CN103929258A - Test method based on radar dynamic frequency selection test system - Google Patents
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Abstract
The invention discloses a test method based on a radar dynamic frequency selection test system. The radar dynamic frequency selection test system comprises a single-channel function/ random waveform generator, a double-channel function/ random waveform generator, a radio-frequency signal generator, a radio-frequency spectrum analyzer, a control computer with a GPIS controller and corresponding radar dynamic frequency selection test software, a plurality of radio-frequency attenuators, power dividers and auxiliary computers. Therefore, the radar dynamic frequency selection test system overcomes the shortcomings that existing test system cannot meet global standard test requirements, instruments for transmitting or analyzing radar signals are expensive, and test efficiency is low due to the fact that the instruments do not have test software and operation is performed through operation interfaces of the instruments.
Description
Technical field
The present invention relates to testing apparatus technical field, particularly a kind of method of testing based on radar dynamic frequency selection test macro.
Background technology
The test of radar dynamic frequency selection refers to the wireless device being operated in 5GHz frequency range, when the radar with same frequency range work meets, should be able to dynamically select or change the operating frequency of self, thus the radar signal of avoiding interference.Because 5.25～5.35 GHz and 5.47～5.725 GHz are working frequency range of global radar system, so the equipment in these frequency ranges all should be able to meet the requirement of radar dynamic frequency selection actively or passively.
Flourish along with wireless communication technology especially Wi-Fi technology, various wireless device is as emerged rapidly in large numbersBamboo shoots after a spring rain, pour into consumer market, because technology innovation is regenerated very quick, so the wireless device of market sale is countless, originally 2.4 main GHz ISM band become day by day crowded, equipment room disturbs also serious all the more, therefore, more the radio communication of high band becomes focus, various countries have also all opened the licensed band of exempting from of 5GHz successively simultaneously, but consider that wireless device is as noted earlier to the issuable interference of radar, each state has all formulated corresponding standard, the wireless device that mandatory requirement is operated in radar frequency band must have the function of radar dynamic frequency selection.These countries and regions include but not limited to North America, Europe, Canada, Australia, Japan, Korea S and China etc.In China, be wherein in the < < the Ministry of Industry and Information Technology promulgating for the end of the year 2012, about issue 5150-5350 megahertz frequency range wireless access system frequency, to use the notice > > of relevant matters according to the Ministry of Industry and Information Technology, Ministry of Industry and Information is without No. [2012] 620, letter, proposed the requirement that 5GHz radar frequency band needs DFS to test, formally implemented now.If 5GHz equipment can not be tested by radar dynamic frequency selection, can not sell on the market.
The Wireless Telecom Equipment that is operated in 5 ghz bands is mainly the Wi-Fi equipment such as 802.11a, 802.11n, 802.11ac.FCC has also issued memorandum FCC 06-96 specially, and the test of DFS has been carried out to closed specification, and Er European Union have been described in detail the test of DFS in ETSI EN 301 893 standards.Other national test request is all mainly followed the method for testing of these two countries and regions, but may in radar signal type, can define different parameters according to oneself requirement.DFS test event in FCC and etsi standard mainly contains:
(1) being uniformly distributed of working channel: require equipment under test to select equiprobably working channel at 5.25～2.35 GHz and 5.47～5.725 ghz bands.
(2) Radar Signal Detection bandwidth: from the centre frequency of equipment under test working channel, with 1 MHz step-length, increase (or minimizing) radar signal frequency, observe the reaction of equipment under test, until equipment under test cannot detect radar signal, to obtain the frequency range of the radar signal that UUT can detect.
(3) initial channel availability detection time: equipment under test is after completing start operation, should carry out detecting for 1 minute to work at present channel, observe the Channel Detection mechanism of equipment under test, equipment under test should just start to send radiofrequency signal after completing the Channel Detection of 1 minute.
(4) channel availability detects: equipment under test is after completing start operation, to carry out detecting for 1 minute to work at present channel, this test item requires at equipment under test working channel, to send radar signal in the initial and last moment of 1 minute Channel Detection time, appearance due to radar signal, equipment under test, after completing detection in 1 minute, should not send radiofrequency signal at this channel.
(5) the channel migration time: when equipment under test equipment associated with it carries out business transmission, at equipment under test working channel, send radar signal, from radar signal, stop sending beginning timing, equipment under test (if equipment under test is main equipment, comprising associated all from equipment) should stop at this channel and carry out business transmission in limiting time.
