CN109361479A - A kind of automation T/R component test system - Google Patents
A kind of automation T/R component test system Download PDFInfo
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- CN109361479A CN109361479A CN201811482157.7A CN201811482157A CN109361479A CN 109361479 A CN109361479 A CN 109361479A CN 201811482157 A CN201811482157 A CN 201811482157A CN 109361479 A CN109361479 A CN 109361479A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
Abstract
The present invention relates to a kind of automation T/R component test systems, belong to detections of radar equipment technical field.It include Frequency Synthesizer, waveform generator, four-in-one receiver, communication controller, from major software etc.；Waveform generator is direct digital synthesiser DDS；The signal source of clock of Frequency Synthesizer provides the work clock 15MHz of waveform generator, communication controller and analog-digital converter；Local oscillation signal source provides four-in-one receiver local oscillation signal；The oriented coupler of exciting signal source leads directly to end and coaxial switch S1~S9 and provides pumping signal and analog echo signal for tested T/R component；Exciting signal source provides test signal by the coupled end of directional coupler, power splitter 1 for tested T/R component, and provides reference signal progress system calibration for system；It can be automatically performed switching, data storage, calculating and the correction value write-in in all channels and frequency point, reduce human intervention, occupancy instrument is few, and high quality, high efficiency test, operation and maintenance is conveniently.
Description
Technical field
The present invention relates to a kind of automation T/R component test systems, belong to detections of radar equipment technical field.
Background technique
T/R component is the indispensable core component of phased-array radar, and performance quality directly affects radar transmit-receive system
Work quality.As the core component of radar, the performance indicator that T/R component must be checked and accepted is especially more.Traditional test T/R component
Test equipment involved by performance indicator includes: power module, frequency spectrograph, Pulse vector network analyzer, signal source, pulse
Generator, power meter and computer etc.；Do not only take up a large amount of instrument and meter resources, and these test equipments using when require people
Work calibrated channel, setting parameter switch tested channel, calculate correction value, write-in correction value and record test result；Early-stage preparations
Heavy workload, test and calibration process are quite cumbersome, cause production efficiency low, and maintenance cost is high.Therefore, it is highly desirable to research and develop
A kind of to utilize radar own components, configuration standard general-purpose interface connects computer, communication controller, frequency spectrum by router
Instrument can be automatically performed switching, data storage, calculating and the correction value write-in in all channels and all frequency points, greatly reduce people
To intervene, high-volume, high quality, high efficiency test are realized, operation and maintenance easily automates T/R component test system.
Summary of the invention
It is an object of the present invention in view of the above shortcomings of the prior art, provide a kind of utilization radar own components, configuration
Standardized universal interface and from major software, connects computer, communication controller, frequency spectrograph by router, can be automatically performed
Switching, data storage, calculating and the correction value write-in of all channels and all frequency points, greatly reduce human intervention, few to occupy
Instrument resource, realizes high-volume, high quality, high efficiency test, and operation and maintenance easily automates T/R component test system；
It solves traditional test and occupies a large amount of instrument and meter resources, manual intervention is more, and preliminary preparation amount is big, test operation and equipment dimension
Protect cumbersome, the low problem of production efficiency.
