CN114063026A - Static detection device and method for phased array radar system - Google Patents
Static detection device and method for phased array radar system Download PDFInfo
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- CN114063026A CN114063026A CN202111147650.5A CN202111147650A CN114063026A CN 114063026 A CN114063026 A CN 114063026A CN 202111147650 A CN202111147650 A CN 202111147650A CN 114063026 A CN114063026 A CN 114063026A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
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Abstract
The invention relates to a static detection device and a static detection method of a phased array radar system, wherein the device comprises an upper computer, a power supply, a signal source, a frequency spectrograph, a wave control power panel, an antenna subarray system, a transmitting antenna and a receiving antenna; the upper computer is respectively connected with the power supply, the frequency spectrograph and the signal source, and is also connected with the wave control power panel through a low-voltage differential signal; the power supply is also respectively connected with the frequency spectrograph, the signal source and the wave control power panel; the antenna subarray system is respectively connected with the transmitting antenna wave control power panel and the signal source; the frequency spectrograph is also connected with the receiving antenna; through setting up wave control power strip, power and host computer, realize the automated inspection to antenna subarray system, avoid carrying out artifical test, the cost of using manpower sparingly has also improved the precision of test, guarantees the accuracy of test.
Description
Technical Field
The invention relates to the field of radio frequency radars, in particular to a static detection device and a static detection method for a phased array radar system.
Background
Active phased array radar is as a novel radar, except having directional height of precision, the interference killing feature is strong, characteristics such as reliability height, and it is still had and need not servo revolving stage in traditional mechanical type scanning radar to compare, and scanning speed is fast, can carry out advantages such as multi-target detection simultaneously. An active phased array radar antenna array plane generally comprises a plurality of antenna units which are arranged according to a certain rule, and each antenna unit is provided with a corresponding phase shifter and attenuator for control. When the phase shifter works, all the phase shifters and all the attenuators need to be controlled respectively according to the phase and amplitude values corresponding to the beam directions, so that a beam control system is needed to calculate and control the phase shift values and the attenuation values. The antenna units and channels of the phased array radar are few and hundreds, many antenna units and channels are thousands or even tens of thousands, and if the phased array radar is processed into an integrated array, the problems of high processing difficulty, poor maintainability, low electromagnetic compatibility and the like exist, so that the traditional large active phased array is composed of a plurality of sub-arrays. The traditional wave control system can realize the functions of calculation and distribution of wave control codes, but before the phased array radar works formally, all channels need to be tested independently, whether the TR component channels corresponding to each channel work normally is judged, a large amount of time is needed for manual channel switching and judgment, and the development period of the phased array radar is prolonged. Furthermore, the prior art can only test the performance of the component on a clamp for each TR component, and the performance cannot be directly tested after the component is welded on an antenna board. In addition, the whole radar system comprises a large number of mounted TR components, the whole system can be tested only by using a microwave darkroom in the prior art, and due to performance loss caused by welding problems and the like, the testing time can be further prolonged, and the testing efficiency is reduced.
In order to overcome the problems, an automatic testing method is provided, which can rapidly and automatically traverse all channels, record and store the voltage and current states corresponding to each channel and the radio frequency performance corresponding to the channel, greatly simplify the testing process and improve the testing efficiency.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a static detection device and a static detection method of a phased array radar system.
In order to solve the problems, the invention adopts the following technical scheme:
a static detection device of a phased array radar system is characterized by comprising an upper computer, a power supply, a signal source, a frequency spectrograph, a wave control power panel, an antenna subarray system, a transmitting antenna and a receiving antenna; the upper computer is respectively connected with the power supply, the frequency spectrograph and the signal source, and is also connected with the wave control power panel through a low-voltage differential signal; the power supply is also respectively connected with the frequency spectrograph, the signal source and the wave control power panel; the antenna subarray system is connected with the wave control power panel;
the antenna subarray system is also respectively connected with the transmitting antenna and the signal source, and the corresponding frequency spectrograph is also connected with the receiving antenna and used for testing the sending performance of the antenna subarray system; or the antenna subarray system is respectively connected with the receiving antenna and the frequency spectrograph, and the corresponding frequency spectrograph is also connected with the transmitting antenna and used for testing the receiving performance of the antenna subarray system.
Furthermore, the upper computer is connected with the power supply through a USB-LNA interface, and can control the output voltage value, the current limiting value and the power-on sequence of the power supply; the upper computer can also monitor the working state of the power supply, including the voltage and current state of the power supply, and record and store the working state data of the power supply.
Further, the wave control power panel comprises a power control part and a wave control part; the power supply control part is used for converting the voltage directly output by the power supply into the rated voltage of the antenna subarray system; the wave control part is used for controlling the antenna subarray system according to the instruction of the upper computer.
Furthermore, the wave control power panel further comprises a low dropout regulator, and the power supply rejection ratio can be improved through the low dropout regulator, so that ripples of the input power supply are effectively suppressed.
