Static detection device and method for phased array radar system

Abstract

The present invention discloses a static detection device and method for a phased array radar system, wherein the device comprises a host computer, a power supply, a signal source, a spectrum analyzer, a wave control power supply board, an antenna subarray system, a transmitting antenna and a receiving antenna; wherein the host computer is respectively connected to the power supply, the spectrum analyzer and the signal source, and the host computer is also connected to the wave control power supply board through a low voltage differential signal; the power supply is also respectively connected to the spectrum analyzer, the signal source and the wave control power supply board; the antenna subarray system is respectively connected to the transmitting antenna wave control power supply board and the signal source; the spectrum analyzer is also connected to the receiving antenna; by arranging the wave control power supply board, the power supply and the host computer, automatic detection of the antenna subarray system is realized, manual testing is avoided, labor costs are saved, and the test precision is improved to ensure the accuracy of the test.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency radar, and in particular to a static detection device and method for a phased array radar system. Background Art

[0002] As a new type of radar, active phased array radar has the characteristics of high precision pointing, strong anti-interference ability, and high reliability. Compared with traditional mechanical scanning radar, it also has the advantages of no need for a servo turntable, fast scanning speed, and simultaneous multi-target detection. The antenna array of active phased array radar is generally composed of multiple antenna units arranged according to certain rules, and each antenna unit is equipped with corresponding phase shifter and attenuator control. When working, it is necessary to control all phase shifters and attenuators separately according to the phase and amplitude values ​​corresponding to the beam pointing, so a beam control system is required to calculate and control the phase shift value and attenuation value. The number of antenna units and channels of phased array radar ranges from hundreds to thousands or even tens of thousands. If it is processed into an integrated array, there will be problems such as high processing difficulty, poor maintainability, and low electromagnetic compatibility. Therefore, traditional large-scale active phased arrays are composed of several sub-arrays. The traditional wave control system can realize the functions of wave control code calculation and allocation, but before the phased array radar is officially put into operation, all channels need to be tested separately to determine whether the TR component channel corresponding to each channel is working properly. Manually switching channels and making judgments requires a lot of time, which prolongs the development cycle of the phased array radar. Moreover, for each TR component, the existing technology can only test the performance of the component on the fixture. When the component is welded to the antenna board, the performance cannot be directly tested. In addition, the entire radar system contains a large number of mounted TR components. The existing technology can only use a microwave darkroom to test the entire system. The performance loss caused by welding problems will further increase the test time and reduce the test efficiency.

[0003] In order to overcome the above problems, this paper proposes an automated testing method that can quickly and automatically traverse all channels and record and save the voltage and current states corresponding to each channel and the RF performance of the channel, which greatly simplifies the testing process and improves testing efficiency. Summary of the invention

[0004] The object of the present invention is to solve the deficiencies of the prior art and to provide a static detection device and method for a phased array radar system.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A static detection device for a phased array radar system, characterized in that it comprises a host computer, a power supply, a signal source, a spectrum analyzer, a wave control power supply board, an antenna subarray system, a transmitting antenna and a receiving antenna; wherein the host computer is respectively connected to the power supply, the spectrum analyzer and the signal source, and the host computer is also connected to the wave control power supply board through a low voltage differential signal; the power supply is also respectively connected to the spectrum analyzer, the signal source and the wave control power supply board; the antenna subarray system is connected to the wave control power supply board;

[0007] The antenna subarray system is also connected to the transmitting antenna and the signal source respectively, and the corresponding spectrum analyzer is also connected to the receiving antenna, so as to test the transmitting performance of the antenna subarray system; or the antenna subarray system is connected to the receiving antenna and the spectrum analyzer respectively, and the corresponding spectrum analyzer is also connected to the transmitting antenna, so as to test the receiving performance of the antenna subarray system.

[0008] Furthermore, the host computer is connected to the power supply via a USB to LNA interface, and the host computer can control the output voltage value, current limit value and power-on sequence of the power supply; the host computer can also monitor the working status of the power supply, including the voltage and current status of the power supply, and record and save the working status data of the power supply.

[0009] Furthermore, the wave control power board includes a power control part and a wave control part; the power control part is used to convert the voltage directly output by the power supply into the rated voltage of the antenna subarray system; the wave control part is used to control the antenna subarray system according to the instructions of the host computer.

[0010] Furthermore, the wave-controlled power supply board also includes a low-voltage dropout linear regulator. The low-voltage dropout linear regulator can improve the power supply rejection ratio, so that the ripple of the input power supply can be effectively suppressed.