The present invention is to realize above-mentioned purpose by the following technical solutions:
A kind of automation T/R component test system, it includes Frequency Synthesizer, waveform generator, four-in-one receiver, Communication Control
Device, analog-digital converter, directional coupler, coaxial switch, power splitter, router, high power attenuator, power module, ventilation dissipate
Hot systems, human-computer interaction interface, from major software；
It is characterized by: waveform generator is Direct Digital Frequency Synthesizers DDS, intermediate frequency test signal and pumping signal are generated,
It exports after filter and amplification to Frequency Synthesizer；
Frequency Synthesizer includes signal source of clock, local oscillation signal source, exciting signal source；Signal source of clock provides waveform generator, communication
The work clock 15MHz of controller and analog-digital converter；Local oscillation signal source provides local oscillation signal for receiver；Exciting signal source is logical
It crosses the straight-through end of directional coupler and coaxial switch and provides pumping signal and analog echo signal for tested T/R component；Pumping signal
Source also provides test signal by the coupled end of directional coupler, power splitter 1 for tested T/R component, and provides benchmark for system
Signal carries out system calibration；
Four-in-one receiver can emit signal to two-way echo-signal, all the way simultaneously and reference signal progress low noise is put all the way
Greatly, frequency-selective filtering, it is lower mixing, intermediate frequency filtering amplification, formed 56.25MHz intermediate-freuqncy signal send analog-digital converter carry out analog/digital and
Electrical/optical conversion；
Analog-digital converter is made of modulus switching device and electrooptical device, and modulus switching device will be in the 56.25MHz of input
The digital signal that frequency analog signal passes through 15MHz clock signal samples, is converted to 14, then will be digital by electrooptical device
Signal is sent to communication controller in the form of light；
The logic control circuit of communication controller acquires mould as terminal data using FPGA programmable logic device integrated circuits
Block, complete paired data storage circuit, photoelectric conversion, the acquisition of I/Q data, the configuration of network communication and control and various triggerings
Control；FPGA programmable logic device integrated circuits and computer communication obtain control command, and forward T/R component, four-in-one
The status information of receiver, Frequency Synthesizer, waveform generator, analog-digital converter, and instrument is controlled by network interface, it reads
The I/Q data for taking, handling the transmission of analog-digital converter optical fiber pass through the human-computer interaction interface interaction display of computer；It provides simultaneously
The clock signal of system work；
Directional coupler provides the radiofrequency signal that Frequency Synthesizer generates to pumping signal, analogue echo letter through straight-through hold for MUT module under test
Number, coupled end provides test signal for MUT module under test, provides reference signal progress system calibration for platform；
Switching of the coaxial switch S1 for pumping signal and analog echo signal；Coaxial switch S2 is for pumping signal and test letter
Number switching；Coaxial switch S3~S7 is used to emit the switching of signal and analog echo signal；Coaxial switch S8 is used for five road moulds
The switching of quasi- echo-signal, coaxial switch S9 are used to emit the switching of signal path；
Power splitter includes power splitter 1 and power splitter 2, and power splitter 1 will be for that will motivate coupled signal function to be divided into two-way, all the way as being
System RF test signal, is used as system radio frequency reference signal all the way；Power splitter 2 is used to give the transmitting signal function point of receiver
At two-way, it is used as internal detection all the way, is used as external meters all the way and detects；
Four-in-one receiver will carry out space isolation by cavity between four receiving channels, and it is dry to reduce the radiation of interchannel space
It disturbs；By the control line in different channels and power supply line, layering, the signal cross-talk and control for reducing interchannel are believed in micro-strip plate
Number, interference of the power supply signal to radiofrequency signal；By micro-strip plate buried blind via, reduces control signal and power supply signal and radiated from ground
Each road radiofrequency signal of crosstalk realizes the high-isolation characteristic between receiving channel；
High power attenuator is used to will enter into the high-power transmitting signal decaying 50dB of tested T/R component, prevents from burning out transmitting
The low-power device of branch.
The beneficial effect of the present invention compared with prior art is:
Automation T/R component test system utilizes the Frequency Synthesizer of radar, waveform generator, four-in-one receiver, Communication Control
Device, analog-digital converter, coaxial switch, power splitter, configuration standard general-purpose interface and from major software pass through router connection and calculate
Machine, communication controller and frequency spectrograph, realization be automatically performed parameter setting, DATA REASONING and data exchange, be not necessarily to manual intervention, one
Key tests all technical indicators, automatically switches frequency point and channel, and save test result in real time, such as unexpected interrupt test, can be again
Secondary importing data；It is completed and automatically generates electronic report forms at once and intuitively show.High-isolation coaxial switch is selected, is effectively reduced
Receiving channel and transmission channel electromagnetic interference mutual when switching.Has high-isolation spy between four-in-one receiver channel
Property, substantially increase the stability of test signal.Pass through waveform generator, Frequency Synthesizer, four-in-one receiver, analog-digital converter mould
Quasi- radar complete machine working environment, with more practical representativeness, so that index test is more acurrate, maintenance, maintenance are more convenient, ensure that
Test job efficiency.Automation T/R component test system, greatly reduces human intervention, seldom occupies instrument resource, realizes big
In batches, high quality, high efficiency test, operation and maintenance are simple and convenient.It solves traditional test and occupies a large amount of instrument and meter resources,
Manual intervention is more, and preliminary preparation amount is big, and test operation and plant maintenance are cumbersome, the low problem of production efficiency.
