CN105242246A - Automatic radar T/R (Transmitter/Receiver) assembly testing system and method thereof - Google Patents

Automatic radar T/R (Transmitter/Receiver) assembly testing system and method thereof Download PDF

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Publication number
CN105242246A
CN105242246A CN201510566320.8A CN201510566320A CN105242246A CN 105242246 A CN105242246 A CN 105242246A CN 201510566320 A CN201510566320 A CN 201510566320A CN 105242246 A CN105242246 A CN 105242246A
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radar
assembly
state
place
phase
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陈伯孝
曾小路
王晶
杨明磊
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Xidian University
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Xidian University
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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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The invention discloses an automatic radar T/R (Transmitter/Receiver) assembly testing system and a method thereof. The main idea is: a radar T/R testing hardware platform is built, a vector network analyzer is initialized, an address, a parameter flag bit, a clock state, a channel label, a phase shifter state, a starting frequency, a stopping frequency, a scanning point number, a general testing state number, a storage file title character string, a parameter name character string, a file name character string and a file storage path character string are set, a port transmission coefficient is further built on the vector network analyzer, and a parallel port control clock of the radar T/R assembly is loaded; and then, phase data, gain data and standing-wave ratio data of the radar T/R assembly in a phase shifting state and in a degradation state are acquired respectively, the data are then processed, and the standing-wave ratio, 0-state phase, 0-state degradation, 0-state consistency phase and phase shifting precision of the radar T/R assembly in the phase shifting state and in the degradation state at a frequency point are acquired respectively, and storage by an automatic storage module is then carried out.

Description

A kind of radar T/R assembly Auto-Test System and method thereof
Technical field
The invention belongs to Radar Technology field, in particular to a kind of radar T/R assembly Auto-Test System and method thereof, i.e. radar transmitter/receiver (TransmitterandReceiver) assembly Auto-Test System and a method thereof, is applicable to the automatic test of Active Phased Array Radar T/R assembly.
Background technology
At present, Active Phased Array Radar is in the main trend of world today's research of radar and development.In airborne, the positional information that Active Phased Array Radar can not only obtain target (comprises distance, position angle, the angle of pitch), the speed of target can also be obtained, shape information, navigate missile is attacked target, directly determine the operational performance of a frame fighter plane, typical phased-array radar is the transmitting and receiving with control radar antenna beam while of phase shifter, each antenna radiation unit of this phased-array radar is made up of the Active Phased Array of a receiver and an emission power amplifier, usually radar can be received, signal and there is the assembly that enlarging function and the circuit function that adapts with it combine be called for short radar T/R assembly.
Active Phased Array Radar is by radar T/R assembly, antenna element and passive feeder system composition, wherein, radar T/R assembly carries the main power amplification transmitted, receive the low noise enlarge leadingly of feeble signal, Wave beam forming and the width phase control function needed for scanning, array lined up by radar T/R assembly by radar front, this array is received by Wave beam forming and transmits, and then use receiver to carry out frequency transformation to transmitting of this reception, obtain digital signal, finally realize measuring object to this digital signal by signal transacting and data processing successively.Therefore, the performance direct relation of radar T/R assembly the performance of whole radar.
In order to represent the complete performance of radar T/R assembly comprehensively, must strictly test before radar T/R assembly loads radar system, surveying instrument comprises peak power meter, vector network analyzer, frequency spectrograph three microwave apparatus; The electrical specifications of this radar T/R assembly is very many simultaneously, comprises power, network, frequency spectrum, noise, input and output standing-wave ratio, switching time, phase shifting accuracy, attenuation accuracy, phase equalization, gain consistance.But a radar has hundreds of even thousands of radar T/R assemblies on ordinary meaning, make test assignment amount very large, even cause test assignment may complete by hand hardly.Therefore, in the R&D and production process of Active Phased Array Radar, the automatic test technology of radar T/R assembly is one of the gordian technique affecting product development, manufacturing schedule and product quality, makes the automatic test technology of research and development radar T/R assembly particularly important.
Summary of the invention
For the deficiency that above prior art exists, the object of the invention is to propose a kind of radar T/R assembly Auto-Test System and method thereof, this invention can develop corresponding Auto-Test System for Active Phased Array Radar T/R assembly, complete the automatic test to the following index of radar T/R assembly, simultaneously for the ease of observing final testing result, by process, last result is stored with the form of Excel form.
To achieve these goals, technical thought of the present invention is: first utilize SCPI instruction set by the automatic control of LabVIEW programming realization surveying instrument vector network analyzer and real time data acquisition, echo; Then T/R assembly sent into by the clock normally working required by parallel port by T/R makes it normally work; Under the prerequisite finally normally worked at T/R, the collection utilizing vector network analyzer to realize data processes with synchronous, stores.