Furthermore, the wave control power panel further comprises a FLASH module, wherein the FLASH module is used for storing compensation values of the antenna subarray system, and the compensation values comprise transmission amplitude compensation, receiving amplitude compensation, transmission phase shift compensation and receiving phase shift compensation corresponding to each channel of the antenna subarray system.
Furthermore, the wave control power panel further comprises a FLASH module, wherein the FLASH module is used for storing compensation values of the antenna subarray system, and the compensation values comprise transmission amplitude compensation, receiving amplitude compensation, transmission phase shift compensation and receiving phase shift compensation corresponding to each channel of the antenna subarray system.
A static detection method of a phased array radar system is based on any one of the devices, and the detection method comprises the following steps:
step 1: the upper computer judges whether to send a test or receive the test according to the input; if the test is a sending test, selecting a line on which an antenna subarray system is respectively connected with a transmitting antenna and a signal source, and a corresponding frequency spectrograph is also connected with a receiving antenna; if the signal is a receiving test, selecting a circuit in which an antenna subarray system is respectively connected with a receiving antenna and a frequency spectrograph, and a corresponding signal source is also connected with a transmitting antenna;
step 2: the upper computer receives the operation instruction and judges whether the operation instruction is an automatic test instruction or not; if the test command is an automatic test command, entering step 3; otherwise, ending the step;
and step 3: entering an automatic test mode, receiving a test starting instruction by an upper computer, and switching pulse type test or full power test according to input; judging whether the upper computer verifies that all the modules are connected or not; if the connection is finished, entering the step 3-1; otherwise, the upper computer prompts and the step is finished;
step 3-1: the upper computer controls the power supply to be electrified, and the configuration of the power supply is controlled by the upper computer; actual output parameters of the power supply are transmitted back to the upper computer;
step 3-2: the upper computer judges whether the quiescent current of the power supply is normal; if the quiescent current is within the set range, entering a step 3-3; if the quiescent current is not in the set range, alarming by the upper computer, and ending the step;
step 3-3: the upper computer sends an automatic test code word to a wave control power panel of the antenna subarray system; the automatic test code words comprise attenuation codes, mode selection, channel selection and frequency points; selecting a channel as a first channel;
step 3-4: the wave control power panel receives the automatic test code words and controls the antenna subarray system to work according to the automatic test code words; the wave control power panel acquires static state data of a corresponding channel of the antenna subarray system when no radio frequency signal is input;
step 3-5: the wave control power panel transmits the acquired data to an upper computer;
step 3-6: the upper computer receives static state data of a corresponding channel of the antenna subarray system when no radio frequency signal is input, and judges the relation between the current of the channel and a first set range; if the current of the channel exceeds the first set range and the power supply reaches the maximum current-limiting value at the moment, the problem of insufficient soldering and short circuit of the TR component or the connector part corresponding to the channel is considered, the upper computer controls the power supply to cut off the power supply to the wave control power supply board and sends an alarm, and the step is ended; if the current of the channel does not exceed the first set range but exceeds the second set range, the link corresponding to the channel is considered to have problems, further checking is needed, the upper computer stores the state data, the next channel is directly tested, and the step 3-3 is returned, wherein the second set range is within the first set range; if the current of the channel does not exceed the second set range, the static state data of the channel is considered to be normal, and the upper computer controls the power supply to supply power to the signal source and the frequency spectrograph;
step 3-7: the upper computer controls the signal source to send out signals with different set power values and records power information collected by the frequency spectrograph; then the upper computer controls the output power of the signal source to be a fixed value, and meanwhile, the wave control power panel sends attenuation to the antenna subarray system; the upper computer records power information collected by the frequency spectrograph;
step 3-8: the upper computer judges whether the test of all the channels is finished or not; if the testing of all channels is finished, entering the next step; otherwise, testing the next channel, and returning to the step 3-3;
step 3-9: and (3) the upper computer sorts the test data of all the channels to generate a test report, the test report comprises the static state data and the frequency spectrum information of the channels, the frequency spectrum information is the test acquisition data in the step 3-7, and the step is finished.
Further, the pulse type test in the 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 open; and (4) judging the information sent by the signal source according to the input received by the upper computer in the step (3).
