CN102540155A - Radar integrated radiation power detection method - Google Patents
Radar integrated radiation power detection method Download PDFInfo
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- CN102540155A CN102540155A CN2012100127747A CN201210012774A CN102540155A CN 102540155 A CN102540155 A CN 102540155A CN 2012100127747 A CN2012100127747 A CN 2012100127747A CN 201210012774 A CN201210012774 A CN 201210012774A CN 102540155 A CN102540155 A CN 102540155A
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Abstract
The invention discloses a radar integrated radiation power detection method which comprises the following steps of: according to the technical requirements, connecting a microwave low power meter (10) with an adjustable attenuator (11), powering up and carrying out zero calibration; starting a radar and radiating and transmitting a signal to a testing auxiliary antenna (7), wherein the maximum radiation direction of a tested radar antenna (8) is aligned with the testing auxiliary antenna and the two antennas have consistent directions of polarization; according to the size of a radiation power of the tested radar, regulating an attenuator value of the microwave low power meter and testing an integrated radiation power of the tested radar by the microwave low power meter; and changing different transmit frequency bands of the radar and respectively measuring the integrated radiation powers of the radar on different frequency bands by using the method. According to the invention, due to the adoption of a non-separation non-contact measurement mode of measuring the spacial radiation power of the radar, the capability that the radar radiates the power to the air can be really reflected, the performance of a complete machine on an integrated transmission and radiation channel can be well reflected and the radar integrated radiation power detection method is suitable for detecting and evaluating the transmit power of the radar under the out-field and field conditions.
Description
Technical field
The present invention relates to radar complete machine Performance Detection field, relate in particular to radar combined radiation power detecting method.
Background technology
The watt level of transmitter 1 output with the performance of power that directly influences radar and antijamming capability, is an important parameter of radar complete machine.Particularly use through long-term at radar; The change of some electric parameter of unit, parts; All can cause the decline of output power of transmitter, and then make the distance of radar discovery and automatically track target descend, so should regularly measure the radar transmitter output power.
Usually the power definition of emission coefficient being delivered to the antenna input signal is the output power of emission coefficient; Sometimes for convenient measurement; The power that also can be defined on the given load is the output power of emission coefficient; What classic method was surveyed then is this power, and what it was estimated is radar antenna emissive power before.
The excessive attenuation amount (degree of coupling) that
sets to coupling mechanism is C (dB); The terminal is a matched load; The transmitter average power is Pcp; Miniwatt instrumentation value is Pc, defines according to the degree of coupling:
In the test, realize low-power measurements with power meter card 6, special-purpose directional coupler 2 and terminator 4 are selected or developed to corresponding tested radar transmitter frequency range and structure correspondingly for use.Adopt general purpose radar equipment portable intelligent to detect diagnostic system 6 and carry out power test, the calculating from the operation steps of the connection of instrument, radar to measurement result, to whole test process, system provides the test guiding, can directly show measurement result.
Depend mainly on the calibration precision of directional coupler excessive attenuation amount with the measuring accuracy of directional coupler Power Conversion method measurand transmitter power.
Concrete method of testing is following:
(1) tests at last antenna pedestal and branch road waveguide position, pull down and the branch road waveguide.
(2) insert directional coupler and absorbing load at last feeder line and branch road waveguide place.
(3) radar, detector cabinet, the equal reliable ground of power probe.
(4) radar, tester connect.
(5) power meter is more accurate.Open the power meter virtual panel, the power meter probe is connected to the 1mW output terminal, clicks " calibration " button, observes whether virtual panel " The measured results show " is 1mW; If be not equal to 1mW, adjusting power meter card side calibration potentiometer makes it equal 1mW; Then, unload probe, setup test.
(6) transmitter raises and is depressed into the magnetron current ratings, after waiting to stablize power meter probe 3 is received the directional coupler output terminal.
(7) click " power measurement " button, carry out power test.
(8) unload the power meter probe, fall the transmitter high pressure.
The subject matter that classic method exists: need disassemble the radar antenna-feedback system, test error is big, and testing procedure is loaded down with trivial details, and the emissive power of part before can only the instrumentation radar antenna.
Summary of the invention
Technical matters to be solved by this invention provides a kind of new radar emission power testing method, and the assessment radar complete machine performance that can prepare provides a kind of detection method of radar combined radiation power.