Detailed description of the invention
Fig. 1 is a kind of overall work schematic illustration for automating T/R component test system；
Fig. 2 is a kind of operation principle schematic diagram of waveform generator for automating T/R component test system；
Fig. 3 is a kind of operation principle schematic diagram of four-in-one receiver for automating T/R component test system；
Fig. 4 is a kind of operation principle schematic diagram of communication controller for automating T/R component test system；
Fig. 5 is the control flow schematic diagram of a kind of computer for automating T/R component test system and communication controller；
Fig. 6 is a kind of operation principle schematic diagram of analog-digital converter for automating T/R component test system；
Fig. 7 is a kind of operation principle schematic diagram of man machine operation interface for automating T/R component test system.
Specific embodiment
The embodiment of automation T/R component test system is described in further detail with reference to the accompanying drawing (referring to
Fig. 1~7):
A kind of automation T/R component test system, it includes Frequency Synthesizer, waveform generator, four-in-one receiver, Communication Control
Device, analog-digital converter, directional coupler, coaxial switch, power splitter, router, high power attenuator, power module, ventilation dissipate
Hot systems, human-computer interaction interface, from major software；
Waveform generator is Direct Digital Frequency Synthesizers DDS, intermediate frequency test signal and pumping signal is generated, after filter and amplification
It exports to Frequency Synthesizer；
Frequency Synthesizer includes signal source of clock, local oscillation signal source, exciting signal source；Signal source of clock provides waveform generator, communication
The work clock 15MHz of controller and analog-digital converter；Local oscillation signal source provides local oscillation signal for receiver；Exciting signal source is logical
It crosses the straight-through end of directional coupler and coaxial switch and provides pumping signal and analog echo signal for tested T/R component；Pumping signal
Source also provides test signal by the coupled end of directional coupler, power splitter 1 for tested T/R component, and provides benchmark for system
Signal carries out system calibration；
Four-in-one receiver can emit signal to two-way echo-signal, all the way simultaneously and reference signal progress low noise is put all the way
Greatly, frequency-selective filtering, it is lower mixing, intermediate frequency filtering amplification, formed 56.25MHz intermediate-freuqncy signal send analog-digital converter carry out analog/digital and
Electrical/optical conversion；
Analog-digital converter is made of modulus switching device and electrooptical device, and modulus switching device will be in the 56.25MHz of input
The digital signal that frequency analog signal passes through 15MHz clock signal samples, is converted to 14, then will be digital by electrooptical device
Signal is sent to communication controller in the form of light；
The logic control circuit of communication controller acquires mould as terminal data using FPGA programmable logic device integrated circuits
Block, complete paired data storage circuit, photoelectric conversion, the acquisition of I/Q data, the configuration of network communication and control and various triggerings
Control；FPGA programmable logic device integrated circuits and computer communication obtain control command, and forward T/R component, four-in-one
The status information of receiver, Frequency Synthesizer, waveform generator, analog-digital converter, and instrument is controlled by network interface, it reads
The I/Q data for taking, handling the transmission of analog-digital converter optical fiber pass through the human-computer interaction interface interaction display of computer；It provides simultaneously
The clock signal of system work；
Directional coupler provides the radiofrequency signal that Frequency Synthesizer generates to pumping signal, analogue echo letter through straight-through hold for MUT module under test
Number, coupled end provides test signal for MUT module under test, provides reference signal progress system calibration for platform；
Switching of the coaxial switch S1 for pumping signal and analog echo signal；Coaxial switch S2 is for pumping signal and test letter
Number switching；Coaxial switch S3~S7 is used to emit the switching of signal and analog echo signal；Coaxial switch S8 is used for five road moulds
The switching of quasi- echo-signal, coaxial switch S9 are used to emit the switching of signal path；
Power splitter includes power splitter 1 and power splitter 2, and power splitter 1 will be for that will motivate coupled signal function to be divided into two-way, all the way as being
System RF test signal, is used as system radio frequency reference signal all the way；Power splitter 2 is used to give the transmitting signal function point of receiver
At two-way, it is used as internal detection all the way, is used as external meters all the way and detects；
Four-in-one receiver will carry out space isolation by cavity between four receiving channels, and it is dry to reduce the radiation of interchannel space
It disturbs；By the control line in different channels and power supply line, layering, the signal cross-talk and control for reducing interchannel are believed in micro-strip plate
Number, interference of the power supply signal to radiofrequency signal；By micro-strip plate buried blind via, reduces control signal and power supply signal and radiated from ground
Each road radiofrequency signal of crosstalk realizes the high-isolation characteristic between receiving channel；
High power attenuator is used to will enter into the high-power transmitting signal decaying 50dB of tested T/R component, prevents from burning out transmitting
The low-power device of branch (referring to Fig. 1~7).