Further, the operation instruction received by the upper computer in the step 2 further comprises a manual test instruction; the upper computer receives a manual test instruction and enters a manual test mode; the detection method of the manual test mode comprises the following steps:
and 4, step 4: entering a manual test mode, receiving a test starting instruction by an upper computer, and switching pulse type test or full power test according to input; judging whether the upper computer verifies that all the modules are connected or not; if the connection is finished, entering the step 4-1; otherwise, the upper computer prompts and the step is finished;
step 4-1: the upper computer controls the power supply to be electrified, and the configuration of the power supply is controlled by the upper computer; actual output parameters of the power supply are transmitted back to the upper computer;
step 4-2: the upper computer judges whether the quiescent current of the power supply is normal; if the quiescent current is in the set range, the upper computer sends a manual test code word to a wave control power panel of the antenna subarray system; wherein, the manual test code word comprises mode selection, channel selection, frequency point and attenuation, and the step 4-3 is carried out; if the quiescent current is not in the set range, alarming by the upper computer, and ending the step;
step 4-3: the wave control power panel receives and reads the manual test code word; according to the manual test code word, sending a clock signal CLK, DATA information DATA, an enabling signal SEL, a register latching signal LOCL and a component transceiving switching signal TR which are required by a control transceiving component to an antenna subarray system;
step 4-4: the antenna subarray system sends and receives data sent by the wave control power panel and controls the corresponding channel to be opened;
and 4-5: the upper computer collects static current and voltage data input into the antenna subarray system by a power supply;
and 4-6: the upper computer judges the relation between the data collected in the step 4-5 and the first set range; if the quiescent current exceeds the first set range and the output of the power supply reaches the maximum current-limiting value at the moment, the problems of insufficient soldering and short circuit of the TR component or the joint part corresponding to the channel are considered, the upper computer controls the power supply to cut off the power supply to the wave control power supply board and sends an alarm, and the step is ended; if the current of the channel does not exceed the first set range but exceeds the second set range, the link corresponding to the channel is considered to have problems, further checking is needed, the upper computer stores the state data, and the step is ended; if the current of the channel does not exceed the second set range, the static state data of the channel is considered to be normal, and the upper computer controls the power supply to supply power to the signal source and the frequency spectrograph;
and 4-7: the upper computer controls the signal source to send out signals with different set power values and records power information collected by the frequency spectrograph; then the upper computer controls the output power of the signal source to be a fixed value, and meanwhile, the wave control power panel sends attenuation codes to the antenna subarray system to control the antenna subarray system to attenuate; the upper computer records the power information collected by the frequency spectrograph;
and 4-8: the upper computer sorts the test data to generate a test report, wherein the test report comprises static current data, voltage data and frequency spectrum information of the channel, and the frequency spectrum information is the test acquisition data in the step 4-7; and finishing the step.
Further, when the module transceiving switching signal TR in the step 4-3 is at a high level, a module corresponding to a channel of the antenna subarray system is a transmission channel; when the module transmit-receive switching signal TR is at a low level, the module corresponding to the channel of the antenna sub-array system is a receive channel.
The invention has the beneficial effects that:
by arranging the wave control power panel, the power supply and the upper computer, the antenna subarray system is automatically detected, manual testing is avoided, labor cost is saved, testing precision is improved, and testing accuracy is guaranteed;
setting a FLASH module in a wave control power panel, and storing a correction compensation value of a channel of an antenna subarray system in the FLASH module;
by arranging modules such as an upper computer, a wave control power panel, a signal source and a frequency spectrograph, and combining the automatic testing steps, the automatic testing of the antenna subarray system is completed, so that the performance of the antenna panel can be ensured before the antenna subarray system enters a microwave darkroom for calibration, and compared with the traditional microwave darkroom testing method, the testing time is shortened;
the transmitting test and the receiving test of the antenna subarray system are realized by changing the positions of the signal source, the frequency spectrograph and the corresponding receiving antenna and the transmitting antenna.
Drawings
Fig. 1 is a block diagram of a transmission test system according to a first embodiment of the present invention;
FIG. 2 is a block diagram of a receiving test system according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of an antenna subarray system according to a first embodiment of the present invention;
fig. 4 is a flowchart of an automatic test mode according to a first embodiment of the invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
The first embodiment is as follows:
as shown in fig. 1 and 2, a static detection device of a phased array radar system includes an upper computer, a power supply, a signal source, a frequency spectrograph, a wave control power supply board, an antenna sub-array system, a transmitting antenna and a receiving antenna; the upper computer is respectively connected with the power supply, the frequency spectrograph and the signal source, and is also connected with the wave control power panel through a low-voltage differential signal; the power supply is also respectively connected with the frequency spectrograph, the signal source and the wave control power panel; the antenna subarray system is connected with the wave control power panel. It should be noted that the antenna subarray system is further connected to the transmitting antenna and the signal source, and the corresponding spectrometer is further connected to the receiving antenna, and is used for testing the transmission performance of the antenna subarray system; or the antenna subarray system is respectively connected with the receiving antenna and the frequency spectrograph, and the corresponding frequency spectrograph is also connected with the transmitting antenna and used for testing the receiving performance of the antenna subarray system.