[0011] Furthermore, the wave-controlled power board also includes a FLASH module, which is used to store compensation values ​​of the antenna subarray system. The compensation values ​​include transmission amplitude compensation, reception amplitude compensation, transmission phase shift compensation, and reception phase shift compensation corresponding to each channel of the antenna subarray system.

[0012] Furthermore, the wave-controlled power board also includes a FLASH module, which is used to store compensation values ​​of the antenna subarray system. The compensation values ​​include transmission amplitude compensation, reception amplitude compensation, transmission phase shift compensation, and reception phase shift compensation corresponding to each channel of the antenna subarray system.

[0013] A static detection method for a phased array radar system, the method is based on any one of the above-mentioned devices, and the detection method comprises the following steps:

[0014] Step 1: The host computer determines whether it is a sending test or a receiving test based on the input; if it is a sending test, the antenna subarray system is selected to be connected to the transmitting antenna and the signal source respectively, and the corresponding spectrum analyzer is also connected to the receiving antenna; if it is a receiving test, the antenna subarray system is selected to be connected to the receiving antenna and the spectrum analyzer respectively, and the corresponding signal source is also connected to the transmitting antenna.

[0015] Step 2: The host computer receives the operation instruction and determines whether it is an automatic test instruction; if it is an automatic test instruction, then go to step 3; otherwise, end the step;

[0016] Step 3: Enter the automatic test mode, the host computer receives the start test command, and switches to pulse test or full power test according to the input; determine whether the host computer has completed the connection of each module; if the connection is completed, enter step 3-1; otherwise, the host computer prompts and ends the step;

[0017] Step 3-1: The host computer controls the power supply to be powered on. The configuration of the power supply is controlled by the host computer. The actual output parameters of the power supply are transmitted back to the host computer.

[0018] Step 3-2: The host computer determines whether the quiescent current of the power supply is normal; if the quiescent current is within the set range, proceed to step 3-3; if the quiescent current is not within the set range, an alarm is issued on the host computer and the step ends;

[0019] Step 3-3: The host computer sends an automatic test codeword to the wave control power board of the antenna subarray system; the automatic test codeword includes an attenuation code, a mode selection, a channel selection, and a frequency point; the channel selection is the first channel;

[0020] Step 3-4: The wave control power board receives the automatic test codeword and controls the antenna subarray system to work according to the automatic test codeword; the wave control power board collects static state data of the corresponding channel of the antenna subarray system when there is no RF signal input;

[0021] Step 3-5: The wave-controlled power board transmits the collected data to the host computer;

[0022] Step 3-6: The host computer receives the static state data of the corresponding channel of the antenna subarray system when there is no RF signal input, and determines the relationship between the current of the channel and the set range 1; if the current of the channel exceeds the set range 1, and the power supply reaches the maximum current limit at this time, it is considered that the TR component or joint part corresponding to this channel has a problem of cold soldering or short circuit, and the host computer controls the power supply to cut off the power supply to the wave control power board, and issues an alarm, and ends the step; if the current of the channel does not exceed the set range 1, but exceeds the set range 2, it is considered that there is a problem in the link corresponding to this channel, and further investigation is required. The host computer saves the state data and directly performs the test of the next channel, and returns to step 3-3, wherein the set range 2 is within the range of the set range 1; if the current of the channel does not exceed the set range 2, it is considered that the static state data of this channel is normal, and the host computer controls the power supply to power the signal source and the spectrum analyzer;

[0023] Step 3-7: The host computer controls the signal source to send out signals with different set power values ​​and records the power information collected by the spectrum analyzer; then the host computer controls the output power of the signal source to be a fixed value, and at the same time the wave control power board sends attenuation to the antenna subarray system; the host computer records the power information collected by the spectrum analyzer;

[0024] Step 3-8: The host computer determines whether the test of all channels has been completed; if the test of all channels has been completed, it proceeds to the next step; otherwise, it tests the next channel and returns to step 3-3;

[0025] Step 3-9: The host computer organizes the test data of all channels and generates a test report. The test report includes the static state data and spectrum information of the channel. The spectrum information is the test collection data in step 3-7. The step ends.

[0026] Furthermore, the pulse test in step 3 indicates that the signal emitted by the signal source is a pulse signal; the full-power test indicates that the signal source is normally on; and the information emitted by the signal source is judged based on the input received by the host computer in step 3.

[0027] Furthermore, the operation instruction received by the host computer in step 2 also includes a manual test instruction; when the host computer receives the manual test instruction, it enters the manual test mode; the detection method of the manual test mode includes the following steps:

[0028] Step 4: Enter the manual test mode, the host computer receives the start test command, and switches to pulse test or full power test according to the input; determine whether the host computer has completed the connection of each module; if the connection is completed, enter step 4-1; otherwise, the host computer prompts and ends the step;

[0029] Step 4-1: The host computer controls the power supply to be powered on. The configuration of the power supply is controlled by the host computer. The actual output parameters of the power supply are transmitted back to the host computer.