For reaching above-mentioned technical purpose, the present invention adopts following technical scheme to be achieved.
Technical scheme one:
A kind of radar T/R assembly Auto-Test System, is characterized in that, comprising: power supply, radar T/R assembly, vector network analyzer, main control computer;
Main control computer, sent the calibration file be stored on main control computer disk to vector network analyzer by general purpose interface bus, make vector network analyzer complete calibration, then complete the vector network analyzer of calibration to radar T/R assembly launched microwave signal, while radar T/R assembly receives the voltage that provides of power supply or electric current by wire, also the control clock signal that main control computer is sended over by parallel port control clock line is received, then radar T/R assembly is to the phase place of the microwave signal received, amplitude carries out phase change respectively, amplitude fading process, obtain the microwave signal after processing, and the microwave signal after process is sent to vector network analyzer, vector network analyzer gathers the phase place between the microwave signal after microwave signal and process, changes in amplitude data, again by the phase place between the microwave signal after the microwave signal that collects and process, changes in amplitude data separate general purpose interface bus is sent to described main control computer and stores respectively.
Technical scheme two:
2, a kind of radar T/R assembly automatic test approach, based on radar T/R assembly Auto-Test System, described radar T/R assembly Auto-Test System comprises: power supply, radar T/R assembly, vector network analyzer, main control computer, it is characterized in that, described radar T/R assembly automatic test approach comprises the following steps:
Step 1, initialization vector network analyzer, and vector network analyzer address, parameter flag position SF, clock status CS, channel number SS, phase shifter state TS, initial frequency f are set start, stop frequency f stop, number of scan points M, test mode sum N, storage file heading character string, parameter name character string, filename character string and file store path character string;
Step 2, according to the parameter flag position SF of vector network analyzer arranged, vector network analyzer creates the reflection coefficient S of port one when port 2 connects matched load respectively 11, port 2 when connecing matched load port one to the transmission coefficient S of port 2 21, port one when connecing matched load port 2 to the transmission coefficient S of port one 12, port one port 2 when connecing matched load reflection coefficient S 22; And to obtain when described port 2 connects matched load port one respectively to the transmission coefficient S of port 2 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS;
Step 3, when connecing matched load according to described port 2, port one is to the transmission coefficient S of port 2 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS load the parallel port control clock of radar T/R assembly;
Step 4, after radar T/R assembly reads its parallel port control clock, gather respectively radar T/R assembly be in phase-shift states under phase data gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AS;
Step 5, is in the phase data under phase-shift states according to radar T/R assembly gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AScarry out data processing respectively, respectively the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under acquisition phase-shift states under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i;
Wherein, i=f l, l=1,2...M; J=1,2 ... N, M represent the vector network analyzer number of scan points of setting, the vector network analyzer test mode sum that N is arranged, f lrepresent the Frequency point at l analyzing spot place;
Step 6, writes autostore module and stores the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under phase-shift states respectively under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i.
The present invention compared with prior art has the following advantages:
(1) the inventive method can realize the automatic loading of vector network analyzer calibration file and arrange the Lookup protocol of vector network analyzer parameter flag position, start-stop frequency, number of scan points, the total status number of phase shifter, avoids start shooting manual calibration and the manual numerous and diverse operation arranged at every turn;
(2) the present invention utilizes radar T/R assembly autotest program synchro control vector network analyzer and radar T/R assembly, do not need to utilize signal source to produce clock, clock control manually arranges realization by T/R Auto-Test System interface, clock exports and is produced by radar T/R assembly autotest program, radar T/R assembly clock control end is input to by computer parallel port connecting line, simplify testing process, improve automatic test efficiency;
(3) in the present invention, the Real-time Collection of desired data synchronously completes with process, and the result autostore of this desired data is Excel form document, and the processing procedure of desired data is completed automatically by radar T/R assembly autotest program.In addition, test result provides with Excel report form, makes user intuitively can obtain test result.
Accompanying drawing explanation
Fig. 1 is the signal wiring block diagram of a kind of radar T/R assembly Auto-Test System of the present invention;
Fig. 2 is the schematic flow sheet of a kind of radar T/R assembly automatic test approach of the present invention;
Fig. 3 is a kind of radar T/R assembly Auto-Test System host computer interface figure of the present invention;
Fig. 4 is vector network analyzer Two-port netwerk normalized incident-wave and reflection wave definition figure;
Fig. 5 is a kind of radar T/R assembly clock designing flow figure of the present invention;
Fig. 6 is the test result schematic diagram after using the inventive method to load radar T/R assembly clock;
Fig. 7 is the design flow diagram using the inventive method to carry out data storage.
