CN111273243A - Radar integrated test platform - Google Patents
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- CN111273243A CN111273243A CN202010200390.2A CN202010200390A CN111273243A CN 111273243 A CN111273243 A CN 111273243A CN 202010200390 A CN202010200390 A CN 202010200390A CN 111273243 A CN111273243 A CN 111273243A
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- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 24
- 239000000523 sample Substances 0.000 claims description 22
- 230000035945 sensitivity Effects 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
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- 230000008569 process Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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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Abstract
The invention discloses a radar comprehensive test platform, which comprises: the microwave comprehensive tester comprises a power supply module, a microwave switch group, a microwave input port, a microwave assembly, an industrial control computer, an oscilloscope, a universal meter, a signal source and a microwave comprehensive tester; the power supply module is connected with the microwave switch group, the microwave input port, the industrial control computer, the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester; the microwave switch group and the microwave input port are connected with the microwave assembly; the industrial control computer is connected with the power supply module through a PPI cable; and the industrial control computer is connected with the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester through an RS232 bus. The invention realizes the automatic control of the radar radio frequency circuit; the radar is simulated to transmit radio frequency signals, the performance of a radar receiver is automatically and quickly detected, accurate and reliable measurement of the performance of radar equipment and quick fault positioning are facilitated, and therefore the reliable guarantee time of the radar is effectively prolonged.
Description
Technical Field
The invention relates to the technical field of radar testing, in particular to a radar comprehensive testing platform.
Background
The radar is a complex electronic system, a large-scale integrated circuit, a high-performance intelligent chip and a computer bus technology are widely adopted, a radio frequency and 30Hz intermediate frequency circuit system with the frequency of 10GHz is arranged in the radar, the professional is strong, the comprehensive degree and the technological content are high, and when radar support personnel carry out the work and tasks of radar equipment performance test, parameter adjustment, regular maintenance, fault detection and the like, the problems such as which instrument is selected, what mode or range is adopted, what measuring method or step is adopted and the like need to be considered.
The existing radar test mode generally adopts general test instruments, such as a microwave comprehensive tester, a spectrum analyzer, a high-performance oscilloscope, a desk multimeter and the like. The matched radar detection instruments have the common objective problems of multiple types, complex operation, lack of necessary accessories and the like, so that some radar test researchers are afraid of using and not using the instruments, the instruments are not durable and the like, the idle rate is high, and the detection and maintenance work of radar equipment is seriously influenced. The existing testing tool cannot realize seamless butt joint with the radar, cannot meet the requirements of rapid detection training and maintenance guarantee of radar performance, and influences the radar operation and the capability of maintenance personnel for analyzing problems and solving problems.
Accordingly, there is a need in the art for improvements.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is as follows: the radar comprehensive test platform is provided to solve the problems in the prior art.
According to an aspect of an embodiment of the present invention, a radar integrated test platform is disclosed, including:
the microwave comprehensive tester comprises a power supply module, a microwave switch group, a microwave input port, a microwave assembly, an industrial control computer, an oscilloscope, a universal meter, a signal source and a microwave comprehensive tester;
the power supply module is connected with the microwave switch group, the microwave input port, the industrial control computer, the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester and is used for supplying power to the industrial control computer, the microwave switch group, the microwave input port, the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester;
the microwave switch group and the microwave input port are connected with the microwave assembly and used for receiving microwave signals of the microwave assembly and realizing automatic program control switching of multiple paths of radio frequency signals and power measurement signals;
the microwave assembly is connected with external radar equipment to be tested and is used for completing signal power matching of the radar transceiver and the equipment;
the industrial control computer is connected with the power supply module through a PPI cable and is used for setting working parameters of the power supply module and receiving power supply of the power supply module;
the industrial control computer is connected with the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester through an RS232 bus, so that the control and test data readback of the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester are realized;
the oscilloscope is used for observing the waveforms and measuring the parameters of the intermediate frequency signal of 30MHz of the radar, the video signal of low frequency and the low frequency signal;
the universal meter is used for measuring the accurate data of the radar parameters;
the signal source is used for simulating a frequency signal with the radar frequency below 30MHz according to the test requirement and providing a simulated radar rectangular modulation pulse when an index test is carried out on a receiver of the radar;
the microwave comprehensive tester is used for measuring the transmitted pulse power, the transmitted pulse working frequency and the radio frequency signal spectrum of the X-band radar, simulating the radio frequency pulse transmitted by the radar and testing the sensitivity index of a radar receiver.