[0030] Step 4-2: The host computer determines whether the static current of the power supply is normal; if the static current is within the set range, the host computer sends a manual test code to the wave control power board of the antenna subarray system; the manual test code includes mode selection, channel selection, frequency point, attenuation, and enters step 4-3; if the static current is not within the set range, an alarm is issued in the host computer, and the step ends;

[0031] Step 4-3: The wave control power board receives the manual test codeword and interprets it; according to the manual test codeword, the clock signal CLK, data information DATA, enable signal SEL, register latch signal LOCL and component transceiver switching signal TR required to control the transceiver component are sent to the antenna subarray system;

[0032] Step 4-4: The antenna subarray system receives the data sent by the wave control power board and controls the corresponding channel to open;

[0033] Step 4-5: The host computer collects static current and voltage data of the power input to the antenna subarray system;

[0034] Step 4-6: The host computer determines the relationship between the data collected in step 4-5 and the set range 1; if the static current exceeds the set range 1, and the output of the power supply reaches the maximum current limit at this time, it is considered that the TR component or joint part corresponding to this channel has a problem of cold soldering or short circuit, and the host computer controls the power supply to cut off the power supply to the wave control power board, and issues an alarm, and ends the step; if the current of the channel does not exceed the set range 1, but exceeds the set range 2, it is considered that there is a problem in the link corresponding to this channel, which needs further investigation, and the host computer saves the status data, and ends the step; if the current of the channel does not exceed the set range 2, it is considered that the static state data of this channel is normal, and the host computer controls the power supply to power the signal source and the spectrum analyzer;

[0035] Step 4-7: The host computer controls the signal source to send signals of different power values, and records the power information collected by the spectrum analyzer; then the host computer controls the output power of the signal source to be a fixed value, and at the same time, the wave control power board sends an attenuation code to the antenna subarray system to control the antenna subarray system to attenuate; the host computer records the power information collected by the spectrum analyzer;

[0036] Step 4-8: The host computer organizes the test data and generates a test report, which includes the static current, voltage data and spectrum information of the channel. The spectrum information is the test collection data in step 4-7; end step.

[0037] Furthermore, when the component transceiver switching signal TR in step 4-3 is at a high level, the component corresponding to the channel of the antenna subarray system is a transmitting channel; when the component transceiver switching signal TR is at a low level, the component corresponding to the channel of the antenna subarray system is a receiving channel.

[0038] The beneficial effects of the present invention are:

[0039] By setting up the wave control power board, power supply and host computer, the antenna subarray system can be automatically detected, avoiding manual testing, saving labor costs, and improving the test accuracy to ensure the accuracy of the test;

[0040] By setting a FLASH module in the wave control power board, the correction compensation value of the channel of the antenna subarray system is stored in the FLASH module;

[0041] By setting up the host computer, wave control power board, signal source, spectrum analyzer and other modules, combined with the automatic test steps in the present invention, the automatic test of the antenna subarray system is completed, so that the performance of the antenna board can be guaranteed before entering the microwave darkroom for calibration, and the test time is shortened compared with the traditional microwave darkroom test method;

[0042] By changing the positions of the signal source, the spectrum analyzer, and the corresponding receiving antenna and transmitting antenna, the transmission test and the receiving test of the antenna subarray system can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a block diagram of a sending test system according to Embodiment 1 of the present invention;

[0044] Figure 2 A block diagram of a receiving test system according to a first embodiment of the present invention;

[0045] Figure 3 Schematic diagram of the antenna subarray system working mode of the first embodiment of the present invention;

[0046] Figure 4 This is a flow chart of the automatic test mode of the first embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0048] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0049] Embodiment 1:

[0050] like Figure 1 , 2 As shown, a static detection device for a phased array radar system includes a host computer, a power supply, a signal source, a spectrum analyzer, a wave control power board, an antenna subarray system, a transmitting antenna and a receiving antenna; wherein the host computer is respectively connected to the power supply, the spectrum analyzer and the signal source, and the host computer is also connected to the wave control power board through a low voltage differential signal; the power supply is also respectively connected to the spectrum analyzer, the signal source and the wave control power board; the antenna subarray system is connected to the wave control power board. It should be noted that the antenna subarray system is also respectively connected to the transmitting antenna and the signal source, and the corresponding spectrum analyzer is also connected to the receiving antenna, so as to test the transmitting performance of the antenna subarray system; or the antenna subarray system is respectively connected to the receiving antenna and the spectrum analyzer, and the corresponding spectrum analyzer is also connected to the transmitting antenna, so as to test the receiving performance of the antenna subarray system.