The upper computer is used for realizing man-machine interaction and is written by C # language in the embodiment. The host computer passes through USB changes LNA interface and is connected with the power, and the output voltage value, current limiting value and the power-on order etc. that the host computer can the control power can also monitor the operating condition of power, including the voltage current state etc. of power to carry out record and save the operating condition data of power. The upper computer comprises a display, and the display is used for displaying a channel independent control interface, an automatic test interface, a power supply detection interface and the like, so that the human-computer interaction can be realized better; the channel independent control interface is used for displaying and controlling channels of the antenna subarray system, the automatic test interface is used for displaying and testing performance of the channels of the antenna subarray system, and the power supply detection interface is used for displaying working state of a power supply and controlling output voltage value, current limiting value, power-on sequence and the like of the power supply.
The power supply is controlled by the upper computer and is used for meeting the power supply of other elements.
As shown in fig. 3, the wave-controlled power board includes a power control portion and a wave-controlled portion. The power supply control part is used for converting the voltage directly output by the power supply into the rated voltage of the antenna subarray system, in this case, converting the voltage of +5.5V into the voltage of +5V or + 3.3V; the power supply control part can also provide voltage required by the FPGA device in the wave control power supply board; the wave control power panel is also used for filtering useless conversion signals and preventing the useless conversion signals from entering a post-stage system to influence the radio frequency of the post-stage system, wherein the post-stage system represents an antenna subarray system. The wave control part is used for controlling the antenna subarray system according to an instruction of an upper computer, and comprises a mode for controlling the antenna subarray system, in the embodiment, the antenna subarray system is provided with three modes, namely a working mode, a calibration mode and a correction mode, wherein the working mode represents that the antenna subarray system works normally, the calibration mode represents that an initial phase and an amplitude value of a channel of the antenna subarray system are detected, and the correction mode represents that numerical compensation is carried out on the phase and the amplitude value of the channel of the antenna subarray system. When the antenna subarray system is in a working mode, firstly, after the wave control power panel receives pointing information and a frame head and frame tail, the pointing information and frame head and frame tail data are latched, phase calculation of each phase shifter is carried out, the result of the calculation is added with calibration data and quantized into a digital control code, the digital control code is sent to a phase-shifting attenuation control chip of each component, and finally, a unified code word register control bit is sent out, and data are latched in the phase-shifting control chip; different channels are provided with phase-shifting attenuation chips matched with the channels, all the channels are simultaneously started to transmit in a pulse mode or receive continuous waves under the control of TR information, and antenna array surfaces synthesize beams under the control of different phases. The wave control power panel also comprises a FLASH module, wherein the FLASH module is used for storing compensation values of the antenna subarray system in a correction mode, in the present example, the compensation values comprise transmission amplitude compensation, reception amplitude compensation, transmission phase shift compensation and reception phase shift compensation corresponding to each channel, and in the present example, the compensation value is total 32 bits; by setting the FLASH module, the compensation value of the antenna subarray system can be saved in a power-down mode. The wave control power panel also comprises a low-dropout linear regulator, and the power supply rejection ratio can be improved through the low-dropout linear regulator, so that ripples of an input power supply are effectively suppressed.
The antenna subarray system is a module to be detected, the performance of channels corresponding to different TR components in the antenna subarray system is detected, the TR components represent transceiving components, and in the embodiment, the antenna subarray system comprises 16 Ku-waveband four-channel transceiving components, 64 microstrip patch antennas, a power division network, a beam power panel and the like. Each receiving and transmitting component in the antenna subarray system is provided with a memory for storing a compensation value of the receiving and transmitting component, and the compensation value is derived from a FLASH module of a wave control power panel.
The signal source and the spectrometer are used for sending out signals and analyzing the signals respectively, and the signal source and the spectrometer both adopt the existing equipment. The signal source is connected with the antenna subarray system through a radio frequency transmission line, wherein the radio frequency transmission line is connected with the signal source through an SMA connector, and the radio frequency transmission line is connected with the antenna subarray system through an SMP connector.
In the implementation process, the automatic detection of the antenna subarray system is realized by arranging the wave control power panel, the power supply and the upper computer, so that manual testing is avoided, the labor cost is saved, the testing precision is improved, and the testing accuracy is ensured; and a FLASH module is arranged in the wave control power supply board, and the corrected compensation value of the channel of the antenna subarray system is stored in the FLASH module.