(6) channel stops the delivery time: when equipment under test equipment associated with it carries out business transmission, at equipment under test working channel, send radar signal, from radar signal stops sending, the transmission time summation on this channel can not surpass limit value.
(7) channel can not take the cycle: equipment under test after radar signal, can not carry out at this channel the time limit value of business transmission in a certain Channel Detection.
(8) detection threshold statistic property test: send the radar signal of appointment with the level value of regulation at equipment under test working channel, this test need to repeat repeatedly under identical condition, to add up the probability of the radar signal that equipment under test can detect.
Further popularizing of further opening based on 5GHz frequency and associated wireless devices, radar dynamic frequency selection (DFS-Dynamic Frequency Selection) test will become a link very important in global product type is checked and approved test process, and that the frequency of utilization of relevant test macro also can become is very frequent.At present because domestic dependence test requires just ground zero, also do not have at home the method for testing based on radar dynamic frequency selection test macro of independent intellectual property right, go to meet growing product test demand, and test request will slowly refinement in following implementation process, augment; Wireless product due to many 5GHz normally carries out domestic and export trade simultaneously in addition, so conventionally all can carry out according to global standard-required the test of radar dynamic frequency selection, so it is flat to be starved of a set of low one-tenth, efficiently, flexibly, and can meet the test macro of global radar dynamic frequency selection standard-required.Current radar dynamic frequency selection testing equipment on the market, it is simple signal generator, be responsible for transmitting radar signal, it is the simple signal analysis on spectrum analyzer, or both are combined, but be only the standard-required for particular country, can not meet global standards test request.And the common price of instrument that can carry out radar signal or analysis is all very expensive, to add them and can not carry testing software, and be only that operation interface by instrument itself operates, this makes to test very poor efficiency.
Summary of the invention
Goal of the invention: the object of the invention is provides a kind of method of testing based on radar dynamic frequency selection test macro for the deficiencies in the prior art, by single channel function/arbitrary waveform generator, binary channels function/arbitrary waveform generator, radio-frequency signal generator, Spectrum Analyzer and GPIB controller is installed and the control computer of corresponding radar dynamic frequency selection testing software, additional some radio frequency attenuators, power splitter and auxiliary computer form, just can make up thus existing test macro and can not meet global standards test request, and such the common price of instrument that can carry out radar signal or analysis is all too expensive, adding them can not carry testing software and be only that operation interface by instrument itself operates and finally causes testing the very defect of poor efficiency.
Technical scheme: in order to realize goal of the invention, the invention discloses a kind of method of testing based on radar dynamic frequency selection test macro, step is as follows:
Step 1: first radar dynamic frequency selection test macro is set, described radar dynamic frequency selection test macro comprises controls computer 1, control computer 1 inside with the test module based on Labview, the described test module based on Labview can carry out radar dynamic frequency selection, described control computer 1 inside is provided with GPIB controller 2, described GPIB controller 2 passes through GPIB line 3 respectively with single channel function/arbitrary waveform generator 4, binary channels function/arbitrary waveform generator 5, radio-frequency signal generator 6 and Spectrum Analyzer 8 are connected, described passage function/arbitrary waveform generator 4 is all connected with radio-frequency signal generator 6 with binary channels function/arbitrary waveform generator 5, described radio-frequency signal generator 6 is connected with the first radio frequency attenuator 9, the first radio frequency attenuator 9 is connected with the first power splitter 10, the first power splitter 10 is also connected with the second radio frequency attenuator 11 with Spectrum Analyzer 8, the second described radio frequency attenuator 11 is connected with the second power splitter 12, the second power splitter 12 is also connected with the 4th radio frequency attenuator 14 with the 3rd radio frequency attenuator 13, the 3rd radio frequency attenuator 13 is connected with the equipment being associated 15 that is operated in 5GHz frequency range, the 4th radio frequency attenuator 14 is connected with the equipment under test 16 that is operated in 5GHz frequency range, the equipment under test 16 that is operated in 5GHz frequency range is connected with auxiliary computer 17, the described test module based on Labview comprises and can carry out equipment under test carry out the intercepting of diagram curve, full automatic radar dynamic frequency selection on-line monitoring test and be operated in the response analysis of the equipment under test of 5GHz frequency range to radar, can also carry out forbidding for 30 minutes measurement, the inspection of 60 second time, channel transfer time and the cumulative time measurement of the phase that takies, the function also in addition with control waveform generator able to programme and radio-frequency signal generator is supported the standard of global radar dynamic frequency selection test, described single channel function/arbitrary waveform generator 4, binary channels function/arbitrary waveform generator 5, radio-frequency signal generator 6 and Spectrum Analyzer 8 have respectively