[0051] The host computer is used to realize human-computer interaction. In this example, the host computer is written in C# language. The host computer is connected to the power supply through the USB to LNA interface. The host computer can control the output voltage value, current limit value and power-on sequence of the power supply. The host computer can also monitor the working status of the power supply, including the voltage and current status of the power supply, and record and save the working status data of the power supply. The host computer includes a display, which is used to display the channel individual control interface, automatic test interface, power supply detection interface, etc., so as to better realize human-computer interaction; wherein the channel individual control interface is used to display and control the channel of the antenna subarray system, the automatic test interface is used to display and test the performance of the channel of the antenna subarray system, and the power supply detection interface is used to display the working status of the power supply and control the output voltage value, current limit value and power-on sequence of the power supply.

[0052] The power supply is controlled by the host computer and is used to supply power to other components.

[0053] like Figure 3As shown, the wave control power board includes a power control part and a wave control part. The power control part is used to convert the voltage directly output by the power supply into the rated voltage of the antenna subarray system, in this case, it converts the +5.5V voltage into +5V or +3.3V voltage; the power control part can also provide the voltage required by the FPGA device in the wave control power board; the wave control power board is also used to filter useless conversion signals to prevent useless conversion signals from entering the subsequent system and affecting the radio frequency of the subsequent system. In this case, the subsequent system represents the antenna subarray system. The wave control part is used to control the antenna subarray system according to the instructions of the host computer, including controlling the mode of the antenna subarray system. In this case, the antenna subarray system is set with three modes, namely, working mode, calibration mode and correction mode, wherein the working mode indicates that the antenna subarray system works normally, the calibration mode indicates that the initial phase and amplitude value of the channel of the antenna subarray system is detected, and the correction mode indicates that the phase and amplitude value of the channel of the antenna subarray system are numerically compensated. When the antenna subarray system is in working mode, the wave control power board first receives the directional information and the frame header and frame tail, then latches the directional information and the frame header and frame tail data, and performs phase calculation for each phase shifter, adds the calculated result to the calibration data, and quantifies it into a digital control code and sends it to the phase shift attenuation control chip of each component, and finally sends a unified codeword to register the control bit, and locks the data in the phase shift control chip; different channels are equipped with matching phase shift attenuation chips, and all channels start pulse transmission or continuous wave reception at the same time under the control of TR information, and the antenna array surface synthesizes the beam under different phase control. The wave control power board also includes a FLASH module, which is used to store the compensation value of the antenna subarray system in the correction mode. In this example, the compensation value includes the corresponding transmission amplitude compensation, reception amplitude compensation, transmission phase shift compensation, and reception phase shift compensation for each channel, and in this example, there are 32-bit compensation values; by setting the FLASH module, the compensation value of the antenna subarray system can be saved when the power is off. The wave-controlled power supply board also includes a low-voltage dropout linear regulator. Through the low-voltage dropout linear regulator, the power supply rejection ratio can be improved, so that the ripple of the input power supply can be effectively suppressed.

[0054] The antenna subarray system is a module to be tested, and the performance of the channels corresponding to different TR components in the antenna subarray system is tested. The TR component represents the transceiver component. In this example, the antenna subarray system includes 16 Ku-band four-channel transceiver components, 64 microstrip patch antennas, a power division network, a beam power board, etc. Each transceiver component in the antenna subarray system is provided with a memory for storing the compensation value of the transceiver component, and the compensation value is derived from the FLASH module of the beam control power board.

[0055] The signal source and the spectrum analyzer are used to send signals and analyze signals respectively, and both the signal source and the spectrum analyzer are existing devices. The signal source is connected to the antenna subarray system through a radio frequency transmission line, wherein the radio frequency transmission is first connected to the signal source through an SMA connector, and the radio frequency transmission line is connected to the antenna subarray system through an SMP connector.

[0056] During the implementation process, by setting up a wave-controlled power supply board, a power supply and a host computer, automatic detection of the antenna subarray system is achieved, manual testing is avoided, labor costs are saved, and the precision of the test is improved to ensure the accuracy of the test; by setting a FLASH module in the wave-controlled power supply board, the correction compensation value of the channel of the antenna subarray system is stored in the FLASH module.

[0057] like Figure 4 As shown, a static detection method of a phased array radar system includes the following steps:

[0058] Step 1: The host computer determines whether it is a sending test or a receiving test based on the input; if it is a sending test, the antenna subarray system is selected to be connected to the transmitting antenna and the signal source respectively, and the corresponding spectrum analyzer is also connected to the receiving antenna; if it is a receiving test, the antenna subarray system is selected to be connected to the receiving antenna and the spectrum analyzer respectively, and the corresponding signal source is also connected to the transmitting antenna.