For realizing above-mentioned technical matters, the invention provides a kind of radar combined radiation power detecting method, it is characterized in that: this method may further comprise the steps:
Step 1: according to technical requirement microwave miniwatt meter (10) and adjustable attenuator (11) are connected and to power up and school zero;
Step 2: the radar start, to test auxiliary antenna (7) Radiation Emission signal, the maximum direction of said tested radar antenna (8) radiation is aimed at test auxiliary antenna (7), and the polarised direction of two antennas is consistent;
Step 3: according to the size of tested radar emission power, regulate the attenuator values of microwave miniwatt meter (10), utilize the tested radar combined radiation power of microwave miniwatt meter (10) test;
Step 4: change radar distinct transmit frequency range, use the said method combined radiation power of instrumentation radar different frequency range respectively.
Said adjustable attenuator (11) can be adjustable in the 10dB-30dB precision.
The measuring distance D of said test auxiliary antenna (7) and tested radar is 35 ~ 45 meters, and the antenna height H of test auxiliary antenna is more than 5 meters.
Said microwave miniwatt meter (10) can realize testing the microwave power measurement to the milliwatt level of microwatt that auxiliary antenna receives, and has higher measuring accuracy.
The present invention proposes a kind of new radar emission power testing method, the assessment radar complete machine performance that can prepare provides a kind of detection method of radar combined radiation power.The present invention is under the certain frequency of radar, power emission condition; Measure average power apart from place, a certain space on the radiating antenna electric axis extended line; It can reflect the influence that radar tactical performance is brought because of antenna deformation, loss etc. by the composite factor decision of radar transmitter total emission power, radar antenna feeder loss power, radar electromagnetic wave spatial attenuation power, testing tool decay power.
The present invention utilizes the space electromagenetic wave radiation; Employing is not disintegrated, non-contact measurement radar combined radiation power; Can truly reflect the ability of radar to aerial radiation power; Can better reflect the complete machine performance on whole emission, the radiation channel, be fit under outfield and the field condition radar emission power detection and assessment.
Description of drawings
Fig. 1 tradition radar transmitter output power test philosophy figure.
Fig. 2 radar combined radiation power detecting method schematic diagram.
Among the figure: 1, transmitter, 2, directional coupler, 3, power probe, 4, terminator; 5, intelligent checking system, 6, the power meter card, 7, the test auxiliary antenna, 8, radar antenna; 9, radar truck, 10, microwave miniwatt meter, 11, adjustable attenuator, 12, radar receiver.
Embodiment
Step 1: test is prepared, according to technical requirement to power test equipment (being microwave miniwatt meter 10) and power adjustments equipment (being adjustable attenuator 11) connect power up and the school zero.
(1) sets up tested radar.It is smooth that tested radar should be erected at physical features, and it is smooth that tested radar should be erected at physical features, openr field on the ground, periphery do not have big barrier and reflecting body.
(2) connect testing apparatus.Be 40 meters apart from the radar test distance B, the vertical antenna tower sets up checkout equipment.Testing apparatus comprises test auxiliary antenna 7, accurate adjustable attenuator 11, microwave miniwatt meter 10, and through the microwave low-loss cable they are coupled together, and to microwave miniwatt meter school zero.
Attenuator is should precision adjustable continuously, and has bigger dynamic range, to adapt to the needs to variety classes radar combined radiation power test.
Test auxiliary antenna 7 overhead antenna height H is more than 5 meters, reduces the influence of ground return to greatest extent.
Step 2: the radar start, to testing apparatus electromagnetic horn Radiation Emission signal, the maximum direction of said tested radar antenna 8 radiation is aimed at the testing apparatus electromagnetic horn, and the polarised direction of two antennas is consistent.
(1) radar antenna 8 is aimed at.The maximum direction of the aerial radiation of tested radar must be aimed at the testing apparatus electromagnetic horn, and the polarised direction of antenna must be consistent with radar.At first pass through the gun sight on the radar antenna, radar antenna and test auxiliary antenna are aimed at, guarantee the maximum direction aligning of tested radar antenna radiation test horn antenna.
(2) polarization mode of adjusting radar test electromagnetic horn makes the polarised direction of two antennas consistent.
Step 3: according to the size of tested radar emission power, regulate the attenuator values of testing apparatus, utilize microwave miniwatt instrumentation to try tested radar combined radiation power.
According to the emissive power of tested radar, regulate the precision attenuator pad value, the microwave power that utilizes microwave miniwatt instrumentation to try and receive.
Step 4: change radar distinct transmit frequency range, use the said method combined radiation power of instrumentation radar different frequency range respectively.
According to the difference of different radar emission wave bands, test a wave band combined radiation power after, regulate the radar emission frequency range, utilize microwave miniwatt meter to test, all test up to all frequency ranges and finish.