corresponding GPIB address separately, can be controlled computer 1 and identify and control, described single channel function/arbitrary waveform generator 4 and the output of binary channels function/arbitrary waveform generator 5 are connected to pulse or the FM modulation input port of radio-frequency signal generator 6 by the radio frequency line of BNC interface, the output of described radio-frequency signal generator 6 and the input of Spectrum Analyzer 8 are connected to the first radio frequency attenuator 9 and the first power splitter 10 by radio frequency line respectively, in described control computer 1, also store radar test type in addition, the waveform that comprises radar in described radar test type, the waveform of each radar includes each self-corresponding pulse duration, pulse amplitude, pulse recurrence interval and the such parameter of umber of pulse, and in described control computer 1, has also stored various surveys lower each self-corresponding frequency spectrograph parameters of examination project,
Step 2: start radar dynamic frequency selection test macro and carry out initialization, wherein single channel function/arbitrary waveform generator 4 and binary channels function/arbitrary waveform generator 5 reset, and comprise single channel function/arbitrary waveform generator 4 and binary channels function/arbitrary waveform generator 5 are carried out to the initialization of waveform frequency, amplitude and input channel; Described radio-frequency signal generator 6 also resets, and comprises and radio-frequency signal generator 6 is carried out to modulation type, modulation port, the initialization of rf frequency and output amplitude; Described Spectrum Analyzer 8 also resets, and comprises the initialization that Spectrum Analyzer 8 is triggered to type, triggering level, sweep time, centre frequency, sweep bandwidth, video bandwidth, rf attenuation and reference level value;
Step 3: when needs are measured radar signal setting and transmitting, survey crew is selected the type of waveform of radar test by the test module of Labview, when having selected the type of waveform of radar test, and the test module by Labview is while carrying out the operation of typing radar signal, the type of waveform that the test module of Labview just takes out radar test from control computer 1 includes each self-corresponding pulse duration, pulse amplitude, the parameter that pulse recurrence interval and umber of pulse are such, by this pulse duration, pulse amplitude, the such parameter of pulse recurrence interval and umber of pulse is written to single channel function/arbitrary waveform generator 4 and binary channels function/arbitrary waveform generator 5 by GPIB controller 2 via GPIB line 3, modulation system corresponding to being modulated to of radio-frequency signal generator 6 is set, then close radio frequency input, wait for next step instruction, now can export by the test module execution triggering of Labview and the waveform of activation waveform generator, at this moment radar waveform will send to radio-frequency signal generator 6 and modulates, and be output as the radar signal of simulation, and trigger Spectrum Analyzer 8 and carry out spectrum monitoring, and can demonstrate by list the parameter of current selected radar waveform, if at this moment equipment under test has been to connect in radar dynamic frequency selection test macro, that equipment under test will monitor radar signal, and should react action, and on Spectrum Analyzer 8, demonstrate corresponding spectrum curve and change,
Step 4: when domain measurement is analyzed when needed, that Spectrum Analyzer 8 is carried out to parameter setting, screen printing curve chart is also analyzed and is preserved curve, that Spectrum Analyzer 8 has been triggered and the spectrum curve of having measured is kept to viewing area in step 3 specifically, this spectrum curve demonstrates the spectral change of equipment under test after monitoring radar signal, can indicate the Dynamic Selection ability of equipment under test to frequency, by the test module of Labview, carry out numerical value input and push button function, can directly to the parameter of spectrum analyzer, carry out long-range setting, simultaneously, survey crew selects to survey corresponding frequency spectrograph parameters under an examination project by the test module of Labview from control computer 1, then survey crew has been determined after corresponding frequency spectrograph parameters, the test module of Labview will be arranged to desired parameters by Spectrum Analyzer 8 automatically, the test module of this Labview provides the intercepting of screen curve and the analytic function of Spectrum Analyzer 8 simultaneously, survey crew reads the curve values of current demonstration by the test module transmission reading order of Labview to Spectrum Analyzer 8, and under Labview instrument, regenerate corresponding spectrum curve and by its demonstration, and the spectrum curve showing is changed and analyzed, derivation comprises the channel off time of equipment under test, channel transfer time and channel can not the such data of holding time, finally curve is kept at and controls in computer 1,
Step 5: when needs carry out the automatic test of radar dynamic frequency selection and monitoring, namely for the everything of Connection Step 3 and step 4, automatically complete test, a viewing area is specifically set on this control computer 1, described viewing area is listed the radar signal frequency of required test in advance in order, radar type and type of waveform, the radar signal frequency of the required test that then test module of Labview can be listed according to this automatically, radar type and type of waveform, control in order one by one single channel function/arbitrary waveform generator 4, binary channels function/arbitrary waveform generator 5 and radio-frequency signal generator 6 send radar signal, and move by the reaction that Spectrum Analyzer 8 or the such mode of serial communication are monitored equipment under test, until complete the test of all radar types, then generate outcome record.