Embodiment
With reference to Fig. 1, be the signal wiring block diagram of a kind of radar T/R assembly Auto-Test System of the present invention, a kind of radar T/R assembly Auto-Test System, is characterized in that, comprising: power supply, device under test, vector network analyzer, main control computer;
Main control computer, sent the calibration file be stored on main control computer disk to vector network analyzer by general purpose interface bus, make vector network analyzer complete calibration, then complete the vector network analyzer of calibration to radar T/R assembly launched microwave signal, while radar T/R assembly receives the voltage that provides of power supply or electric current by wire, also the control clock signal that main control computer is sended over by parallel port control clock line is received, then radar T/R assembly is to the phase place of the microwave signal received, amplitude carries out phase change respectively, amplitude fading process, obtain the microwave signal after processing, and the microwave signal after process is sent to vector network analyzer, vector network analyzer gathers the phase place between the microwave signal after microwave signal and process, changes in amplitude data, again by the phase place between the microwave signal after the microwave signal that collects and process, changes in amplitude data separate general purpose interface bus is sent to described main control computer and stores respectively.
With reference to Fig. 2, it is the schematic flow sheet of a kind of radar T/R assembly automatic test approach of the present invention, this kind of radar T/R assembly automatic test approach, based on radar T/R assembly Auto-Test System, described radar T/R assembly Auto-Test System comprises: power supply, radar T/R assembly, vector network analyzer, main control computer, it is characterized in that, described radar T/R assembly automatic test approach comprises the following steps:
Step 1, initialization vector network analyzer, and vector network analyzer address, parameter flag position SF, clock status CS, channel number SS, phase shifter state TS, initial frequency f are set start, stop frequency f stop, number of scan points M, test mode sum N, storage file heading character string, parameter name character string, filename character string and file store path character string.
Particularly, the surveying instrument that the present invention selects is the vector network analyzer that Agilent company produces, need to calibrate and initial setting up this vector network analyzer before test starts, first time start needs manual calibration vector network analyzer, calibration result is saved as corresponding calibration file, before test starts, main control computer is connected with vector network analyzer by general purpose interface bus (General-PurposeInterfaceBus, GPIB) bus; Device under test, i.e. radar T/R assembly, main control computer, by VISAResourceName.vi, is that vector network analyzer loads calibration file automatically through gpib bus, realizes vector network analyzer calibration robotization;
Then, initialization is carried out to vector network analyzer, by address, the parameter flag position SF of ConfigureMeasurement.vi Lookup protocol vector network analyzer; By the start-stop frequency f of ConfigureFreqStartStop.vi Lookup protocol vector network analyzer s, stop frequency f s; By the number of scan points M of ConfigureSweep.vi Lookup protocol vector network analyzer, arrange with the parameter initialization that this completes vector network analyzer.
With reference to Fig. 3, be a kind of radar T/R assembly Auto-Test System host computer interface figure of the present invention, vector network analyzer address, clock status CS, channel number SS, phase shifter state TS are manually provided with in radar T/R assembly Auto-Test System host computer interface.
Clock status CS comprises standby clock, runs clock two states.
Phase shifter state TS comprises phase-shift states, attenuation state.
Channel number SS:SS=1,2 ... 16, represent the 1st, 2 of radar T/R assembly passage ... 16 labels.
Storage file heading character string: be converted to through " numerical value is changed to decimal character string " control by channel number SS,
Parameter name character string, filename character string and file store path character string provide with the form of character string constant in radar T/R assembly Auto-Test System program; Test mode sum N provides with the form of numeric constant in radar T/R assembly Auto-Test System program.
Step 2, according to the parameter flag position SF of vector network analyzer arranged, vector network analyzer creates the reflection coefficient S of port one when port 2 connects matched load respectively 11, port 2 when connecing matched load port one to the transmission coefficient S of port 2 21, port one when connecing matched load port 2 to the transmission coefficient S of port one 12, port one port 2 when connecing matched load reflection coefficient S 22; And to obtain when described port 2 connects matched load port one respectively to the transmission coefficient S of port 2 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS.
Particularly, the present invention needs the channel performance of instrumentation radar T/R assembly, and namely signal passes through T/R passage later amplitude, phase place change information, with reference to Fig. 4, is Two-port netwerk normalization incidence and the reflection wave definition figure of vector network analyzer;
According to vector network analyzer 4 parameter definition, that is:
S 11the reflection coefficient of port one when representing that port 2 connects matched load;
S 21when representing that port 2 connects matched load, port one is to the transmission coefficient of port 2;
S 12when representing that port one connects matched load, port 2 is to the transmission coefficient of port one;
S 22the reflection coefficient of port 2 when representing that port one connects matched load;
A 1represent vector network analyzer port one incoming signal; a 2vector network analyzer port 2 incoming signal;
B 1represent vector network analyzer port one reflected signal; b 2represent vector network analyzer port 2 reflected signal.