The present invention utilizes the electromagnetic wave space radiation, adopts accurate adjustable attenuator of microwave and microwave miniwatt instrumentation examination radar combined radiation power.Because accurate adjustable attenuator test dynamic range is big; Microwave miniwatt meter has higher measuring accuracy; Can directly detect the radar complete machine to the electromagnetic ability of space radiation; Be applicable to that antenna pattern is parabolic, wave beam is the test of combined radiation power of fire control radar, weather radar, the airport track and guidance radar of needle-like.The process of the test debugging is simple, convenient, easy operating.
The present invention proposes a kind of new radar complete machine appraisal procedure; It is measurement to radar emission full tunnel radiation power; Do not disintegrate, noncontact, full tunnel formula instrumentation radar space radiation power; Can truly reflect the ability of radar, can better reflect the complete machine performance on whole emission, the radiation channel, be fit under outfield and the field condition radar emission power detection and assessment to aerial radiation power.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limit the present invention; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (4)
1. radar combined radiation power detecting method, it is characterized in that: this method may further comprise the steps:
Step 1: according to technical requirement microwave miniwatt meter (10) and adjustable attenuator (11) are connected and to power up and school zero;
Step 2: the radar start, to test auxiliary antenna (7) Radiation Emission signal, the maximum direction of said tested radar antenna (8) radiation is aimed at test auxiliary antenna (7), and the polarised direction of two antennas is consistent;
Step 3: according to the size of tested radar emission power, regulate the attenuator values of microwave miniwatt meter (10), utilize the tested radar combined radiation power of microwave miniwatt meter (10) test;
Step 4: change radar distinct transmit frequency range, use the said method combined radiation power of instrumentation radar different frequency range respectively.
2. radar combined radiation power detecting method according to claim 1 is characterized in that: said adjustable attenuator (11) can be adjustable in the 10dB-30dB precision.
3. radar combined radiation power detecting method according to claim 1 is characterized in that: the measuring distance D of said test auxiliary antenna (7) and tested radar is 35 ~ 45 meters, and the antenna height H of test auxiliary antenna is more than 5 meters.
4. radar antenna combined radiation power detecting method according to claim 1; It is characterized in that: said microwave miniwatt meter (10) can realize testing the microwave power measurement to the milliwatt level of microwatt that auxiliary antenna receives, and has higher measuring accuracy.
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| CN2012100127747A CN102540155A (en) | 2012-01-16 | 2012-01-16 | Radar integrated radiation power detection method |
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| CN2012100127747A CN102540155A (en) | 2012-01-16 | 2012-01-16 | Radar integrated radiation power detection method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738710A (en) * | 2016-03-29 | 2016-07-06 | 北京森馥科技股份有限公司 | Radio-frequency electromagnetic environment monitoring method |
| CN108120962A (en) * | 2017-11-23 | 2018-06-05 | 北京遥感设备研究所 | A kind of power-up guard method of weather radar transmitter |
| CN113589273A (en) * | 2021-08-11 | 2021-11-02 | 中国科学院大气物理研究所 | Millimeter wave/infrared active and passive imaging detection device and method |
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| US3199107A (en) * | 1962-09-04 | 1965-08-03 | Westinghouse Canada Ltd | Radar testing equipment |
| CN101105513A (en) * | 2007-06-27 | 2008-01-16 | 浙江大学 | Antenna radiation characteristics experimental device |
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| US3199107A (en) * | 1962-09-04 | 1965-08-03 | Westinghouse Canada Ltd | Radar testing equipment |
| CN101105513A (en) * | 2007-06-27 | 2008-01-16 | 浙江大学 | Antenna radiation characteristics experimental device |
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| 《军事医学科学院院刊》 20030831 陈浩宇 高功率微波源的改建及其测试系统的建立 第1.2节和图1 2，3 第27卷, 第4期 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738710A (en) * | 2016-03-29 | 2016-07-06 | 北京森馥科技股份有限公司 | Radio-frequency electromagnetic environment monitoring method |
| CN105738710B (en) * | 2016-03-29 | 2018-09-11 | 北京森馥科技股份有限公司 | A kind of radio-frequency electromagnetic method of environmental monitoring |
| CN108120962A (en) * | 2017-11-23 | 2018-06-05 | 北京遥感设备研究所 | A kind of power-up guard method of weather radar transmitter |
| CN108120962B (en) * | 2017-11-23 | 2021-04-09 | 北京遥感设备研究所 | Power-on protection method of meteorological radar transmitter |
| CN113589273A (en) * | 2021-08-11 | 2021-11-02 | 中国科学院大气物理研究所 | Millimeter wave/infrared active and passive imaging detection device and method |
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Application publication date: 20120704 |