Beneficial effect: the present invention compared with prior art, testing hardware and software are become one, support multi-signal generator and frequency spectrograph, can carry out very neatly system configuration, support full-automatic test, compare other system and have very high flexibility and controllable cost performance, and the testing standard requirement in the test method conforms whole world of this cover based on radar dynamic frequency selection test macro, thereby diversified testing requirement amount is provided and has improved product test efficiency and shortened the time that apply in the product introduction whole world.
Accompanying drawing explanation
Fig. 1 is operation principle structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of method of testing based on radar dynamic frequency selection test macro, step is as follows:
Step 1: first radar dynamic frequency selection test macro is set, described radar dynamic frequency selection test macro comprises controls computer 1, control computer 1 inside with the test module based on Labview, the described test module based on Labview can carry out radar dynamic frequency selection, described control computer 1 inside is provided with GPIB controller 2, described GPIB controller 2 passes through GPIB line 3 respectively with single channel function/arbitrary waveform generator 4, binary channels function/arbitrary waveform generator 5, radio-frequency signal generator 6 and Spectrum Analyzer 8 are connected, described passage function/arbitrary waveform generator 4 is all connected with radio-frequency signal generator 6 with binary channels function/arbitrary waveform generator 5, described radio-frequency signal generator 6 is connected with the first radio frequency attenuator 9, the first radio frequency attenuator 9 is connected with the first power splitter 10, the first power splitter 10 is also connected with the second radio frequency attenuator 11 with Spectrum Analyzer 8, the second described radio frequency attenuator 11 is connected with the second power splitter 12, the second power splitter 12 is also connected with the 4th radio frequency attenuator 14 with the 3rd radio frequency attenuator 13, the 3rd radio frequency attenuator 13 is connected with the equipment being associated 15 that is operated in 5GHz frequency range, the 4th radio frequency attenuator 14 is connected with the equipment under test 16 that is operated in 5GHz frequency range, the equipment under test 16 that is operated in 5GHz frequency range is connected with auxiliary computer 17, the described test module based on Labview comprises and can carry out equipment under test carry out the intercepting of diagram curve, full automatic radar dynamic frequency selection on-line monitoring test and be operated in the response analysis of the equipment under test of 5GHz frequency range to radar, can also carry out forbidding for 30 minutes measurement, the inspection of 60 second time, channel transfer time and the cumulative time measurement of the phase that takies, the function also in addition with control waveform generator able to programme and radio-frequency signal generator is supported the standard of global radar dynamic frequency selection test, described single channel function/arbitrary waveform generator 4, binary channels function/arbitrary waveform generator 5, radio-frequency signal generator 6 and Spectrum Analyzer 8 have respectively corresponding GPIB address separately, can be controlled computer 1 and identify and control, described single channel function/arbitrary waveform generator 4 and the output of binary channels function/arbitrary waveform generator 5 are connected to pulse or the FM modulation input port of radio-frequency signal generator 6 by the radio frequency line of BNC interface, the output of described radio-frequency signal generator 6 and the input of Spectrum Analyzer 8 are connected to the first radio frequency attenuator 9 and the first power splitter 10 by radio frequency line respectively, in described control computer 1, also store radar test type in addition, the waveform that comprises radar in described radar test type, the waveform of each radar includes each self-corresponding pulse duration, pulse amplitude, pulse recurrence interval and the such parameter of umber of pulse, and in described control computer 1, has also stored various surveys lower each self-corresponding frequency spectrograph parameters of examination project,
Step 2: start radar dynamic frequency selection test macro and carry out initialization, wherein single channel function/arbitrary waveform generator 4 and binary channels function/arbitrary waveform generator 5 reset, and comprise single channel function/arbitrary waveform generator 4 and binary channels function/arbitrary waveform generator 5 are carried out to the initialization of waveform frequency, amplitude and input channel; Described radio-frequency signal generator 6 also resets, and comprises and radio-frequency signal generator 6 is carried out to modulation type, modulation port, the initialization of rf frequency and output amplitude; Described Spectrum Analyzer 8 also resets, and comprises the initialization that Spectrum Analyzer 8 is triggered to type, triggering level, sweep time, centre frequency, sweep bandwidth, video bandwidth, rf attenuation and reference level value;