In another embodiment of the integrated radar test platform according to the present invention, the power module includes:
the system comprises a mains supply interface, a relay switch group, a PLC unit and a switching power supply;
the commercial power interface is used for connecting commercial power and outputting the commercial power to the relay switch group, the PLC unit and the switch power supply;
the relay switch group is connected with the PLC unit and the industrial control computer, and is used for supplying power in multiple paths under the control of the PLC unit and supplying power to the industrial control computer;
the PLC unit controls the multipath power supply of the relay switch group and controls the power supply and the power failure of the relay switch group to the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source in a programmable control mode;
the switch power supply is connected with the PLC unit, the microwave switch group and the microwave input port, and is used for converting commercial power into direct current and supplying power to the PLC unit, the microwave switch group and the microwave input port.
In another embodiment of the integrated radar test platform according to the present invention, the power module includes: the device comprises an instrument work indicator light, a test platform work indicator light, an instrument work control button, a measurement button, a work timing display screen and a power supply main switch;
the instrument work control button is used for manually controlling the power supply and the power failure of the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source during debugging;
the test platform work indicator lamp is used for indicating the working state of the test platform;
the instrument work control button is used for manually controlling the work of the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source
The measuring button is used for manually controlling the work of the microwave switch group and the microwave input port during debugging so as to complete the manual operation of switching the microwave switch group and the microwave input port;
the working timing display screen is used for timing the working time of the test platform;
the power supply master switch is used for controlling the power supply and the power failure of the commercial power.
In another embodiment of the integrated radar test platform according to the present invention, the microwave module includes:
the directional coupler, the coaxial attenuator, the coaxial isolator and the radio frequency cable;
the directional coupler is matched with the coaxial attenuator to realize the signal power matching of the radar transceiver and the equipment;
the coaxial isolator is connected with the coaxial attenuator;
the radio frequency cable is respectively connected with the radar signal, the microwave switch group and the microwave input port and is used for outputting the microwave switch group and the microwave input port after the radar signal power is matched.
In another embodiment of the integrated radar test platform according to the present invention, the switching power supply outputs a dc power supply, which includes: 5V 2A direct current, 24V 1A direct current and 24V 2A direct current;
the 5V 2A direct current and the 24V 1A direct current are output to the microwave switch group and the microwave input port;
and the 24V 2 ampere direct current is output to the PLC unit.
In another embodiment of the integrated radar test platform according to the present invention, the relay switch set includes: and the four ohm dragon +24V relays respectively output four paths of power supply signals to supply power to the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source.
In another embodiment of the integrated radar test platform according to the present invention, the microwave switch set and the microwave input port include:
one end of the detection diode type power probe is connected with the microwave comprehensive tester, and the other end of the detection diode type power probe is connected with the power supply module;
and the detection diode type power probe is internally provided with a detection circuit for outputting an envelope of a detected radio frequency signal.
Compared with the prior art, the invention has the following advantages:
the radar comprehensive test platform is connected with a radar waveguide through a microwave component, automatic program-controlled switching of a plurality of paths of radio frequency signals and power measurement signals is realized through a microwave switch group and a microwave input port, power is supplied to all devices in the platform through a power supply module, and the work of all the devices is controlled through an industrial control computer, so that the automatic control of a radar radio frequency circuit is realized; the radar is simulated to transmit radio frequency signals, the performance of a radar receiver is automatically and quickly detected, accurate and reliable measurement of the performance of radar equipment and quick fault positioning are facilitated, and therefore the reliable guarantee time of the radar is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings used in the description of the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a radar integrated test platform of the present invention.
Fig. 2 is a schematic diagram of the operation of another embodiment of the radar integrated test platform of the present invention.