[0059] Step 2: The host computer receives the operation instruction and determines whether it is an automatic test instruction or a manual test instruction; if it is an automatic test instruction, it enters the automatic test mode and enters step 3; if it is a manual test instruction, it enters the manual test instruction and enters step 4;

[0060] Step 3: Enter the automatic test mode, the host computer receives the start test command, and switches to pulse test or full power test according to the input; determine whether the host computer has completed the connection of each module; if the connection is completed, go to step 3-1; otherwise, the host computer prompts and ends the step; in this example, the host computer prompts that the corresponding module is not connected to the system, including power supply, signal source, spectrum analyzer, wave control power board, antenna subarray system, transmitting antenna and receiving antenna modules;

[0061] Step 3-1: The host computer controls the power supply to be powered on. The configuration of the power supply is controlled by the host computer. The actual output parameters of the power supply are transmitted back to the host computer.

[0062] Step 3-2: The host computer determines whether the quiescent current of the power supply is normal, where the quiescent current indicates the current when the channel in the antenna subarray system is not turned on; if the quiescent current is within the set range, proceed to step 3-3; if the quiescent current is not within the set range, an alarm is issued in the host computer, and the step ends;

[0063] Step 3-3: The host computer sends an automatic test codeword to the wave control power board of the antenna subarray system; the automatic test codeword includes an attenuation code, a mode selection, a channel selection, a frequency point, etc. The mode selection indicates the mode of the antenna subarray system, including a working mode, a calibration mode, and a correction mode. In the automatic test process of this example, the antenna subarray system is in the calibration mode; the channel selection indicates the test channel of the antenna subarray system. In the automatic test process of this example, the first channel of the antenna subarray system is tested in sequence until the test of all channels is completed;

[0064] Step 3-4: The wave control power board receives the automatic test codeword and controls the antenna subarray system to work according to the automatic test codeword; the wave control power board collects static state data of the corresponding channel of the antenna subarray system when there is no RF signal input, including the current data of the channel, etc.;

[0065] Step 3-5: The wave-controlled power board transmits the collected data to the host computer;

[0066] Step 3-6: The host computer receives the static state data of the corresponding channel of the antenna subarray system when there is no RF signal input, and determines the relationship between the current of the channel and the set range 1; if the current of the channel exceeds the set range 1, and the power supply reaches the maximum current limit at this time, it is considered that the TR component or joint part corresponding to this channel has problems such as cold soldering and short circuit, and the host computer controls the power supply to cut off the power supply to the wave control power board, and issues an alarm, and ends the step; if the current of the channel does not exceed the set range 1, but exceeds the set range 2, it is considered that there is a problem in the link corresponding to this channel, and further manual investigation is required. The host computer saves the state data and directly performs the test of the next channel, and returns to step 3-3, where the set range 2 is within the range of the set range 1; if the current of the channel does not exceed the set range 2, it is considered that the static state data of this channel is normal, and the host computer controls the power supply to power the signal source and the spectrum analyzer;

[0067] Step 3-7: The host computer controls the signal source to send signals of different power values, and records the power information collected by the spectrum analyzer; then the host computer controls the output power of the signal source to be a fixed value, and at the same time, the wave control power board sends the previously received attenuation code to the antenna subarray system to control the antenna subarray system to attenuate; the host computer records the power information collected by the spectrum analyzer;

[0068] Step 3-8: The host computer determines whether the test of all channels has been completed; if the test of all channels has been completed, it proceeds to the next step; otherwise, it tests the next channel and returns to step 3-3;

[0069] Step 3-9: The host computer organizes the test data of all channels and generates a test report. The test report includes the static state data and spectrum information of the channel. The spectrum information is the test collection data in step 3-7. The step ends.

[0070] Step 4: Enter the manual test mode, the host computer receives the start test command, and switches to pulse test or full power test according to the input; determine whether the host computer has completed the connection of each module; if the connection is completed, go to step 4-1; otherwise, the host computer prompts and ends the step; in this example, the host computer prompts that the corresponding module is not connected to the system, including power supply, signal source, spectrum analyzer, wave control power board, antenna subarray system, transmitting antenna and receiving antenna modules;

[0071] Step 4-1: The host computer controls the power supply to be powered on. The configuration of the power supply is controlled by the host computer. The actual output parameters of the power supply are transmitted back to the host computer.