Need measuring-signal through phase place, the changes in amplitude information of Two-port netwerk in the present invention, namely need to apply the transport property of two-port network, so the reflection coefficient S of port one when connecing matched load according to the above port 2 11, port 2 when connecing matched load port one to the transmission coefficient S of port 2 21, port one when connecing matched load port 2 to the transmission coefficient S of port one 12, port one port 2 when connecing matched load reflection coefficient S 22physical significance, the present invention selects described transmission coefficient S 21, and obtain described transmission coefficient S 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS.
Step 3, when connecing matched load according to described port 2, port one is to the transmission coefficient S of port 2 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS load the parallel port control clock of radar T/R assembly.
Particularly, with reference to Fig. 5, be a kind of radar T/R assembly clock designing flow figure of the present invention; According to parameter flag position SF, clock status CS, the channel number SS and phase shifter state TS of vector network analyzer setting, and radar T/R component operation handbook loads radar T/R assembly clock, described radar T/R assembly clock comprises holding state clock, phase-shift states running status and attenuation state clock.Particularly point out, clock module write complete after to carry out strict test in conjunction with radar T/R module data handbook.
Fig. 6 is the test result schematic diagram after using the inventive method to load radar T/R assembly clock, the correctness of control radar T/R assembly clock is the prerequisite that radar T/R assembly normally works, also be the prerequisite of radar T/R module testing, radar T/R assembly is normally worked.
Step 4, after radar T/R assembly reads its parallel port control clock, gather respectively radar T/R assembly be in phase-shift states under phase data gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AS.
Particularly, ReadData.vi function is utilized to read signal in real time by phase place delta data, changes in amplitude data, standing-wave ratio (SWR) data after radar T/R assembly, utilize Express oscillogram in radar T/R assembly Auto-Test System host computer interface, draw the curve map of above-mentioned data, realize the echo of data.
The present invention need to test radar T/R assembly be in phase-shift states and attenuation state respectively under phase place, amplitude, standing-wave ratio (SWR) three kinds of parameters. utilize ReadData.vi function read respectively radar T/R assembly be in phase-shift states under phase data gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AS; Wherein:
Under radar T/R assembly is in phase-shift states:
Phase data:
Gain data:
Standing-wave ratio (SWR) data:
Under radar T/R assembly is in attenuation state:
Phase data:
Gain data: S 21AA=A aAij(i=f l, l=1,2...M; J=1,2 ... N)
Standing-wave ratio (SWR) data:
Wherein, under representing phase-shift states, the phase measurement of radar T/R assembly under frequency i place j state; under representing phase-shift states, the gain measurements of radar T/R assembly under frequency i place j state; under representing phase-shift states, the SWR measurement value of radar T/R assembly under frequency i place j state; under representing attenuation state, the phase measurement of radar T/R assembly under frequency i place j state; A aAijunder representing attenuation state, the gain measurements of radar T/R assembly under frequency i place j state; under representing attenuation state, the SWR measurement value of radar T/R assembly under frequency i place j state; M represents the vector network analyzer number of scan points of setting, the vector network analyzer test mode sum that N is arranged, f lrepresent the Frequency point at l analyzing spot place.
Utilize above 6 groups of data, namely radar T/R assembly phase data, gain data, standing-wave ratio (SWR) data and the radar T/R assembly be under phase-shift states is in phase data, gain data, the standing-wave ratio (SWR) data under attenuation state, and utilizes ConfigureDisplayTrace.vi on vector network analyzer, create 6 different S respectively 21parametric line, then utilizes " Express oscillogram " control to draw out 6 curves respectively in radar T/R assembly host computer interface, realizes the echo of described 6 groups of data.
Step 5, is in the phase data under phase-shift states to radar T/R assembly gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AScarry out data processing respectively, obtain the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under phase-shift states respectively under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i;
Wherein, i=f l, l=1,2...M; J=1,2 ... N, M represent the vector network analyzer number of scan points of setting, the vector network analyzer test mode sum that N is arranged, f lrepresent the Frequency point at l analyzing spot place.