In the figure: the microwave tester comprises a power supply module 1, a microwave switch group 2, a microwave input port 3, a microwave component 4, an industrial control computer 5, an oscilloscope 6, a universal meter 7, a signal source 8 and a microwave comprehensive tester 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The radar integrated test platform provided by the invention is described in more detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of an embodiment of a radar integrated test platform according to the present invention, and as shown in fig. 1, the radar integrated test platform of the embodiment includes:
the system comprises a power supply module 1, a microwave switch group, a microwave input port 2, a microwave assembly 3, an industrial control computer 4, an oscilloscope 5, a universal meter 6, a signal source 7 and a microwave comprehensive tester 8;
the power module 1 is connected with the microwave switch group and microwave input port 2, the industrial personal computer 4, the oscilloscope 5, the universal meter 6, the signal source 7 and the microwave comprehensive tester 8, and is used for supplying power to the industrial personal computer 4, the microwave switch group and microwave input port 2, the oscilloscope 5, the universal meter 6, the signal source 7 and the microwave comprehensive tester 8, the power module 1 is externally connected with commercial power, and after voltage conversion, alternating current is converted into direct current with corresponding voltage and is output to corresponding equipment;
the microwave switch group and the microwave input port 2 are connected with the microwave assembly 3 and used for receiving microwave signals of the microwave assembly 3 and realizing automatic program control switching of multiple paths of radio frequency signals and power measurement signals;
the microwave component 3 is connected with external radar equipment to be tested and used for completing signal power matching of a radar transceiver and the equipment;
the industrial control computer 4 is connected with the power module 1 through a PPI cable, and is used for setting working parameters of the power module 1 and receiving power supply of the power module 1;
the industrial control computer 4 is connected with the oscilloscope 5, the universal meter 6, the signal source 7 and the microwave comprehensive tester 8 through an RS232 bus, so that the control and test data read-back of the oscilloscope 5, the universal meter 6, the signal source 7 and the microwave comprehensive tester 8 are realized;
the oscilloscope 5 is used for observing the waveforms and measuring the parameters of the radar 30MHz intermediate frequency signal, the low frequency video signal and the low frequency signal;
the universal meter 6 is used for accurate data measurement of radar parameters;
the signal source 7 is used for simulating a frequency signal with a radar frequency below 30MHz according to a test requirement, and providing a simulated radar rectangular modulation pulse when an index test is performed on a receiver of the radar;
the microwave comprehensive tester 8 is used for measuring the transmitted pulse power, the transmitted pulse working frequency and the radio frequency signal spectrum of the X-band radar, simulating the radio frequency pulse transmitted by the radar and testing the sensitivity index of the radar receiver.
The power module 1 includes:
the system comprises a mains supply interface, a relay switch group, a PLC unit and a switching power supply;
the commercial power interface is used for connecting commercial power and outputting the commercial power to the relay switch group, the PLC unit and the switch power supply;
the relay switch group is connected with the PLC unit and the industrial personal computer 4, and is used for supplying power in multiple paths under the control of the PLC unit and supplying power to the industrial personal computer 4;
the PLC unit controls the multipath power supply of the relay switch group and controls the power supply and the power failure of the relay switch group to the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 in a programmable control mode;
the switch power supply is connected with the PLC unit, the microwave switch group and the microwave input port 2, and the switch power supply is used for converting commercial power into direct current and supplying power to the PLC unit, the microwave switch group and the microwave input port 2.
The power module 1 includes: the device comprises an instrument work indicator light, a test platform work indicator light, an instrument work control button, a measurement button, a work timing display screen and a power supply main switch;
the instrument work control button is used for manually controlling the power supply and the power failure of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 during debugging;
the test platform work indicator lamp is used for indicating the working state of the test platform;
the instrument work control button is used for manually controlling the work of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7
The measuring button is used for manually controlling the work of the microwave switch group and the microwave input port 2 during debugging so as to complete the manual switching operation of the microwave switch group and the microwave input port 2;
the working timing display screen is used for timing the working time of the test platform;
the power supply master switch is used for controlling the power supply and the power failure of the commercial power.
In a specific embodiment, four instrument work indicating lamps, one test platform work indicating lamp, four instrument work control buttons, four measurement buttons, one work timing display screen and one power main switch are arranged, and the four instrument work control buttons are used for manually controlling whether the microwave comprehensive tester 8, the oscilloscope 5, the multimeter 6 and the signal source 7 are powered on or not during debugging; the four measuring buttons are used for manually controlling the work of the microwave switch group and the microwave input port 2 during debugging so as to complete the switching manual operation of the specific microwave switch group and the microwave input port 2; the power supply main switch is used for controlling the alternating current power supply of the PLC unit and the switching power supply to realize the power supply control of small switching power; the work timing is a digital timer of 220V alternating current and is linked with a power supply main switch to realize the irreversible work timing of the system; in order to reduce insertion loss and standing-wave ratio caused by transmission of radio-frequency signals in the radio-frequency cable, customized semi-rigid radio-frequency cables are adopted between the microwave switches and the radio-frequency base.
