues to wait for the pulse signal. After the scanning starts, a beam scanning command is issued and the automatic beam controller sends a trigger signal B to the vector network analyzer. After each beam configuration is completed, the phased array antenna TR component register is loaded and the channel beam is updated, triggering the vector network analyzer to acquire data. At this time, if the robotic arm has not moved to the next sampling point, the vector network analyzer continues to acquire data. If it has moved to the next sampling point, the servo control system sends a TTL trigger signal A to the automatic beam controller to determine whether it has moved to the endpoint. If it has not reached the endpoint, the vector network analyzer acquires FIFO data for each beam and reads it back. The average processing time of the data at each sampling point is calculated to determine the total time required for beam acquisition, and then the total time required for the automatic beam testing method is calculated.

2. The measurement method of the two-dimensional beam automatic measurement system for a multi-band phased array antenna as described in claim 1, characterized in that, In step (4), the total time required for beam acquisition is: ； Among them, T TCP The time T required for each TCP packet to be sent and processed is... pac The time required to send a protocol packet, T reg N represents the time for phase and attenuation transformation of the TR component of the phased array antenna under test. beam N is the beam scanning combination time. frep For frequency sampling points, T FIFO T represents the data processing time. trig For external trigger response time.

3. The measurement method of the two-dimensional beam automatic measurement system for a multi-band phased array antenna as described in claim 2, characterized in that, In step (4), the total time required for the automatic beam testing method is: ； Among them, T mov This represents the movement time of the robotic arm.

4. A measurement method for a two-dimensional beam automatic measurement system for a multi-band phased array antenna, characterized in that, The measurement system includes a PC main control unit, an automatic beam controller, a vector network analyzer, a switch, a servo control system, a robotic arm, a microwave anechoic chamber feed, and a phased array antenna under test. The PC main control unit is connected to the automatic beam controller and the switch. The automatic beam controller is connected to the phased array antenna under test. The switch is connected to the vector network analyzer and the servo control system. The vector network analyzer is connected to the phased array antenna under test and the servo control system. The servo control system is connected to the robotic arm, which is equipped with a microwave anechoic chamber feed. The signal from the microwave anechoic chamber feed flows to the phased array antenna under test. The measurement method of the above-mentioned multi-band phased array antenna two-dimensional beam automatic measurement system includes the following steps: (1) The PC main controller is connected to the automatic beam controller via a network cable and the initial command is configured. The automatic beam controller sets the antenna frequency range, scanning beam azimuth and elevation angle scanning range, azimuth accuracy, elevation accuracy, frequency interval and frequency sampling point. The working mode is standby, the attenuation is 0dB, no weighting, and CRC8 is calculated. (2) Under the control of the robotic arm, the microwave anechoic chamber feed moves to the zero position, updates the current status to the PC main controller, and sends instructions to the automatic beam controller; (3) Automatic beam controller parsing instructions: At this time, the servo control system controls the robotic arm to move to the next sampling point. Because it is a delay setting, it cannot be triggered in real time, so more time needs to be reserved. At this time, if the sampling timer has not ended, it continues to wait for the timer to end. If the timer ends, the automatic beam controller controls the phased array antenna under test to start beam scanning. After each beam configuration is completed, the register is loaded and the channel beam is updated, and the vector network is triggered to collect data. The robotic arm reaches the next sampling point during rotation. The TCP instruction of the PC master is sent to the automatic beam controller. The transmission time and T TCP Consistent, if the endpoint is not reached, the vector network analyzer collects FIFO data for each beam and reads it back. The time for all beams to complete the scan is: ； Among them, T TCP The time T required for each TCP packet to be sent and processed is... pac The time required to send a protocol packet, T reg N represents the time for phase and attenuation transformation of the TR component of the phased array antenna under test. beam N is the beam scanning combination time. frep For frequency sampling points, T FIFO For data processing time, To allow time, T NA N is the internal trigger response time. x N represents the number of measurement points in the x-direction. y The number of measurement points in the y-direction; The total time required for the automatic beam testing method is ; Among them, T mov This represents the movement time of the robotic arm.

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