Particularly, under radar T/R assembly is in phase-shift states:
(1) radar T/R assembly is in the standing-wave ratio (SWR) at frequency i place
(2) radar T/R assembly is in the phase place of frequency i place 0 state
(3) radar T/R assembly is in the decay of frequency i place 0 state
(4) radar T/R assembly receiving cable is in the consistance phase place of Frequency point i place 0 state
Δφ i＝±(φ imax-φ imin)/2,(i＝f l,l＝1,2...M)
Wherein, under representing attenuation state, the phase place of radar T/R assembly under frequency i place j state; under representing phase-shift states, the gain of radar T/R assembly under frequency i place j state; under representing phase-shift states, the standing-wave ratio (SWR) of radar T/R assembly under frequency i place j state; under representing phase-shift states, when phase shifting control code is 0, the phase place of radar T/R assembly at frequency i place; φ imaxrepresent the phase place maximal value of frequency i receiving cable 0 state, φ iminrepresent the phase minimum of frequency i receiving cable 0 state, Δ φ irepresent the degree of fluctuation of radar T/R assembly in Frequency point i place phase place; f lrepresent the Frequency point at l analyzing spot place, it can by initial frequency f start, stop frequency f stop, number of scan points M tries to achieve by following formulae discovery: f l = f s t a r t + ( l - 1 ) · ( f s t o p - f s t a r t ) M - 1 , ( l = 1 , 2 ... M ) , M represents the vector network analyzer number of scan points of setting, and N represents test mode sum.
(5) radar T/R assembly is at the phase shifting accuracy RMS at frequency i place i:
RMS i = Σ j = 1 N ( φ i j - φ ij 0 ) 2 N ( i = f l , l = 1 , 2 ... M ; j = 1 , 2 ... N )
Wherein,
Wherein, under representing phase-shift states, when phase shifting control code is 0, the phase place of radar T/R assembly at frequency i place; under representing phase-shift states, the phase place of radar T/R assembly under frequency i place j state; φ ijrepresent the phase measurement in assigned frequency point i place j state, under representing phase-shift states, with for reference 0 state phase, radar T/R assembly is in the phase place theoretical value of assigned frequency point i place j state; represent under phase-shift states, when phase shifting control code is 0, radar T/R assembly in the phase place of frequency i place 1 state, 0 state phase namely under phase-shift states;
Under radar T/R assembly is in attenuation state:
(1) radar T/R assembly is in the standing-wave ratio (SWR) at frequency i place S A i : S A i = 1 N · Σ j = 1 N S 21 A S i j ( i = f l , l = 1 , 2 ... M )
(2) radar T/R assembly is in the phase place of frequency i place 0 state
(3) radar T/R assembly is in the decay of frequency i place 0 state
(4) receiving cable is at the consistance gain delta G of Frequency point i place 0 state i:
ΔG i＝±(G imax-G imin)/2,(i＝f l,l＝1,2...M)
Wherein, S 21ASijunder representing attenuation state, the standing-wave ratio (SWR) of radar T/R assembly under frequency i place j state; under representing attenuation state, the phase place of radar T/R assembly under frequency i place j state; under representing phase-shift states, the gain of radar T/R assembly under frequency i place j state; S 21AAi1under representing attenuation state, when adjustable attenuation code is 0, the gain of radar T/R assembly at frequency i place; G imaxrepresent the gain maximum of frequency i place receiving cable 0 state, G iminrepresent the gain minimum value of frequency i place receiving cable 0 state, Δ G irepresent the gain fluctuation degree of radar T/R assembly at frequency i place.
(5) radar T/R assembly is at the attenuation accuracy ARMS at frequency i place i:
ARMS i = Σ j = 1 N ( A i j - A ij 0 ) 2 N
Wherein, A ij=S 21AAij(i=f l, l=1,2...M; J=1,2 ... N)
A i 1 0 = S 21 A A i 1 , A ij 0 = A i 1 0 - ( j - 1 ) / 2 , ( i = f l , l = 1 , 2 ... M ; j = 2 , 3 , ... N )
under representing attenuation state, when adjustable attenuation code is 0, radar T/R assembly is in the gain of frequency i place 1 state, and 0 state namely under attenuation state decays; S 21AAi1under representing attenuation state, when adjustable attenuation code is 0, the gain of radar T/R assembly at frequency i place; S 21AAijunder representing phase-shift states, the gain of radar T/R assembly under frequency i place j state; A ijrepresent the gain measurements in assigned frequency point i place j state; under representing attenuation state, with for decaying with reference to 0 state, T/R assembly is in the gain theory value of assigned frequency point i place j state; under representing attenuation state, when adjustable attenuation code is 0, radar T/R assembly is in the gain of frequency i place 1 state, and 0 state namely under attenuation state decays.
Step 6, writes autostore module and stores the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under phase-shift states respectively under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i.