When the power main switch of the power module 1 is turned on, the 220V/50Hz commercial power alternating current is applied to the relay switch group, the PLC unit and the switch power supply, and at the moment, the instrument work indicating lamp is turned on. In another embodiment of the integrated radar test platform according to the present invention, the switching power supply outputs a dc power supply, which includes: 5V 2A direct current, 24V 1A direct current and 24V 2A direct current; the 5V 2A direct current and the 24V 1A direct current are output to the microwave switch group and the microwave input port 2; and the 24V 2 ampere direct current is output to the PLC unit. The PLC unit and the switching power supply work, and the relay switch group, the microwave switch group and the microwave input port 2 are in a standby state.
In order to complete the automatic power-on management of the resources of the test instrument and realize the automatic butt joint of the resources of the test instrument, particularly the microwave comprehensive test instrument 8, various signal cables, a radio frequency attenuator, a microwave switch group and a microwave input port 2, the intelligent and automatic test of a radar test platform is realized by adopting a PLC unit and an industrial control computer 4 combined control mode.
The industrial control computer 4 is programmed by adopting LabWindows/CVI software, so that the resources of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 are controlled and test data is read back, communication interfaces of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6, the signal source 7 and the industrial control computer 4 are RS232 ports, the resources of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 are controlled and test data is read back by adopting a serial port communication mode through the software programming, the resources of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 are respectively distributed with a serial port, and one-to-many communication of the computer on the resources of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 is realized.
The PLC unit is a Siemens PLC control module CPU226, the PLC unit controls the relay switch group to provide a 4-path programmable power supply mode, the intelligent control of power supply and power failure of the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 is realized, in order to prevent the abrasion of the radio frequency cable head caused by human factors, or the test instrument and the radar part are damaged due to the connection error, the PLC unit is adopted to complete the program control switching of the microwave switch group and the microwave input port 2, the PLC unit adopts two seamless switching modes of manual control and program control, the manual control mainly realizes the combined control by the buttons of the front panel of the test platform and is mainly used for the debugging of the test platform or the independent manual control of the instrument resource, the program control is communicated with the industrial personal computer 4 through a PPI cable, and the configuration control of the PLC unit by the computer is realized through the computer programming of King View software.
The microwave switch group and the microwave input port 2 comprise a microwave switch group and a microwave input port;
the microwave switch group comprises a series of microwave switches, microwave attenuators and radio frequency cables which meet the requirement of X-waveband signal transmission;
the microwave switch group and the microwave input port 2 include:
one end of the detection diode type power probe is connected with the microwave comprehensive tester 8, and the other end of the detection diode type power probe is connected with the power module 1;
and the detection diode type power probe is internally provided with a detection circuit for outputting an envelope of a detected radio frequency signal.
The microwave switch group mainly realizes automatic program control switching of three paths of radio frequency signals and one path of power measurement signal; because the transmission signal frequency of the radar is very high, the radio frequency cable adopts a semi-rigid customized radio frequency cable, the matching problem of the radio frequency cable head is also considered while the performance requirements are met, the radio frequency cable is respectively connected in a segmented mode on the front panel of the microwave comprehensive tester 8 and the inside and outside of the power supply module 1, when a microwave switch controlled by the industrial control computer 4 is located at different positions, automatic switching of a microwave device and a radio frequency circuit according to specific test tasks and steps is achieved, abrasion and damage of the microwave device and the radio frequency cable head caused by human factors are prevented, and the reliability of the system is improved.
The cable of the detection diode type power probe is a special cable, one end of the cable is connected with the front panel of the microwave comprehensive tester 8, the other end of the cable is connected with the rear panel of the power module 1, and the cable is connected with the detection diode type power probe through a conversion seat. A detection circuit is arranged in the detection diode type power probe, outputs an envelope of a detected radio frequency signal, and is connected to the output end of a rear panel radio frequency envelope BNC of the power module 1 through a radio frequency cable; the radio frequency port of the detection diode type power probe is connected with the COM end of the second microwave switch through a 30dB attenuator; before pulse power measurement is carried out, the instrument needs to be calibrated, after the industrial control computer 4 controls the second microwave switch COM end to be connected with the two ends, a calibration command is sent out according to the industrial control computer 4, and power calibration of the instrument and the detection diode type power probe in a measured signal frequency band is achieved.
The detector diode type power probe can effectively inhibit common mode noise interference, an E2PROM and a thermistor are arranged in the probe, the probe and a 50MHz calibration source have the functions of calibrating and correcting a digital detection curve, and when frequency measurement is carried out, the detector diode type power probe is not needed, the detector diode type power probe directly passes through a radio frequency port, and is directly added to a channel and a control unit after proper radio frequency attenuation.