The effect of each device of automation T/R component test system:
Human-computer interaction interface is responsible for completing the data processing and display to communication controller.
Power module is used to provide power supply required for work to platform and T/R component.
Router is for the data exchange between frequency spectrograph, computer and communication controller.
Aeration radiation system is used to radiate to all plug-in units of test macro and high power attenuator, to improve test macro
Reliability.
Waveform generator uses Direct Digital Frequency Synthesizers DDS, generates intermediate frequency test signal and pumping signal, and waveform produces
Waveform library data are transferred to memory using computer and switch control serial ports by raw device；When work, by FPGA programmable logic
Device integrated circuit reads the control data for being stored in memory, controls Direct Digital Frequency Synthesizers DDS, line needed for generating
Shape/NLFM signal, exports after filter and amplification.FPGA programmable logic device integrated circuits and Direct Digital frequency
Synthesizer DDS uses parallel connection mode, control needed for generating Direct Digital Frequency Synthesizers DDS by autonomous software programming
Word and address, various signal waveforms needed for Direct Digital Frequency Synthesizers DDS exports tested T/R component.
The logic control circuit of communication controller uses the programmable logic device integrated circuits of altera corp
EP4SGX180FF35I4 as terminal data acquisition module, complete paired data storage circuit, photoelectric conversion, the acquisition of I/Q data,
The configuration and control of network communication and various triggerings control.By with computer communication, obtain control command, forward T/R group
The status information of part, receiver, Frequency Synthesizer, waveform generator, analog-digital converter；Control command is obtained, network interface pair is passed through
Instrument is controlled；It reads the I/Q data of analog-digital converter optical fiber transmission and handles, forward Computer display；Offer system institute
Working sequence signal.
Analog-digital converter uses high performance modulus switching device and electrooptical device, by the 56.25MHz intermediate frequency of input
Analog signal is converted to 14 digital signals with 15MHz clock signal samples and passes through electrooptical device for signal with light shape
Formula is sent to communication controller.
Man machine operation interface is mainly realized by network interface to entire test equipment, T/R component and instrument by computer
Control.Man machine operation interface is constructed using C++ Builder5, and man machine operation interface is used with communication controller and frequency spectrograph
Network interface is connected by router.Network transmission uses ICP/IP protocol, transmission rate 100M；Make with the transmission of control panel data
With custom command, standard SCPI order is used with the transmission of frequency spectrograph data.
The course of work of automation T/R component test system is as follows:
Before test, man machine operation interface is first passed through at platform alignment interface and completes reception, transmitting, detection calibration.
When receiving channel 1 is calibrated, platform echo port 1 is shorted with power port 1, forms closure receiving channel.Frequency Synthesizer
The oriented coupler of the radiofrequency signal of generation leads directly to end, attenuator 2, coaxial switch S8, S3, high power attenuator SJ4, four-in-one
Receiver and the analog echo signal of formation, oriented coupler coupled end, power splitter 1 formed reference signal, send respectively to
It after the processing of four-in-one receiver, forms benchmark intermediate-freuqncy signal and receiving intermediate frequency signal gives analog-digital converter, through A/D transformation and light
Communication controller is given after electricity conversion.The I/Q optical signal received is converted to electric signal by communication controller, is sent by network to meter
Calculation machine；The data received unpack being reduced by computer receives I/Q data and benchmark I/Q data, to reception I/Q data
It calculates to form reception gain calibration value by formula, after receiving I/Q data and benchmark I/Q data progress ratio calculation, be formed
Receiving phase calibration value；Similarly complete the calibration of all 5 tunnels receiving channel.
When 1 phase alignment of transmission channel, platform excitation port and power port 1 are shorted, form closure transmission channel.Frequency synthesizer
Device generate the oriented coupler of radiofrequency signal lead directly to end, coaxial switch S1, exciting amplifier, high power attenuator SJ4, coaxially
Switch S3, S9, attenuator 3, power splitter 2, four-in-one receiver and the analog transmissions signal of formation, are coupled by directional coupler
The reference signal that end, power splitter 1 are formed is sent respectively to the processing of four-in-one receiver, is formed in benchmark intermediate-freuqncy signal and reception
Frequency signal gives analog-digital converter, gives communication controller after A/D transformation and photoelectric conversion.The I/ that communication controller will receive
Q optical signal is converted to electric signal, is sent by network to computer.The data received unpack by computer is reduced into transmitting
I/Q data and benchmark I/Q data form transmitter phase calibration after carrying out ratio calculation to transmitting I/Q data and benchmark I/Q data
Value；Similarly complete all 5 road transmission channel phase alignments.