Particularly, with reference to Fig. 7, it is the design flow diagram using the inventive method to carry out data storage;
Write data memory module:
In the present invention, first utilize " numerical value is to the conversion of decimal character string " control by above-mentioned ten arrays, i.e. the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under phase-shift states under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place ibe converted to the list data form required for excel storage;
Then the ExcelEasyTitle.vi in NI_ReportGenerationToolkit kit is utilized to add storage file heading character string, parameter name character string;
Finally utilize that SaveReporttoFile.vi instrument adds filename character string, file store path character string realizes test result autostore Excel and reports.
Effect of the present invention verifies explanation further by following test result.
(1) content is emulated
Emulation content one: vector network analyzer parameter flag position SF:S 21, clock status CS: run clock, phase shifter state TS: attenuation state, channel number SS=3, initial frequency f start=f 1, stop frequency f stop=f 5, number of scan points M=5, test mode sum N=64,
Simulation result: table 1 lists corresponding index test result under certain Active Phased Array Radar T/R assembly 3 channel attenuation state:
Corresponding index test result under table 1 radar T/R assembly 3 channel attenuation state
Emulation content two: vector network analyzer parameter flag position SF:S 21, clock status CS: run clock, phase shifter state TS: phase-shift states, channel number SS=3, initial frequency f start=f 1, stop frequency f stop=f 5, number of scan points M=5, test mode sum N=64,
Simulation result: table 2 lists corresponding index test result under certain Active Phased Array Radar T/R assembly 3 passage phase-shift states:
Corresponding index test result under table 2 radar T/R assembly 3 passage phase-shift states
(2) interpretation of result
Table 1 is corresponding index test result under radar T/R assembly 3 channel attenuation state, corresponding index test result under table 2 radar T/R assembly 3 passage phase-shift states.Adopt traditional manual method of testing, the passage testing above-mentioned radar T/R assembly needs 2 ~ 3 people's co-operatings to spend 2 hours just can complete.Adopt the radar T/R assembly Auto-Test System of the inventive method, a passage of test radar T/R assembly only needs a people to spend about 4 minutes, substantially increases the testing efficiency of radar T/R assembly.
In sum, Simulation experiments validate correctness of the present invention, validity and reliability.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention; Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (6)

1. a radar T/R assembly Auto-Test System, is characterized in that, comprising: power supply, radar T/R assembly, vector network analyzer, main control computer;
Main control computer, sent the calibration file be stored on main control computer disk to vector network analyzer by general purpose interface bus, make vector network analyzer complete calibration, then complete the vector network analyzer of calibration to radar T/R assembly launched microwave signal, while radar T/R assembly receives the voltage that provides of power supply or electric current by wire, also the control clock signal that main control computer is sended over by parallel port control clock line is received, then radar T/R assembly is to the phase place of the microwave signal received, amplitude carries out phase change respectively, amplitude fading process, obtain the microwave signal after processing, and the microwave signal after process is sent to vector network analyzer, vector network analyzer gathers the phase place between the microwave signal after microwave signal and process, changes in amplitude data, again by the phase place between the microwave signal after the microwave signal that collects and process, changes in amplitude data separate general purpose interface bus is sent to described main control computer and stores respectively.
2. a radar T/R assembly automatic test approach, based on radar T/R assembly Auto-Test System, described radar T/R assembly Auto-Test System comprises: power supply, radar T/R assembly, vector network analyzer, main control computer, it is characterized in that, described radar T/R assembly automatic test approach comprises the following steps:
Step 1, initialization vector network analyzer, and vector network analyzer address, parameter flag position SF, clock status CS, channel number SS, phase shifter state TS, initial frequency f are set start, stop frequency f stop, number of scan points M, test mode sum N, storage file heading character string, parameter name character string, filename character string and file store path character string;
Step 2, according to the parameter flag position SF of vector network analyzer arranged, vector network analyzer creates the reflection coefficient S of port one when port 2 connects matched load respectively 11, port 2 when connecing matched load port one to the transmission coefficient S of port 2 21, port one when connecing matched load port 2 to the transmission coefficient S of port one 12, port one port 2 when connecing matched load reflection coefficient S 22; And to obtain when described port 2 connects matched load port one respectively to the transmission coefficient S of port 2 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS;
Step 3, when connecing matched load according to described port 2, port one is to the transmission coefficient S of port 2 21parameter flag position SF, clock status CS, channel number SS and phase shifter state TS load the parallel port control clock of radar T/R assembly;
Step 4, after radar T/R assembly reads its parallel port control clock, gather respectively radar T/R assembly be in phase-shift states under phase data gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AS;
Step 5, is in the phase data under phase-shift states according to radar T/R assembly gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AS, the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under acquisition phase-shift states respectively under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i;
Wherein, i=f l, l=1,2...M; J=1,2 ... N, M represent the vector network analyzer number of scan points of setting, the vector network analyzer test mode sum that N is arranged, f lrepresent the Frequency point at l analyzing spot place;
Step 6, writes autostore module and stores the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under phase-shift states respectively under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i.