Step 3: when needs are measured radar signal setting and transmitting, survey crew is selected the type of waveform of radar test by the test module of Labview, major function is to carry out radar waveform type, the setting of parameter and calibration, and the frequency of radio-frequency signal generator, the arranging etc. of amplitude.Each radar type has each self-corresponding waveform, in each waveform, include each self-corresponding pulse duration, pulse amplitude, the parameter that pulse recurrence interval and umber of pulse are such, when having selected the type of waveform of radar test, and the test module by Labview is while carrying out the operation of typing radar signal, the type of waveform that the test module of Labview just takes out radar test from control computer 1 includes each self-corresponding pulse duration, pulse amplitude, the parameter that pulse recurrence interval and umber of pulse are such, by this pulse duration, pulse amplitude, the such parameter of pulse recurrence interval and umber of pulse is written to single channel function/arbitrary waveform generator 4 and binary channels function/arbitrary waveform generator 5 by GPIB controller 2 via GPIB line 3, modulation system corresponding to being modulated to of radio-frequency signal generator 6 is set, then close radio frequency input, wait for next step instruction, now can export by the test module execution triggering of Labview and the waveform of activation waveform generator, at this moment radar waveform will send to radio-frequency signal generator 6 and modulates, and be output as the radar signal of simulation, and trigger Spectrum Analyzer 8 and carry out spectrum monitoring, and can demonstrate by list the parameter of current selected radar waveform, for reference.If at this moment equipment under test has been to connect in radar dynamic frequency selection test macro, that equipment under test will monitor radar signal, and should react action, and on Spectrum Analyzer 8, demonstrates corresponding spectrum curve variation;
Step 4: when domain measurement is analyzed when needed, that Spectrum Analyzer 8 is carried out to parameter setting, screen printing curve chart is also analyzed and is preserved curve, be used for measurement result and judge, that Spectrum Analyzer 8 has been triggered and the spectrum curve of having measured is kept to viewing area in step 3 specifically, this spectrum curve demonstrates the spectral change of equipment under test after monitoring radar signal, can indicate the Dynamic Selection ability of equipment under test to frequency, by the test module of Labview, carry out numerical value input and push button function, can directly to the parameter of spectrum analyzer, carry out long-range setting, simultaneously, survey crew selects to survey corresponding frequency spectrograph parameters under an examination project by the test module of Labview from control computer 1, then survey crew has been determined after corresponding frequency spectrograph parameters, the test module of Labview will be arranged to desired parameters by Spectrum Analyzer 8 automatically, save the testing time.The test module of this Labview provides the intercepting of screen curve and the analytic function of Spectrum Analyzer 8 simultaneously, survey crew reads the curve values of current demonstration by the test module transmission reading order of Labview to Spectrum Analyzer 8, and under Labview instrument, regenerate corresponding spectrum curve and by its demonstration, and the spectrum curve showing is changed and analyzed, derivation comprises that channel off time, channel transfer time and the channel of equipment under test can not the such data of holding time, finally curve is kept at and controls in computer 1;
Step 5: when needs carry out the automatic test of radar dynamic frequency selection and monitoring, namely for the everything of Connection Step 3 and step 4, automatically complete test, a viewing area is specifically set on this control computer 1, described viewing area is listed the radar signal frequency of required test in advance in order, radar type and type of waveform, the radar signal frequency of the required test that then test module of Labview can be listed according to this automatically, radar type and type of waveform, control in order one by one single channel function/arbitrary waveform generator 4, binary channels function/arbitrary waveform generator 5 and radio-frequency signal generator 6 send radar signal, and move by the reaction that Spectrum Analyzer 8 or the such mode of serial communication are monitored equipment under test, until complete the test of all radar types, then generate outcome record.