It when the transmission channel calibration of power, is referred to the 5T/5R component of a qualified, it is every to read 5 road transmission channels
The transmitting I/Q data of the performance number and record of a frequency point, computer reduction take 5 road function of the range value formed after mean value and record
After rate value corresponds ratio, that is, form transmission power calibration value.
When TCH test channel 1 is calibrated, platform excitation port and power port 1 are shorted, form closure TCH test channel.Frequency Synthesizer produces
The oriented coupler coupled end of raw radiofrequency signal, power splitter 1, attenuator 1, coaxial switch S2, four-in-one receiver and formation
Analog test signal, oriented coupler coupled end, power splitter 1 formed reference signal, sent respectively to four-in-one receiver,
Benchmark intermediate-freuqncy signal is formed after processing and test intermediate-freuqncy signal gives analog-digital converter, is sent after A/D transformation and photoelectric conversion
To communication controller, the I/Q optical signal received is converted to electric signal by communication controller, is sent by network to computer；It calculates
The data received unpack by machine is reduced into test I/Q data and benchmark I/Q data, passes through formula to test I/Q data
It calculates and forms test gain calibration value, form test phase school after carrying out ratio calculation to test I/Q data and benchmark I/Q data
Quasi- value；Similarly complete the calibration of all 5 roads TCH test channel.
When test, first passes through man machine operation interface and select tested T/R component states in working method frame, click platform net
Network connection and platform courses order send instruction, and communication controller is decoded into RS422 signal and is transmitted to T/R group after receiving instruction
Part.
When receiving, testing measurement, switching coaxial switch S1~S7 to receiving channel switches coaxial switch S8 selection and is tested
T/R component receiving channel；When emission measurement, switching coaxial switch S1~S7 to transmission channel switches coaxial switch S9 and selects quilt
Test T/R component transmission channel." testing whole indexs " is clicked on man machine operation interface can one-key operation reception gain, phase
Gain, phase, transmission power, phase, forward position, rear edge, top drop, pulsewidth index test are tested in position；It clicks " efficiency calculation "
Emission effciency is completed to calculate；By computer and frequency spectrograph network communication, the frequency spectrograph interface " ginseng in man machine operation interface is clicked
Transmitting signal improvement factor, harmonics restraint and the measurement for receiving noise coefficient can be completed in number setting ", " calibration ", " measurement ".
The 56.25MHz intermediate-freuqncy signal of Frequency Synthesizer input exports after uppermixing, filtering, amplification continuous with internal local oscillator
Signal generates pumping signal in the case where emitting square wave modulating action, defeated by measured piece by giving measured piece after switch selection state
High-frequency signal out gives four-in-one receiver plug-in unit after high power attenuator, coaxial switch selection, by four-in-one receiver
Signal after mixing and filtering gives analog-digital converter and completes A/D conversion and photoelectric conversion, is transferred to I/Q data by optical fiber logical
Controller processing is interrogated, operation control platform is ultimately feeding to and shows.Directional couple is wherein passed through by the pumping signal that Frequency Synthesizer generates
The signal of device coupled end gives communication controller as reference signal by receiver, analog-digital converter and carries out system calibration；Frequently
Clock signal needed for comprehensive device provides system work；Clock signal needed for communication controller generation system, control signal and
With computer communication.