The microwave assembly 3 includes:
the directional coupler, the coaxial attenuator, the coaxial isolator and the radio frequency cable;
the directional coupler is matched with the coaxial attenuator to realize the signal power matching of the radar transceiver and the equipment;
the coaxial isolator is connected with the coaxial attenuator;
the radio frequency cable is respectively connected with the radar signal, the microwave switch group and the microwave input port 2 and is used for outputting the microwave switch group and the microwave input port 2 after the radar signal power is matched.
As shown in fig. 2, the operating principle of the microwave module 3 is as follows: the radar radio frequency electromagnetic wave is converted and attenuated into radio frequency pulse through the radar waveguide and the microwave component 3, enters the test platform through the RFIN end and serves as a sample signal of the radar transmitted radio frequency pulse, and the sample signal possibly exceeds the measurement range of the microwave comprehensive tester 8 to cause the damage of the microwave comprehensive tester 8, so that a 20dB coaxial attenuator is additionally arranged between the two microwave switches; in order to detect the sensitivity of the radar receiver, the microwave comprehensive tester 8 simulates and outputs an X-waveband radar pulse signal to enter a radar waveguide system through an RFOUT end of a rear panel of the power module 1 and a microwave component under the control of a signal source output modulation pulse.
The microwave component 3 is used as a hard connecting part to be connected into a radar waveguide system and integrated with the radar, but the normal work of the radar is not influenced; two X-band radio frequency cables are led out from the microwave component 3 and used as test points of performance indexes of the radar transceiver, and the test points are connected with radio frequency ports corresponding to a radar test platform; in the microwave component 3, the directional coupler is a radio frequency attenuation device for electromagnetic wave directional transmission, and is matched with the coaxial attenuator to ensure that signal power matching is realized between the radar transceiver and the microwave comprehensive tester 8 during performance detection.
The relay switch group includes: and the four ohm dragon +24V relays respectively output four paths of power supply signals to supply power to the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7.
In a specific implementation process, the current automatic test function is selected according to the requirement of a test task. For the automatic test function of the microwave integrated tester 8, parameters such as power calibration and power measurement, frequency measurement, setting and output of a microwave signal source and the like can be selected. For the function of automatic test of the oscilloscope 5, parameters such as peak value, frequency value, positive half cycle time, cycle time and the like of the CH1 and CH2 channels can be selected for automatic reading, the CH3 and CH4 channels of the oscilloscope 5 do not have the function of program control automatic measurement, and manual debugging can be performed when needed; the multimeter 6 automatically tests three optional parameters such as alternating voltage, direct voltage and resistance, the gear of the measurement should be selected before the measurement, and the correct test line connection is established, the measurement button and the reading window of the selected parameter can realize the automatic measurement, but the measurement button and the reading window of the unselected parameter are gray and have no operation function. After the test parameters of the microwave comprehensive tester 8, the oscilloscope 5 and the universal meter 6 are selected, the test data can be measured and read back on the premise of normal line connection, and the current measured value is displayed in a corresponding test window.
In a specific implementation process, the microwave comprehensive tester 8, the oscilloscope 5, the universal meter 6 and the signal source 7 are respectively an AV4942 microwave comprehensive tester, a tek TPS2024 oscilloscope, a FLUKE8845A desk universal meter and a two-channel arbitrary wave generator; the microwave assembly 3 comprises a directional coupler, a coaxial attenuator auxiliary cable, a probe and the like.
In a specific embodiment, the technical indexes of the radar comprehensive test platform are as follows:
the peak power range of the input radio frequency signal is-20 dBm- +20dBm, and the measurement error of the emission power is less than 2.2 dBm; the radio frequency range is 8.0 GHz-18 GHz, and the frequency measurement error is less than 1 multiplied by 10 < -1 >;
the peak power of the output radio frequency signal is-20 dBm- +0dBm, the radio frequency is 9.37GHz, and the pulse width is 2 mu s;
measuring signal waveforms into four channels, wherein the bandwidth is 200MHz, the sampling rate is 2GS/s, and automatically measuring the signal waveforms into two channels;
the device has three automatic measurement functions of alternating voltage, direct voltage and resistance, and the measurement precision is six bits and a half.