As shown in fig. 4, a static detection method of a phased array radar system includes the following steps:
step 1: the upper computer judges whether to send a test or receive the test according to the input; if the test is a sending test, selecting a line on which an antenna subarray system is respectively connected with a transmitting antenna and a signal source, and a corresponding frequency spectrograph is also connected with a receiving antenna; if the signal is a receiving test, selecting a circuit in which an antenna subarray system is respectively connected with a receiving antenna and a frequency spectrograph, and a corresponding signal source is also connected with a transmitting antenna;
step 2: the upper computer receives the operation instruction and judges the operation instruction as an automatic test instruction or a manual test instruction; if the command is an automatic test command, entering an automatic test mode, and entering the step 3; if the instruction is a manual test instruction, entering a manual test instruction, and entering a step 4;
and step 3: entering an automatic test mode, receiving a test starting instruction by an upper computer, and switching pulse type test or full power test according to input; judging whether the upper computer verifies that all the modules are connected or not; if the connection is finished, entering the step 3-1; otherwise, the upper computer prompts and the step is finished; in the embodiment, the content prompted by the upper computer is that a corresponding module is not connected with a system, and the system comprises a power supply, a signal source, a frequency spectrograph, a wave control power panel, an antenna subarray system, a transmitting antenna, a receiving antenna and other modules;
step 3-1: the upper computer controls the power supply to be electrified, and the configuration of the power supply is controlled by the upper computer; actual output parameters of the power supply are transmitted back to the upper computer;
step 3-2: the upper computer judges whether the quiescent current of the power supply is normal or not, wherein the quiescent current represents the current of a channel in the antenna subarray system which is not opened; if the quiescent current is within the set range, entering a step 3-3; if the quiescent current is not in the set range, alarming by the upper computer, and ending the step;
step 3-3: the upper computer sends an automatic test code word to a wave control power panel of the antenna subarray system; the automatic test code words comprise attenuation codes, mode selection, channel selection, frequency points and the like; the mode selection represents the mode of the antenna subarray system, including a working mode, a calibration mode and a correction mode, wherein the antenna subarray system is in the calibration mode in the automatic test process of the embodiment; the channel selection represents a test channel of the antenna subarray system, and in the automatic test process of the embodiment, the first channel of the antenna subarray system is used for sequentially testing until the test of all the channels is completed;
step 3-4: the wave control power panel receives the automatic test code words and controls the antenna subarray system to work according to the automatic test code words; the method comprises the following steps that a wave control power panel acquires static state data of a corresponding channel of an antenna subarray system when no radio frequency signal is input, wherein the static state data comprises current data of the channel and the like;
step 3-5: the wave control power panel transmits the acquired data to an upper computer;
step 3-6: the upper computer receives static state data of a corresponding channel of the antenna subarray system when no radio frequency signal is input, and judges the relation between the current of the channel and a first set range; if the current of the channel exceeds the first set range and the power supply reaches the maximum current-limiting value at the moment, the problems of insufficient soldering, short circuit and the like exist at the TR component or the joint part corresponding to the channel, the upper computer controls the power supply to cut off the power supply to the wave control power panel and sends an alarm, and the step is ended; if the current of the channel does not exceed the first set range but exceeds the second set range, the problem exists in the link corresponding to the channel, manual further investigation is needed, the upper computer stores the state data, the test of the next channel is directly carried out, and the step 3-3 is returned, wherein the second set range is within the first set range; if the current of the channel does not exceed the second set range, the static state data of the channel is considered to be normal, and the upper computer controls the power supply to supply power to the signal source and the frequency spectrograph;
step 3-7: the upper computer controls the signal source to send out signals with different set power values and records power information collected by the frequency spectrograph; then the upper computer controls the output power of the signal source to be a fixed value, and meanwhile, the wave control power panel sends the attenuation code received before to the antenna subarray system to control the antenna subarray system to attenuate; the upper computer records the power information collected by the frequency spectrograph;
step 3-8: the upper computer judges whether the test of all the channels is finished or not; if the testing of all channels is finished, entering the next step; otherwise, testing the next channel, and returning to the step 3-3;
step 3-9: the upper computer sorts the test data of all the channels to generate a test report, the test report comprises static state data and frequency spectrum information of the channels, the frequency spectrum information is the test acquisition data in the step 3-7, and the step is finished;
and 4, step 4: entering a manual test mode, receiving a test starting instruction by an upper computer, and switching pulse type test or full power test according to input; judging whether the upper computer verifies that all the modules are connected or not; if the connection is finished, entering the step 4-1; otherwise, the upper computer prompts and the step is finished; in the embodiment, the content prompted by the upper computer is that a corresponding module is not connected with a system, and the system comprises a power supply, a signal source, a frequency spectrograph, a wave control power panel, an antenna subarray system, a transmitting antenna, a receiving antenna and other modules;
step 4-1: the upper computer controls the power supply to be electrified, and the configuration of the power supply is controlled by the upper computer; actual output parameters of the power supply are transmitted back to the upper computer;