Explanation to disclosed above-described embodiment, make those skilled in the art can realize or use the present invention, the those skilled in the art of modification team to above-described embodiment are apparent, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not restricted to embodiment illustrated herein, but will meet the wide region consistent with principle disclosed herein and features of novelty.
Claims (1)
1. the method for testing based on radar dynamic frequency selection test macro, is characterized in that, step is as follows:
Step 1: first radar dynamic frequency selection test macro is set, described radar dynamic frequency selection test macro comprises controls computer (1), control computer (1) inner with the test module based on Labview, the described test module based on Labview can carry out radar dynamic frequency selection, described control computer (1) inside is provided with GPIB controller (2), described GPIB controller (2) passes through GPIB line (3) respectively with single channel function/arbitrary waveform generator (4), binary channels function/arbitrary waveform generator (5), radio-frequency signal generator (6) and Spectrum Analyzer (8) are connected, described passage function/arbitrary waveform generator (4) and binary channels function/arbitrary waveform generator (5) all same radio-frequency signal generator (6) are connected, described radio-frequency signal generator (6) is connected with the first radio frequency attenuator (9), the first radio frequency attenuator (9) is connected with the first power splitter (10), the first power splitter (10) also same Spectrum Analyzer (8) is connected with the second radio frequency attenuator (11), described the second radio frequency attenuator (11) is connected with the second power splitter (12), the second power splitter (12) is also connected with the 4th radio frequency attenuator (14) with the 3rd radio frequency attenuator (13), the 3rd radio frequency attenuator (13) is connected with the equipment being associated (15) that is operated in 5GHz frequency range, the 4th radio frequency attenuator (14) is connected with the equipment under test (16) that is operated in 5GHz frequency range, the same auxiliary computer of equipment under test (16) (17) that is operated in 5GHz frequency range is connected, the described test module based on Labview comprises and can carry out equipment under test carry out the intercepting of diagram curve, full automatic radar dynamic frequency selection on-line monitoring test and be operated in the response analysis of the equipment under test of 5GHz frequency range to radar, can also carry out forbidding for 30 minutes measurement, the inspection of 60 second time, channel transfer time and the cumulative time measurement of the phase that takies, the function also in addition with control waveform generator able to programme and radio-frequency signal generator is supported the standard of global radar dynamic frequency selection test, described single channel function/arbitrary waveform generator (4), binary channels function/arbitrary waveform generator (5), radio-frequency signal generator (6) and Spectrum Analyzer (8) have respectively corresponding GPIB address separately, can be controlled computer (1) and identify and control, described single channel function/arbitrary waveform generator (4) and the output of binary channels function/arbitrary waveform generator (5) are connected to pulse or the FM modulation input port of radio-frequency signal generator (6) by the radio frequency line of BNC interface, the input of the output of described radio-frequency signal generator (6) and Spectrum Analyzer (8) is connected to the first radio frequency attenuator (9) and the first power splitter (10) by radio frequency line respectively, in described control computer (1), also store radar test type in addition, the waveform that comprises radar in described radar test type, the waveform of each radar includes each self-corresponding pulse duration, pulse amplitude, the parameter that pulse recurrence interval and umber of pulse are such, and in described control computer (1), also stored various surveys lower each self-corresponding frequency spectrograph parameters of examination project,
Step 2: start radar dynamic frequency selection test macro and carry out initialization, wherein single channel function/arbitrary waveform generator (4) and binary channels function/arbitrary waveform generator (5) reset, and comprise single channel function/arbitrary waveform generator (4) and binary channels function/arbitrary waveform generator (5) are carried out to the initialization of waveform frequency, amplitude and input channel; Described radio-frequency signal generator (6) also resets, and comprises and radio-frequency signal generator (6) is carried out to modulation type, modulation port, the initialization of rf frequency and output amplitude; Described Spectrum Analyzer (8) also resets, and comprises the initialization that Spectrum Analyzer (8) is triggered to type, triggering level, sweep time, centre frequency, sweep bandwidth, video bandwidth, rf attenuation and reference level value;