When T/R component receives index measurement, the intermediate-freuqncy signal and Frequency Synthesizer that waveform generator generates, which become under local oscillation signal, is mixed
Frequency generates analog echo signal, and the straight-through end of the oriented coupler of analog echo signal is sent to coaxial switch S1；Coaxial switch S1 choosing
Signal is sent to coaxial switch S8 after selecting reception state；Coaxial switch S8 is used to switch the receiving channel of tested T/R component, then passes through
It is sent after coaxial switch S3~S7 and high power attenuator SJ4~SJ8 to the tested correspondingly received channel of T/R component.Analogue echo letter
Number in T/R component after clipping, low noise and filtering, shifted device, function allocation/synthesizer 1 form two-way and receive signal through being isolated
It is sent after device to four-in-one receiver.Signal 1,2 is received to amplify in four-in-one receiver through radio frequency amplification filtering, mixing, intermediate frequency
Reception echo signal of intermediate frequency is formed after filtering to send to analog-digital converter.Analog-digital converter to the reference signal of input, receive intermediate frequency
Signal 1,2 is sampled through A/D, formation I/Q digital signal is sent to communication controller after digital filtering.The I/ that communication controller will receive
Q optical signal is converted to electric signal, is sent by network to computer.Computer will receive I/Q data to be compared with benchmark I/Q data
Value obtains receiving phase value after calculating, then connects with the receiving phase calibration value of computer storage than obtaining tested T/R component after difference
Receive phase value；I/Q value will be received and reception gain calibration value obtains T/R component reception gain after formula scales；
When T/R component launching target measures, the intermediate-freuqncy signal that waveform generator generates becomes under local oscillation signal with Frequency Synthesizer is mixed production
Raw pumping signal, the straight-through end of the oriented coupler of pumping signal is sent to coaxial switch S1；Coaxial switch S1 selects emission state
Signal is sent to exciting amplifier afterwards, is sent after amplification filtering to coaxial switch S2；Coaxial switch S2 will after selecting emission state
Signal is sent to the excitation input port of tested T/R component；In T/R component internal after function point amplification, five road 250W or more are formed
High-power signal is sent after power output port is sent and decays 50dB to five high power attenuator SJ4~SJ8 in platform to coaxial
Switch S3~S7；Signal is sent to coaxial switch S9 after coaxial switch S3~S7 selection emission state；Coaxial switch S9 is for cutting
The transmission channel for changing tested T/R component is sent all the way after power splitter 2 to external detection mouth, is used for Meter Test, is sent all the way to four
Unify receiver；Emission medium-frequency echo is formed after radio frequency amplification filtering, mixing, intermediate frequency amplification filtering in four-in-one receiver
Signal is sent to analog-digital converter；Analog-digital converter samples the benchmark intermediate-freuqncy signal of input, emission medium-frequency signal 1,2 through A/D, number
I/Q digital signal is formed after word filtering to send to communication controller.The I/Q optical signal received is converted to telecommunications by communication controller
Number, it is sent by network to computer.Computer will emit after I/Q data carry out ratio calculation with benchmark I/Q data and be emitted
Phase value, then the transmitting calibration value stored with computer is than obtaining tested T/R component transmitter phase value after difference；I/Q value will be emitted
Tested T/R component power value is obtained after formula scales with transmission power calibration value；Waveform is a little formed by taking to transmitting I/Q value
Data, then pulse width, the forward position, rear edge, top-down indicator of tested T/R component are obtained by time-domain calculation；Click power supply inquiry
And efficiency calculation, the performance number of the automatic voltage for obtaining power supply, current parameters value and T/R component calculate emission effciency automatically
Index.
When T/R module testing index measurement, the intermediate-freuqncy signal and Frequency Synthesizer that waveform generator generates, which become under local oscillation signal, is mixed
Frequency generates test signal, and the coupled end of the test oriented coupler of signal is sent to power splitter 1, after function point, is used as benchmark all the way
Signal gives four-in-one receiver, and another way is sent after attenuator to coaxial switch S2；After coaxial switch S2 selects test mode
Signal is sent to the excitation input port of tested T/R component；It is shifted in T/R component internal after clipping, low noise and filtering
Device, function allocation/synthesizer form two-way test signal and are sent after isolator to four-in-one receiver.Test signal 1,2 connects in four-in-one
Test echo signal of intermediate frequency is formed after radio frequency amplification filtering, mixing, intermediate frequency amplification filtering in receipts machine to send to analog-digital converter.Mould
Number converter forms I/Q digital signal after A/D sampling, digital filtering and send to reference signal, the test intermediate-freuqncy signal 1,2 of input
To communication controller.The I/Q digital signal received is converted to data by communication controller, is sent by network to computer.It calculates
Machine will obtain test phase value, then the test with computer storage after testing I/Q data and benchmark I/Q data progress ratio calculation
Phase calibration values are than obtaining tested T/R module testing phase value after difference；Test I/Q value is changed with test gain calibration value through formula
T/R module testing gain is obtained after calculation.