step 4-2: the upper computer judges whether the quiescent current of the power supply is normal; if the quiescent current is in the set range, the upper computer sends a manual test code word to a wave control power panel of the antenna subarray system; wherein, the manual test code word comprises mode selection, channel selection, frequency point, attenuation amount and the like, and the step 4-3 is carried out; if the quiescent current is not in the set range, alarming by the upper computer, and ending the step; in the manual test process of the embodiment, the antenna subarray system is in a calibration mode;
step 4-3: the wave control power panel receives and reads the manual test code word; according to the manual test code word, sending a clock signal CLK, DATA information DATA, an enabling signal SEL, a register latching signal LOCL and a component transceiving switching signal TR which are required by a control transceiving component to an antenna subarray system;
step 4-4: the antenna subarray system sends and receives data sent by the wave control power panel and controls one or more corresponding channels to be opened;
and 4-5: the upper computer collects static current and voltage data input into the antenna subarray system by a power supply;
and 4-6: the upper computer judges the relation between the data collected in the step 4-5 and the first set range; if the quiescent current exceeds the first set range and the output of the power supply reaches the maximum current-limiting value at the moment, the problems of insufficient soldering, short circuit and the like exist at the TR component or the joint part corresponding to the channel, the upper computer controls the power supply to cut off the power supply to the wave control power supply board and sends out an alarm, and the step is ended; if the current of the channel does not exceed the first set range but exceeds the second set range, the link corresponding to the channel is considered to have problems, manual further investigation is needed, the upper computer stores the state data, and the step is ended; if the current of the channel does not exceed the second set range, the static state data of the channel is considered to be normal, and the upper computer controls the power supply to supply power to the signal source and the frequency spectrograph;
and 4-7: the upper computer controls the signal source to send out signals with different set power values and records power information collected by the frequency spectrograph; then the upper computer controls the output power of the signal source to be a fixed value, and meanwhile, the wave control power panel sends attenuation codes to the antenna subarray system to control the antenna subarray system to attenuate; the upper computer records the power information collected by the frequency spectrograph;
and 4-8: the upper computer sorts the test data to generate a test report, wherein the test report comprises static current data, voltage data and frequency spectrum information of the channel, and the frequency spectrum information is the test acquisition data in the step 4-7; and finishing the step.
In step 3, in this example, the full power test indicates that the signal source is normally open, and the pulse test indicates that the signal source is allowed to output according to a set duty cycle and a set pulse width, where in this example, the duty cycle is 10% and the pulse width is 10 us.
In step 3-3, in some other embodiments, a plurality of designated channels may be opened simultaneously for testing.
In the step 3-7, the signal sent by the signal source comprises 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 upper computer in the step 3-above.
In the step 3 and the step 4, in the transmission test of the antenna subarray system, a pulse test or a full power test exists; in the receiving test of the antenna subarray system, only full power test exists, and the signal source is normally open at the moment.
When the module transceiving switching signal TR in the step 4-3 is at a high level, the module corresponding to the channel of the antenna subarray system is a transmission channel, and corresponds to a transmission test of the antenna subarray system; when the module transceiving switching signal TR is at a low level, the module corresponding to the channel of the antenna subarray system is a receiving channel, and the receiving test of the antenna subarray system is performed correspondingly. The DATA information DATA comprises a phase shift code and an attenuation code, wherein the attenuation code is set by an upper computer, the attenuation code can obtain attenuation, in the example, the attenuation code is 6 bits in total, the attenuation code is binary, the attenuation is decimal, the attenuation corresponding to the attenuation code of 111111 is 43dB, and the attenuation corresponding to the attenuation code of 000001 is 0.5 dB; in addition, the phase shift code is 0 because no phase shift is required during the test.
In the step 4-4, the number of the channels simultaneously opened in the manual test mode is one or more.
And after the static data and the frequency spectrum information of the channel are obtained in the steps 3-9 and 4-8, analyzing the static data and the frequency spectrum information to obtain a phase and amplitude compensation value of the corresponding channel.
In the implementation process, a radio-frequency signal generated by a signal source is transmitted to an antenna subarray system through a radio-frequency transmission line, the radio-frequency signal finally reaches a transmitting antenna through devices such as a power distribution network, a switch, an amplitude-phase multifunctional chip and a power amplifier of the antenna subarray system, the transmitting antenna radiates to a receiving antenna, and a coaxial end of the receiving antenna is connected with a frequency spectrograph through the radio-frequency transmission line, so that the frequency spectrograph can collect frequency spectrum information. The automatic test of the antenna subarray system is completed by arranging modules such as the upper computer, the wave control power panel, the signal source and the frequency spectrograph, so that the performance of the antenna panel can be guaranteed before the antenna subarray system enters the microwave darkroom for calibration.
The above description is only one specific example of the present invention and should not be construed as limiting the invention in any way. It will be apparent to persons skilled in the relevant art(s) that, having the benefit of this disclosure and its principles, various modifications and changes in form and detail can be made without departing from the principles and structures of the invention, which are, however, encompassed by the appended claims.