Step 3: when needs are measured radar signal setting and transmitting, survey crew is selected the type of waveform of radar test by the test module of Labview, when having selected the type of waveform of radar test, and the test module by Labview is while carrying out the operation of typing radar signal, the type of waveform that the test module of Labview just takes out radar test from control computer (1) includes each self-corresponding pulse duration, pulse amplitude, the parameter that pulse recurrence interval and umber of pulse are such, by this pulse duration, pulse amplitude, the such parameter of pulse recurrence interval and umber of pulse is written to single channel function/arbitrary waveform generator (4) and binary channels function/arbitrary waveform generator (5) by GPIB controller (2) via GPIB line (3), the corresponding modulation system that is modulated to of radio-frequency signal generator (6) is set, then close radio frequency input, wait for next step instruction, now can export by the test module execution triggering of Labview and the waveform of activation waveform generator, at this moment radar waveform will send to radio-frequency signal generator (6) and modulates, and be output as the radar signal of simulation, and trigger Spectrum Analyzer (8) and carry out spectrum monitoring, and can demonstrate by list the parameter of current selected radar waveform, if at this moment equipment under test has been to connect in radar dynamic frequency selection test macro, that equipment under test will monitor radar signal, and should react action, and on Spectrum Analyzer (8), demonstrate corresponding spectrum curve and change,
Step 4: when domain measurement is analyzed when needed, that Spectrum Analyzer (8) is carried out to parameter setting, screen printing curve chart is also analyzed and is preserved curve, that Spectrum Analyzer in step 3 (8) has been triggered and the spectrum curve of having measured is kept to viewing area specifically, this spectrum curve demonstrates the spectral change of equipment under test after monitoring radar signal, can indicate the Dynamic Selection ability of equipment under test to frequency, by the test module of Labview, carry out numerical value input and push button function, can directly to the parameter of spectrum analyzer, carry out long-range setting, simultaneously, survey crew selects to survey corresponding frequency spectrograph parameters under an examination project by the test module of Labview from control computer (1), then survey crew has been determined after corresponding frequency spectrograph parameters, the test module of Labview will be arranged to desired parameters by Spectrum Analyzer (8) automatically, the test module of this Labview provides the intercepting of screen curve and the analytic function of Spectrum Analyzer (8) simultaneously, survey crew reads the curve values of current demonstration by the test module transmission reading order of Labview to Spectrum Analyzer (8), and under Labview instrument, regenerate corresponding spectrum curve and by its demonstration, and the spectrum curve showing is changed and analyzed, derivation comprises the channel off time of equipment under test, channel transfer time and channel can not the such data of holding time, finally curve is kept at and controls in computer (1),
Step 5: when needs carry out the automatic test of radar dynamic frequency selection and monitoring, namely for the everything of Connection Step 3 and step 4, automatically complete test, specifically on this control computer (1), a viewing area is set, described viewing area is listed the radar signal frequency of required test in advance in order, radar type and type of waveform, the radar signal frequency of the required test that then test module of Labview can be listed according to this automatically, radar type and type of waveform, control in order one by one single channel function/arbitrary waveform generator (4), binary channels function/arbitrary waveform generator (5) and radio-frequency signal generator (6) send radar signal, and by Spectrum Analyzer (8) or the such mode of serial communication, monitor the reaction action of equipment under test, until complete the test of all radar types, then generate outcome record.
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| CN109581321A (en) * | 2019-01-25 | 2019-04-05 | 南京大学 | A kind of more waveform signals of radar that can flexibly load parameter generate and apparatus for demonstrating |
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| CN109521407A (en) * | 2018-12-20 | 2019-03-26 | 陕西黄河集团有限公司 | Radar emission subsystem bandwidth of operation test method and system |
| CN109581321A (en) * | 2019-01-25 | 2019-04-05 | 南京大学 | A kind of more waveform signals of radar that can flexibly load parameter generate and apparatus for demonstrating |
| US11108472B1 (en) | 2019-10-08 | 2021-08-31 | Steven P. Leytus | Radar waveform generator configured for use in Wi-Fi systems testing |
| CN111723005A (en) * | 2020-05-25 | 2020-09-29 | 四川九洲电器集团有限责任公司 | Configuration method of automatic test software of test system |
| CN111723005B (en) * | 2020-05-25 | 2022-08-23 | 四川九洲电器集团有限责任公司 | Configuration method of automatic test software of test system |
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| CN114003549A (en) * | 2021-10-29 | 2022-02-01 | 四川恒湾科技有限公司 | 5G radio frequency unit testing method and device based on heterogeneous SOC |
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