The radar comprehensive test platform provided by the invention is introduced in detail, a specific example is applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A radar integrated test platform, comprising:
the microwave comprehensive tester comprises a power supply module, a microwave switch group, a microwave input port, a microwave assembly, an industrial control computer, an oscilloscope, a universal meter, a signal source and a microwave comprehensive tester;
the power supply module is connected with the microwave switch group, the microwave input port, the industrial control computer, the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester and is used for supplying power to the industrial control computer, the microwave switch group, the microwave input port, the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester;
the microwave switch group and the microwave input port are connected with the microwave assembly and used for receiving microwave signals of the microwave assembly and realizing automatic program control switching of multiple paths of radio frequency signals and power measurement signals;
the microwave assembly is connected with external radar equipment to be tested and is used for completing signal power matching of the radar transceiver and the equipment;
the industrial control computer is connected with the power supply module through a PPI cable and is used for setting working parameters of the power supply module and receiving power supply of the power supply module;
the industrial control computer is connected with the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester through an RS232 bus, so that the control and test data readback of the oscilloscope, the universal meter, the signal source and the microwave comprehensive tester are realized;
the oscilloscope is used for observing the waveforms and measuring the parameters of the intermediate frequency signal of 30MHz of the radar, the video signal of low frequency and the low frequency signal;
the universal meter is used for measuring the accurate data of the radar parameters;
the signal source is used for simulating a frequency signal with the radar frequency below 30MHz according to the test requirement and providing a simulated radar rectangular modulation pulse when an index test is carried out on a receiver of the radar;
the microwave comprehensive tester is used for measuring the transmitted pulse power, the transmitted pulse working frequency and the radio frequency signal spectrum of the X-band radar, simulating the radio frequency pulse transmitted by the radar and testing the sensitivity index of a radar receiver.
2. The radar integrated test platform of claim 1, wherein the power module comprises:
the system comprises a mains supply interface, a relay switch group, a PLC unit and a switching power supply;
the commercial power interface is used for connecting commercial power and outputting the commercial power to the relay switch group, the PLC unit and the switch power supply;
the relay switch group is connected with the PLC unit and the industrial control computer, and is used for supplying power in multiple paths under the control of the PLC unit and supplying power to the industrial control computer;
the PLC unit controls the multipath power supply of the relay switch group and controls the power supply and the power failure of the relay switch group to the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source in a programmable control mode;
the switch power supply is connected with the PLC unit, the microwave switch group and the microwave input port, and is used for converting commercial power into direct current and supplying power to the PLC unit, the microwave switch group and the microwave input port.
3. The radar integrated test platform of claim 2, wherein the power module comprises: the device comprises an instrument work indicator light, a test platform work indicator light, an instrument work control button, a measurement button, a work timing display screen and a power supply main switch;
the instrument work control button is used for manually controlling the power supply and the power failure of the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source during debugging;
the test platform work indicator lamp is used for indicating the working state of the test platform;
the instrument work control button is used for manually controlling the work of the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source
The measuring button is used for manually controlling the work of the microwave switch group and the microwave input port during debugging so as to complete the manual operation of switching the microwave switch group and the microwave input port;
the working timing display screen is used for timing the working time of the test platform;
the power supply master switch is used for controlling the power supply and the power failure of the commercial power.
4. The radar integrated test platform of claim 1, wherein the microwave assembly comprises:
the directional coupler, the coaxial attenuator, the coaxial isolator and the radio frequency cable;
the directional coupler is matched with the coaxial attenuator to realize the signal power matching of the radar transceiver and the equipment;
the coaxial isolator is connected with the coaxial attenuator;
the radio frequency cable is respectively connected with the radar signal, the microwave switch group and the microwave input port and is used for outputting the microwave switch group and the microwave input port after the radar signal power is matched.
5. The radar integrated test platform of claim 2, wherein the switching power supply outputs a dc power supply comprising: 5V 2A direct current, 24V 1A direct current and 24V 2A direct current;
the 5V 2A direct current and the 24V 1A direct current are output to the microwave switch group and the microwave input port;
and the 24V 2 ampere direct current is output to the PLC unit.
6. The radar integrated test platform of claim 2, wherein the relay switch bank comprises: and the four ohm dragon +24V relays respectively output four paths of power supply signals to supply power to the microwave comprehensive tester, the oscilloscope, the universal meter and the signal source.
7. The radar integrated test platform of claim 1, wherein the microwave switch block and the microwave input port comprise:
one end of the detection diode type power probe is connected with the microwave comprehensive tester, and the other end of the detection diode type power probe is connected with the power supply module;
and the detection diode type power probe is internally provided with a detection circuit for outputting an envelope of a detected radio frequency signal.
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