Claims (10)
1. A static detection device of a phased array radar system is characterized by comprising an upper computer, a power supply, a signal source, a frequency spectrograph, a wave control power panel, an antenna subarray system, a transmitting antenna and a receiving antenna; wherein
The upper computer is respectively connected with the power supply, the frequency spectrograph and the signal source, and is also connected with the wave control power panel through a low-voltage differential signal; the power supply is also respectively connected with the frequency spectrograph, the signal source and the wave control power panel;
the antenna subarray system is connected with the wave control power panel;
the antenna subarray system is also respectively connected with the transmitting antenna and the signal source, and the corresponding frequency spectrograph is also connected with the receiving antenna and used for testing the sending performance of the antenna subarray system; or the antenna subarray system is respectively connected with the receiving antenna and the frequency spectrograph, and the corresponding frequency spectrograph is also connected with the transmitting antenna and used for testing the receiving performance of the antenna subarray system.
2. The static detection device of the phased array radar system according to claim 1, wherein the upper computer is connected with a power supply through a USB-to-LNA interface, and the upper computer can control the output voltage value, the current limiting value and the power-on sequence of the power supply; the upper computer can also monitor the working state of the power supply, including the voltage and current state of the power supply, and record and store the working state data of the power supply.
3. The apparatus of claim 1, wherein the wave-controlled power board comprises a power control portion and a wave-controlled portion; the power supply control part is used for converting the voltage directly output by the power supply into the rated voltage of the antenna subarray system; the wave control part is used for controlling the antenna subarray system according to the instruction of the upper computer.
4. The apparatus of claim 3, wherein the wave-controlled power board further comprises a low dropout regulator, and the power supply rejection ratio can be increased by the low dropout regulator, so that the ripple of the input power supply is effectively suppressed.
5. The static detection device of the phased array radar system according to claim 3, wherein the wave control power board further comprises a FLASH module, the FLASH module is used for storing compensation values of the antenna subarray system, and the compensation values comprise transmission amplitude compensation, reception amplitude compensation, transmission phase shift compensation and reception phase shift compensation corresponding to each channel of the antenna subarray system.
6. The apparatus of claim 1, wherein the signal source is connected to the antenna subarray system through a radio frequency transmission line, wherein the radio frequency transmission line is 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.
7. A static detection method of a phased array radar system, characterized in that the method is based on any one of the devices of claims 1-6, and the detection method comprises the following steps:
step 1: the upper computer judges whether to send a test or receive the test according to the input; if the test is a sending test, selecting a line on which an antenna subarray system is respectively connected with a transmitting antenna and a signal source, and a corresponding frequency spectrograph is also connected with a receiving antenna; if the signal is a receiving test, selecting a circuit in which an antenna subarray system is respectively connected with a receiving antenna and a frequency spectrograph, and a corresponding signal source is also connected with a transmitting antenna;
step 2: the upper computer receives the operation instruction and judges whether the operation instruction is an automatic test instruction or not; if the test command is an automatic test command, entering step 3; otherwise, ending the step;
and step 3: entering an automatic test mode, receiving a test starting instruction by an upper computer, and switching pulse type test or full power test according to input; judging whether the upper computer verifies that all the modules are connected or not; if the connection is finished, entering the step 3-1; otherwise, the upper computer prompts and the step is finished;
step 3-1: the upper computer controls the power supply to be electrified, and the configuration of the power supply is controlled by the upper computer; actual output parameters of the power supply are transmitted back to the upper computer;
step 3-2: the upper computer judges whether the quiescent current of the power supply is normal; if the quiescent current is within the set range, entering a step 3-3; if the quiescent current is not in the set range, alarming by the upper computer, and ending the step;
step 3-3: the upper computer sends an automatic test code word to a wave control power panel of the antenna subarray system; the automatic test code words comprise attenuation codes, mode selection, channel selection and frequency points; selecting a channel as a first channel; step 3-4: the wave control power panel receives the automatic test code words and controls the antenna subarray system to work according to the automatic test code words; the wave control power panel acquires static state data of a corresponding channel of the antenna subarray system when no radio frequency signal is input;
step 3-5: the wave control power panel transmits the acquired data to an upper computer;
step 3-6: the upper computer receives static state data of a corresponding channel of the antenna subarray system when no radio frequency signal is input, and judges the relation between the current of the channel and a first set range; if the current of the channel exceeds the first set range and the power supply reaches the maximum current-limiting value at the moment, the problem of insufficient soldering and short circuit of the TR component or the connector part corresponding to the channel is considered, the upper computer controls the power supply to cut off the power supply to the wave control power supply board and sends an alarm, and the step is ended; if the current of the channel does not exceed the first set range but exceeds the second set range, the link corresponding to the channel is considered to have problems, further checking is needed, the upper computer stores the state data, the next channel is directly tested, and the step 3-3 is returned, wherein the second set range is within the first set range; if the current of the channel does not exceed the second set range, the static state data of the channel is considered to be normal, and the upper computer controls the power supply to supply power to the signal source and the frequency spectrograph;
step 3-7: the upper computer controls the signal source to send out signals with different set power values and records power information collected by the frequency spectrograph; then the upper computer controls the output power of the signal source to be a fixed value, and meanwhile, the wave control power panel sends attenuation to the antenna subarray system; the upper computer records power information collected by the frequency spectrograph;
step 3-8: the upper computer judges whether the test of all the channels is finished or not; if the testing of all channels is finished, entering the next step; otherwise, testing the next channel, and returning to the step 3-3;
step 3-9: and (3) the upper computer sorts the test data of all the channels to generate a test report, the test report comprises the static state data and the frequency spectrum information of the channels, the frequency spectrum information is the test acquisition data in the step 3-7, and the step is finished.