[0072] Step 4-2: The host computer determines whether the static current of the power supply is normal; if the static current is within the set range, the host computer sends a manual test code to the wave control power board of the antenna subarray system; the manual test code includes mode selection, channel selection, frequency, attenuation, etc., and then proceeds to step 4-3; if the static current is not within the set range, an alarm is issued in the host computer, and the step ends; in the manual test process of this example, the antenna subarray system is in calibration mode;

[0073] Step 4-3: The wave control power board receives the manual test codeword and interprets it; according to the manual test codeword, the clock signal CLK, data information DATA, enable signal SEL, register latch signal LOCL and component transceiver switching signal TR required to control the transceiver component are sent to the antenna subarray system;

[0074] Step 4-4: The antenna subarray system receives the data sent by the wave control power board and controls the corresponding one or more channels to open;

[0075] Step 4-5: The host computer collects static current and voltage data of the power input to the antenna subarray system;

[0076] Step 4-6: The host computer determines the relationship between the data collected in step 4-5 and the set range 1; if the static current exceeds the set range 1, and the output of the power supply reaches the maximum current limit at this time, it is considered that the TR component or joint part corresponding to this channel has problems such as cold soldering and short circuit, and the host computer controls the power supply to cut off the power supply to the wave control power board, and issues an alarm, and ends the step; if the current of the channel does not exceed the set range 1, but exceeds the set range 2, it is considered that there is a problem in the link corresponding to this channel, which requires further manual investigation, and the host computer saves the status data, and ends the step; if the current of the channel does not exceed the set range 2, it is considered that the static state data of this channel is normal, and the host computer controls the power supply to power the signal source and the spectrum analyzer;

[0077] Step 4-7: The host computer controls the signal source to send signals of different power values, and records the power information collected by the spectrum analyzer; then the host computer controls the output power of the signal source to be a fixed value, and at the same time, the wave control power board sends an attenuation code to the antenna subarray system to control the antenna subarray system to attenuate; the host computer records the power information collected by the spectrum analyzer;

[0078] Step 4-8: The host computer organizes the test data and generates a test report, which includes the static current, voltage data and spectrum information of the channel. The spectrum information is the test collection data in step 4-7; end step.

[0079] In step 3, in this example, the full power test means that the signal source is always on, and the pulse test means that the signal source is output according to the set duty cycle and the set pulse width. In this example, the duty cycle is 10% and the pulse width is 10us.

[0080] In step 3-3, in some other implementations, multiple designated channels may be opened simultaneously for testing.

[0081] In step 3-7, the signal sent by the signal source includes a pulse type and a full-power type, and the information sent by the signal source is judged according to the input received by the host computer in step 3-.

[0082] In step 3 and step 4, in the transmission test of the antenna subarray system, there is a pulse test or a full-power test; in the reception test of the antenna subarray system, there is only a full-power test, and the signal source is always on.

[0083] When the component transceiver switching signal TR in step 4-3 is at a high level, the component corresponding to the channel of the antenna subarray system is the transmitting channel, corresponding to the transmitting test of the antenna subarray system; when the component transceiver switching signal TR is at a low level, the component corresponding to the channel of the antenna subarray system is the receiving channel, corresponding to the receiving test of the antenna subarray system. The data information DATA includes a phase shift code and an attenuation code, wherein the attenuation code is set by the host computer, and the attenuation amount can be obtained through the attenuation code. In this example, the attenuation code has a total of 6 bits, the attenuation code is binary, and the attenuation amount is decimal, wherein the attenuation code is 111111 corresponding to an attenuation amount of 43dB, and the attenuation code is 000001 corresponding to an attenuation amount of 0.5dB; in addition, because phase shift is not required during the test, the phase shift code is 0.

[0084] In step 4-4, the number of channels opened simultaneously in the manual test mode is one or more.

[0085] After the static data and spectrum information of the channel are obtained in step 3-9 and step 4-8, they are analyzed to obtain the phase and amplitude compensation values ​​of the corresponding channel.

[0086] During the implementation process, the RF signal generated by the signal source is transmitted to the antenna subarray system through the RF transmission line. The RF signal passes through the power division network, switch, amplitude and phase multifunctional chip, power amplifier and other devices of the antenna subarray system, and finally reaches the transmitting antenna, and is radiated from the transmitting antenna to the receiving antenna. The coaxial end of the receiving antenna is connected to the spectrum analyzer through the RF transmission line, so the spectrum analyzer can collect spectrum information. The automatic test of the antenna subarray system is completed by setting up the host computer, wave control power board, signal source, spectrum analyzer and other modules, so that the performance of the antenna board can be guaranteed before entering the microwave darkroom for calibration, which shortens the test time compared to the traditional microwave darkroom test method.