3. a kind of radar T/R assembly automatic test approach as claimed in claim 2, is characterized in that, in step 1, described clock status CS comprises standby clock, runs clock two states;
Described phase shifter state TS, comprises phase-shift states, attenuation state;
Described channel number SS, SS=1,2 ..., 16, represent the 1st, 2 of radar T/R assembly passage ..., 16 labels;
Described storage file heading character string, is converted to through " numerical value is changed to decimal character string " control by channel number SS;
Described parameter name character string, filename character string and file store path character string provide with the form of character string constant in radar T/R assembly Auto-Test System program; Test mode sum N provides with the form of numeric constant in radar T/R assembly Auto-Test System program.
4. a kind of radar T/R assembly automatic test approach as claimed in claim 2, is characterized in that, in step 2, and the reflection coefficient S of port one when described port 2 connects matched load 11, port 2 when connecing matched load port one to the transmission coefficient S of port 2 21, port one when connecing matched load port 2 to the transmission coefficient S of port one 12, port one port 2 when connecing matched load reflection coefficient S 22, its expression formula is respectively:
Wherein, a 1represent vector network analyzer port one incoming signal; a 2vector network analyzer port 2 incoming signal; b 1represent vector network analyzer port one reflected signal; b 2represent vector network analyzer port 2 incoming signal.
5. a kind of radar T/R assembly automatic test approach as claimed in claim 2, is characterized in that, in step 4, described radar T/R assembly is in the phase data under phase-shift states gain data with standing-wave ratio (SWR) data and radar T/R assembly is in the phase data under attenuation state gain data S 21AAwith standing-wave ratio (SWR) data S 21AS, its expression formula is respectively:
Under radar T/R assembly is in phase-shift states:
Phase data:
Gain data:
Standing-wave ratio (SWR) data:
Under radar T/R assembly is in attenuation state:
Phase data:
Gain data: S 21AA=A aAij(i=f l, l=1,2...M; J=1,2 ... N)
Standing-wave ratio (SWR) data:
Wherein, under representing phase-shift states, the phase measurement of radar T/R assembly under frequency i place j state; under representing phase-shift states, the gain measurements of radar T/R assembly under frequency i place j state; under representing phase-shift states, the SWR measurement value of radar T/R assembly under frequency i place j state; under representing attenuation state, the phase measurement of radar T/R assembly under frequency i place j state; A aAijunder representing attenuation state, the gain measurements of radar T/R assembly under frequency i place j state; under representing attenuation state, the SWR measurement value of radar T/R assembly under frequency i place j state; M represents the vector network analyzer number of scan points of setting, N test mode sum, f lrepresent the frequency at l analyzing spot place.
6. a kind of radar T/R assembly automatic test approach as claimed in claim 2, is characterized in that, in step 5 or step 6, and the standing-wave ratio (SWR) of radar T/R assembly at frequency i place under described phase-shift states under phase-shift states, radar T/R assembly is at 0 state phase at frequency i place under phase-shift states, radar T/R assembly is in the 0 state decay of frequency i receiving cable is in the 0 state consistency phase delta phi at Frequency point i place i, the phase shifting accuracy RMS of receiving cable at Frequency point i place i, the standing-wave ratio (SWR) S of radar T/R assembly at frequency i place under attenuation state ai, 0 state phase of radar T/R assembly at frequency i place under attenuation state under attenuation state, radar T/R assembly is in the 0 state decay at frequency i place receiving cable is at the 0 state consistency gain delta G at Frequency point i place iwith the attenuation accuracy ARMS of receiving cable at Frequency point i place i, its expression formula is respectively:
Under radar T/R assembly is in phase-shift states:
(1) radar T/R assembly is in the standing-wave ratio (SWR) at frequency i place
(2) radar T/R assembly is in the phase place of frequency i place 0 state
(3) radar T/R assembly is in the decay of frequency i place 0 state
(4) radar T/R assembly receiving cable is in the consistance phase delta phi of Frequency point i place 0 state i:
Δφ i＝±(φ imax-φ imin)/2,(i＝f l,l＝1,2...M)
Wherein, under representing attenuation state, the phase place of radar T/R assembly under frequency i place j state; under representing phase-shift states, the gain of radar T/R assembly under frequency i place j state; under representing phase-shift states, the standing-wave ratio (SWR) of radar T/R assembly under frequency i place j state; under representing phase-shift states, when phase shifting control code is 0, the phase place of radar T/R assembly at frequency i place; φ imaxrepresent the phase place maximal value of frequency i receiving cable 0 state, φ iminrepresent the minimum value of frequency i receiving cable 0 state, Δ φ irepresent the degree of fluctuation of radar T/R assembly in Frequency point i place phase place; f lrepresent the Frequency point at l analyzing spot place, and can by initial frequency f start, stop frequency f stop, number of scan points M tries to achieve by following formulae discovery: f l = f s t a r t + ( l - 1 ) · ( f s t o p - f s t a r t ) M - 1 , ( l = 1 , 2 ... M ) ; M represents the vector network analyzer number of scan points of setting, the vector network analyzer test mode sum that N is arranged.