8. The static detection method of the phased array radar system as claimed in claim 7, wherein the impulse type test in step 3 indicates that the signal from the signal source is an impulse signal; the full power test indicates that the signal source is normally open; and (4) judging the information sent by the signal source according to the input received by the upper computer in the step (3).
9. The static detection method of a phased array radar system as claimed in claim 7, wherein the operation instructions received by the upper computer in step 2 further comprise manual test instructions; the upper computer receives a manual test instruction and enters a manual test mode; the detection method of the manual test mode comprises the following steps:
and 4, step 4: entering a manual test mode, receiving a test starting instruction by an upper computer, and switching pulse type test or full power test according to input; judging whether the upper computer verifies that all the modules are connected or not; if the connection is finished, entering the step 4-1; otherwise, the upper computer prompts and the step is finished;
step 4-1: the upper computer controls the power supply to be electrified, and the configuration of the power supply is controlled by the upper computer; actual output parameters of the power supply are transmitted back to the upper computer;
step 4-2: the upper computer judges whether the quiescent current of the power supply is normal; if the quiescent current is in the set range, the upper computer sends a manual test code word to a wave control power panel of the antenna subarray system; wherein, the manual test code word comprises mode selection, channel selection, frequency point and attenuation, and the step 4-3 is carried out; if the quiescent current is not in the set range, alarming by the upper computer, and ending the step;
step 4-3: the wave control power panel receives and reads the manual test code word; according to the manual test code word, sending a clock signal CLK, DATA information DATA, an enabling signal SEL, a register latching signal LOCL and a component transceiving switching signal TR which are required by a control transceiving component to an antenna subarray system;
step 4-4: the antenna subarray system sends and receives data sent by the wave control power panel and controls the corresponding channel to be opened;
and 4-5: the upper computer collects static current and voltage data input into the antenna subarray system by a power supply;
and 4-6: the upper computer judges the relation between the data collected in the step 4-5 and the first set range; if the quiescent current exceeds the first set range and the output of the power supply reaches the maximum current-limiting value at the moment, the problems of insufficient soldering and short circuit of the TR component or the joint part corresponding to the channel are considered, the upper computer controls the power supply to cut off the power supply to the wave control power supply board and sends an alarm, and the step is ended; if the current of the channel does not exceed the first set range but exceeds the second set range, the link corresponding to the channel is considered to have problems, further checking is needed, the upper computer stores the state data, and the step is ended; if the current of the channel does not exceed the second set range, the static state data of the channel is considered to be normal, and the upper computer controls the power supply to supply power to the signal source and the frequency spectrograph;
and 4-7: the upper computer controls the signal source to send out signals with different set power values and records power information collected by the frequency spectrograph; then the upper computer controls the output power of the signal source to be a fixed value, and meanwhile, the wave control power panel sends attenuation codes to the antenna subarray system to control the antenna subarray system to attenuate; the upper computer records the power information collected by the frequency spectrograph;
and 4-8: the upper computer sorts the test data to generate a test report, wherein the test report comprises static current data, voltage data and frequency spectrum information of the channel, and the frequency spectrum information is the test acquisition data in the step 4-7; and finishing the step.
10. The static detection method of the phased array radar system according to claim 9, wherein when the component transmit-receive switching signal TR in the step 4-3 is at a high level, the component corresponding to the channel of the antenna sub-array system is a transmit channel; when the module transmit-receive switching signal TR is at a low level, the module corresponding to the channel of the antenna sub-array system is a receive channel.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116203856A (en) * | 2023-05-04 | 2023-06-02 | 成都天成电科科技有限公司 | Universal test method and device based on parameter configuration and storage medium |
| CN118050696A (en) * | 2024-04-16 | 2024-05-17 | 天津云遥宇航科技有限公司 | Satellite-borne SAR phased array antenna wave control unit test system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116203856A (en) * | 2023-05-04 | 2023-06-02 | 成都天成电科科技有限公司 | Universal test method and device based on parameter configuration and storage medium |
| CN116203856B (en) * | 2023-05-04 | 2023-10-31 | 成都天成电科科技有限公司 | Universal test method and device based on parameter configuration and storage medium |
| CN118050696A (en) * | 2024-04-16 | 2024-05-17 | 天津云遥宇航科技有限公司 | Satellite-borne SAR phased array antenna wave control unit test system and method |
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