[0087] The above description is only a specific example of the present invention and does not constitute any limitation to the present invention. It is obvious that for professionals in this field, after understanding the content and principle of the present invention, various modifications and changes in form and details may be made without departing from the principle and structure of the present invention, but these modifications and changes based on the idea of ​​the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A static detection method for a phased array radar system, characterized in that: The detection method includes the following steps: Step 1: The host computer determines whether it is a sending test or a receiving test based on the input; if it is a sending test, the antenna subarray system is selected to be connected to the transmitting antenna and the signal source respectively, and the corresponding spectrum analyzer is also connected to the receiving antenna; If it is a receiving test, select the antenna subarray system to be connected to the receiving antenna and the spectrum analyzer respectively, and the corresponding signal source is also connected to the transmitting antenna; Step 2: The host computer receives the operation instruction and determines whether it is an automatic test instruction; if it is an automatic test instruction, then go to step 3; otherwise, end the step; Step 3: Enter the automatic test mode, the host computer receives the start test command, and switches to pulse test or full power test according to the input; determine whether the host computer has completed the connection of each module; if the connection is completed, enter step 3-1; otherwise, the host computer prompts and ends the step; Step 3-1: The host computer controls the power supply to be powered on. The configuration of the power supply is controlled by the host computer. The actual output parameters of the power supply are transmitted back to the host computer. Step 3-2: The host computer determines whether the quiescent current of the power supply is normal; if the quiescent current is within the set range, proceed to step 3-3; if the quiescent current is not within the set range, an alarm is issued on the host computer and the step ends; Step 3-3: The host computer sends an automatic test codeword to the wave control power board of the antenna subarray system; the automatic test codeword includes an attenuation code, a mode selection, a channel selection, and a frequency point; the channel selection is the first channel; Step 3-4: The wave control power board receives the automatic test codeword, and controls the antenna subarray system to work according to the automatic test codeword; the wave control power board collects static state data of the corresponding channel of the antenna subarray system when there is no RF signal input; Step 3-5: The wave-controlled power board transmits the collected data to the host computer; Step 3-6: The host computer receives the static state data of the corresponding channel of the antenna subarray system when there is no RF signal input, and determines the relationship between the current of the channel and the set range 1; if the current of the channel exceeds the set range 1, and the power supply reaches the maximum current limit at this time, it is considered that the TR component or joint part corresponding to this channel has a problem of cold soldering or short circuit, and the host computer controls the power supply to cut off the power supply to the wave control power board, and issues an alarm, and ends the step; if the current of the channel does not exceed the set range 1, but exceeds the set range 2, it is considered that there is a problem in the link corresponding to this channel, and further investigation is required. The host computer saves the state data and directly performs the test of the next channel, and returns to step 3-3, wherein the set range 2 is within the range of the set range 1; if the current of the channel does not exceed the set range 2, it is considered that the static state data of this channel is normal, and the host computer controls the power supply to power the signal source and the spectrum analyzer; Step 3-7: The host computer controls the signal source to send out signals with different set power values ​​and records the power information collected by the spectrum analyzer; then the host computer controls the output power of the signal source to be a fixed value, and at the same time the wave control power board sends attenuation to the antenna subarray system; the host computer records the power information collected by the spectrum analyzer; Step 3-8: The host computer determines whether the test of all channels has been completed; if the test of all channels has been completed, it proceeds to the next step; Otherwise, test the next channel and return to step 3-3; Step 3-9: The host computer organizes the test data of all channels and generates a test report. The test report includes the static state data and spectrum information of the channel. The spectrum information is the test collection data in step 3-7. The step ends.

2. The static detection method of a phased array radar system according to claim 1, characterized in that: The pulse test in step 3 indicates that the signal sent by the signal source is a pulse signal; the full-power test indicates that the signal source is normally on; the information sent by the signal source is judged based on the input received by the host computer in step 3.