(5) radar T/R assembly is at the phase shifting accuracy RMS at frequency i place i:
RMS i = Σ j = 1 N ( φ i j - φ ij 0 ) 2 N ( i = f l , l = 1 , 2 ... M ; j = 1 , 2 ... N )
Wherein,
Wherein, under representing phase-shift states, when phase shifting control code is 0, the phase place of radar T/R assembly at frequency i place; under representing phase-shift states, the phase place of radar T/R assembly under frequency i place j state; φ ijrepresent the phase measurement in assigned frequency point i place j state, under representing phase-shift states, with for reference 0 state phase, radar T/R assembly is in the phase place theoretical value of assigned frequency point i place j state; represent under phase-shift states, when phase shifting control code is 0, radar T/R assembly in the phase place of frequency i place 1 state, 0 state phase namely under phase-shift states;
Under radar T/R assembly is in attenuation state:
(1) radar T/R assembly is at the standing-wave ratio (SWR) S at frequency i place ai:
(2) radar T/R assembly is in the phase place of frequency i place 0 state
(3) radar T/R assembly is in the decay of frequency i place 0 state
(4) receiving cable is at the consistance gain △ G of Frequency point i place 0 state i:
ΔG i＝±(G imax-G imin)/2,(i＝f l,l＝1,2...M)
Wherein, S 21ASijunder representing attenuation state, the standing-wave ratio (SWR) of radar T/R assembly under frequency i place j state; under representing attenuation state, the phase place of radar T/R assembly under frequency i place j state; under representing phase-shift states, the gain of radar T/R assembly under frequency i place j state; S 21AAi1under representing attenuation state, when adjustable attenuation code is 0, the gain of radar T/R assembly at frequency i place; G imaxrepresent the gain maximum of frequency i place receiving cable 0 state, G iminrepresent the gain minimum value of frequency i place receiving cable 0, Δ G irepresent the gain fluctuation degree of radar T/R assembly at frequency i place.
(5) radar T/R assembly is at the attenuation accuracy ARMS at frequency i place i:
ARMS i = Σ j = 1 N ( A i j - A ij 0 ) 2 N
Wherein, A ij=S 21AAij(i=f l, l=1,2...M; J=1,2 ... N)
A i 1 0 = S 21 A A i 1 , A ij 0 = A i 1 0 - ( j - 1 ) / 2 , ( i = f l , l = 1 , 2 ... M ; j = 2 , 3 , ... N )
under representing attenuation state, when adjustable attenuation code is 0, radar T/R assembly is in the gain of frequency i place 1 state, and 0 state namely under attenuation state decays; S 21AAi1under representing attenuation state, when adjustable attenuation code is 0, the gain of radar T/R assembly at frequency i place; S 21AAijunder representing phase-shift states, the phase place of radar T/R assembly under frequency i place j state; A ijrepresent the gain measurements in assigned frequency point i place j state; under representing attenuation state, with for decaying with reference to 0 state, T/R assembly is in the gain theory value of assigned frequency point i place j state; under representing attenuation state, when adjustable attenuation code is 0, radar T/R assembly is in the gain of frequency i place 1 state, and 0 state namely under attenuation state decays.
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CN109030986B (en) * 2018-06-14 2020-12-01 中国电子科技集团公司第四十一研究所 T/R assembly phase-shifting precision testing method and system based on triggering function
CN109030986A (en) * 2018-06-14 2018-12-18 中国电子科技集团公司第四十研究所 T/R component phase shifting accuracy test method and system based on Trigger Function
CN108919214A (en) * 2018-08-08 2018-11-30 航天南湖电子信息技术股份有限公司 A kind of phased-array radar number T/R component amplitude and phase correction device and its bearing calibration
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CN111060214A (en) * 2019-12-24 2020-04-24 上海传输线研究所（中国电子科技集团公司第二十三研究所） Fiber grating temperature measurement sensor and temperature measurement method of inner conductor of radio frequency cable
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CN113447898A (en) * 2021-06-28 2021-09-28 四创电子股份有限公司 T/R assembly multi-state S parameter measuring system based on vector network
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