The above is presently preferred embodiments of the present invention, and the example above explanation not make for the essence of the present invention by content
Limitation in any form, technology of the person of an ordinary skill in the technical field after having read this specification according to the present invention
Essence is to any simple modification or deformation made by the above specific embodiment, and the technology contents possibly also with the disclosure above
The equivalent embodiment of equivalent variations is changed or is modified to, all of which are still within the scope of the technical scheme of the invention, without departing from
The spirit and scope of the invention.
Claims (1)
1. a kind of automation T/R component test system, it includes Frequency Synthesizer, waveform generator, four-in-one receiver, Communication Control
Device, analog-digital converter, directional coupler, coaxial switch, power splitter, router, high power attenuator, power module, ventilation dissipate
Hot systems, human-computer interaction interface, from major software；
It is characterized by: waveform generator is Direct Digital Frequency Synthesizers DDS, intermediate frequency test signal and pumping signal are generated,
It exports after filter and amplification to Frequency Synthesizer；
Frequency Synthesizer includes signal source of clock, local oscillation signal source, exciting signal source；Signal source of clock provides waveform generator, communication
The work clock 15MHz of controller and analog-digital converter；Local oscillation signal source provides local oscillation signal for receiver；Exciting signal source is logical
It crosses the straight-through end of directional coupler and coaxial switch and provides pumping signal and analog echo signal for tested T/R component；Pumping signal
Source also provides test signal by the coupled end of directional coupler, power splitter 1 for tested T/R component, and provides benchmark for system
Signal carries out system calibration；
Four-in-one receiver can emit signal to two-way echo-signal, all the way simultaneously and reference signal progress low noise is put all the way
Greatly, frequency-selective filtering, it is lower mixing, intermediate frequency filtering amplification, formed 56.25MHz intermediate-freuqncy signal send analog-digital converter carry out analog/digital and
Electrical/optical conversion；
Analog-digital converter is made of modulus switching device and electrooptical device, and modulus switching device will be in the 56.25MHz of input
The digital signal that frequency analog signal passes through 15MHz clock signal samples, is converted to 14, then will be digital by electrooptical device
Signal is sent to communication controller in the form of light；
The logic control circuit of communication controller acquires mould as terminal data using FPGA programmable logic device integrated circuits
Block, complete paired data storage circuit, photoelectric conversion, the acquisition of I/Q data, the configuration of network communication and control and various triggerings
Control；FPGA programmable logic device integrated circuits and computer communication obtain control command, and forward T/R component, four-in-one
The status information of receiver, Frequency Synthesizer, waveform generator, analog-digital converter, and instrument is controlled by network interface, it reads
The I/Q data for taking, handling the transmission of analog-digital converter optical fiber pass through the human-computer interaction interface interaction display of computer；It provides simultaneously
The clock signal of system work；
Directional coupler provides the radiofrequency signal that Frequency Synthesizer generates to pumping signal, analogue echo letter through straight-through hold for MUT module under test
Number, coupled end provides test signal for MUT module under test, provides reference signal progress system calibration for platform；
Switching of the coaxial switch S1 for pumping signal and analog echo signal；Coaxial switch S2 is for pumping signal and test letter
Number switching；Coaxial switch S3~S7 is used to emit the switching of signal and analog echo signal；Coaxial switch S8 is used for five road moulds
The switching of quasi- echo-signal, coaxial switch S9 are used to emit the switching of signal path；
Power splitter includes power splitter 1 and power splitter 2, and power splitter 1 will be for that will motivate coupled signal function to be divided into two-way, all the way as being
System RF test signal, is used as system radio frequency reference signal all the way；Power splitter 2 is used to give the transmitting signal function point of receiver
At two-way, it is used as internal detection all the way, is used as external meters all the way and detects；
Four-in-one receiver will carry out space isolation by cavity between four receiving channels, and it is dry to reduce the radiation of interchannel space
It disturbs；By the control line in different channels and power supply line, layering, the signal cross-talk and control for reducing interchannel are believed in micro-strip plate
Number, interference of the power supply signal to radiofrequency signal；By micro-strip plate buried blind via, reduces control signal and power supply signal and radiated from ground
Each road radiofrequency signal of crosstalk realizes the high-isolation characteristic between receiving channel；
High power attenuator is used to will enter into the high-power transmitting signal decaying 50dB of tested T/R component, prevents from burning out transmitting
The low-power device of branch.
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