3. The static detection method of a phased array radar system according to claim 1, characterized in that: The operation instruction received by the host computer in step 2 also includes a manual test instruction; when the host computer receives the manual test instruction, it enters the manual test mode; the detection method of the manual test mode includes the following steps: Step 4: Enter the manual test mode, the host computer receives the start test command, and switches to pulse test or full power test according to the input; determine whether the host computer has completed the connection of each module; if the connection is completed, enter step 4-1; otherwise, the host computer prompts and ends the step; Step 4-1: The host computer controls the power supply to be powered on. The configuration of the power supply is controlled by the host computer. The actual output parameters of the power supply are transmitted back to the host computer. Step 4-2: The host computer determines whether the static current of the power supply is normal; if the static current is within the set range, the host computer sends a manual test code to the wave control power board of the antenna subarray system; The manual test codewords include mode selection, channel selection, frequency point, and attenuation, and then go to step 4-3; if the static current is not within the set range, an alarm is issued on the host computer, and the step ends; Step 4-3: The wave control power board receives the manual test codeword and interprets it; according to the manual test codeword, the clock signal CLK, data information DATA, enable signal SEL, register latch signal LOCL and component transceiver switching signal TR required to control the transceiver component are sent to the antenna subarray system; Step 4-4: The antenna subarray system receives the data sent by the wave control power board and controls the corresponding channel to open; Step 4-5: The host computer collects the static current and voltage data of the power input to the antenna subarray system; Step 4-6: The host computer determines the relationship between the data collected in step 4-5 and the set range 1; if the static current exceeds the set range 1, and the output of the power supply reaches the maximum current limit at this time, it is considered that the TR component or joint part corresponding to this channel has a problem of cold soldering or short circuit, and the host computer controls the power supply to cut off the power supply to the wave control power board, and issues an alarm, and ends the step; if the current of the channel does not exceed the set range 1, but exceeds the set range 2, it is considered that there is a problem in the link corresponding to this channel, which needs further investigation, and the host computer saves the status data, and ends the step; if the current of the channel does not exceed the set range 2, it is considered that the static state data of this channel is normal, and the host computer controls the power supply to power the signal source and the spectrum analyzer; Step 4-7: The host computer controls the signal source to send signals of different power values, and records the power information collected by the spectrum analyzer; then the host computer controls the output power of the signal source to be a fixed value, and at the same time, the wave control power board sends an attenuation code to the antenna subarray system to control the antenna subarray system to attenuate; the host computer records the power information collected by the spectrum analyzer; Step 4-8: The host computer organizes the test data and generates a test report. The test report includes the static current, voltage data and spectrum information of the channel. The spectrum information is the test collection data in step 4-7; End step.

4. The static detection method of a phased array radar system according to claim 3, characterized in that: When the component transceiver switching signal TR in step 4-3 is at a high level, the component corresponding to the channel of the antenna subarray system is a transmitting channel; when the component transceiver switching signal TR is at a low level, the component corresponding to the channel of the antenna subarray system is a receiving channel.

5. A static detection device for a phased array radar system, wherein the static detection device for a phased array radar system applies any one of the static detection methods for a phased array radar system according to claims 1 to 4, and is characterized in that: It includes a host computer, a power supply, a signal source, a spectrum analyzer, a wave control power supply board, an antenna subarray system, a transmitting antenna and a receiving antenna; wherein the host computer is respectively connected to the power supply, the spectrum analyzer and the signal source, and the host computer is also connected to the wave control power supply board through a low voltage differential signal; the power supply is also respectively connected to the spectrum analyzer, the signal source and the wave control power supply board; the antenna subarray system is connected to the wave control power supply board; The antenna subarray system is also connected to the transmitting antenna and the signal source respectively, and the corresponding spectrum analyzer is also connected to the receiving antenna, so as to test the transmitting performance of the antenna subarray system; or the antenna subarray system is connected to the receiving antenna and the spectrum analyzer respectively, and the corresponding spectrum analyzer is also connected to the transmitting antenna, so as to test the receiving performance of the antenna subarray system.

6. The static detection device of a phased array radar system according to claim 5, characterized in that: The host computer is connected to the power supply via a USB to LNA interface, and the host computer can control the output voltage value, current limit value and power-on sequence of the power supply; the host computer can also monitor the working status of the power supply, including the voltage and current status of the power supply, and record and save the working status data of the power supply.

7. The static detection device of a phased array radar system according to claim 5, characterized in that: The wave control power board includes a power control part and a wave control part; the power control part is used to convert the voltage directly output by the power supply into the rated voltage of the antenna subarray system; the wave control part is used to control the antenna subarray system according to the instructions of the host computer.

8. The static detection device of a phased array radar system according to claim 7, characterized in that: The wave-controlled power supply board also includes a low-voltage difference linear regulator. The low-voltage difference linear regulator can improve the power supply rejection ratio, so that the ripple of the input power supply can be effectively suppressed.

9. The static detection device of a phased array radar system according to claim 7, characterized in that: The wave-controlled power supply board also includes a FLASH module, which is used to store compensation values ​​of the antenna subarray system. The compensation values ​​include transmission amplitude compensation, reception amplitude compensation, transmission phase shift compensation, and reception phase shift compensation corresponding to each channel of the antenna subarray system.

10. The static detection device of a phased array radar system according to claim 5, characterized in that: The signal source is connected to the antenna subarray system via a radio frequency transmission line, wherein the radio frequency transmission is first connected to the signal source via an SMA connector, and the radio frequency transmission line is connected to the antenna subarray system via an SMP connector.

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