CN110161338A - A kind of test method for leading electromagnetic compatibility time domain management between passive electronic system - Google Patents
A kind of test method for leading electromagnetic compatibility time domain management between passive electronic system Download PDFInfo
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- CN110161338A CN110161338A CN201910465466.1A CN201910465466A CN110161338A CN 110161338 A CN110161338 A CN 110161338A CN 201910465466 A CN201910465466 A CN 201910465466A CN 110161338 A CN110161338 A CN 110161338A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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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
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Abstract
The invention discloses a kind of test methods for leading electromagnetic compatibility time domain management between passive electronic system, comprising the following steps: correctness of the step 1) in the black-out-signal output end test black-out-signal for actively emitting equipment；Step 2) draws the intermediate-freuqncy signal after its down coversion inside the receiver of passive receiving device, and accesses the receiving channel all the way of dual channel oscilloscope；The black-out-signal received is drawn from the black-out-signal receiving port of passive receiving device, accesses the another way receiving channel of dual channel oscilloscope；Step 3) carries out the functional verification of blanking management on the basis of step 2).The method of the present invention enables there is the blanking management used when interfering between the passive electronic system of macrotype platform master with faster, more accurately test mode completes functional check and flow verification；When breaking down, positioning problems can be rapidly completed in this way.
Description
Technical field
The present invention relates to electromagnetic compatibility time domains between electromagnetic compatibility testing technology more particularly to a kind of passive electronic system of master
The test method of management.
Background technique
A large amount of radio-frequency apparatus are arranged on general macrotype platform, including powerful actively emits equipment (such as radar, active
Emit electromagnetic wave), passive receiving device (such as electronic reconnaissance equipment, itself do not emit electromagnetic wave) etc., set in corresponding electromagnetic compatibility
In meter by equipment room spatial position optimization can not completely eliminate between existing interference problem.And equipment room on macrotype platform
Interference problem it is the most prominent actively to emit the interference between equipment and passive receiving device.Due to the equipment of passive receiving device
Feature, sensitivity threshold is lower, is easy to the electromagnetic interference by other equipment, causes receiver front end amplifier saturation, performance
Degrade, more seriously will cause fore device and burn.
Blanking management is the method being commonly used on macrotype platform, belongs to the management of EMC measure in time domain, is commonly used
Actively emit the interference problem between equipment and passive receiving device in elimination.This method is to be based on actively emitting equipment transmitting arteries and veins
The duration (Microsecond grade) of punching is shorter (duty ratio is small) relative to the pulse period (Millisecond), i.e., two transmitting pulse spacings
Time is long, and considers temporarily to interrupt electronic reconnaissance equipment operation of receiver within the duration of radar transmitted pulse, that is, allows electricity
Sub- reconnaissance equipment receiver does not receive external signal.It sees on the whole, blanking is still able to maintain the observation of electronic reconnaissance equipment receiver
It is not interrupted, it will not lossing signal.But thus bring the function validity check of blanking management and asking for management process verifying
Topic.
The functional check of blanking management and flow verification are mainly logical in the actual tests stage, traditional EMC test
Crossing the interference result that practical detecting actively emits equipment at passive receiving device and disappearing is judgment basis.If blanking management effect
Unobvious or invalid, immediate cause is then actively to emit equipment, blanking forwarding device or passive reconnaissance equipment receiving end to have event
Barrier, and the method can not quick fault point, cause the retardation of test progress.For this reason, it may be necessary to new test method is studied, with
Evade the above problem.
Summary of the invention
The technical problem to be solved in the present invention is that for the defects in the prior art, providing a kind of passive electronic system of master
Between electromagnetic compatibility time domain management test method, electromagnetic compatibility time domain management is asked between the passive electronic system of macrotype platform master
When topic, it is able to achieve fast and accurately test problem positioning.
The technical solution adopted by the present invention to solve the technical problems is: between a kind of passive electronic system of master when electromagnetic compatibility
The test method of domain management, comprising the following steps:
Correctness of the step 1) in the black-out-signal output end test black-out-signal for actively emitting equipment；
The detailed process of the step are as follows:
1.1) it checks and actively emits whether the polarity of black-out-signal, pulsewidth, amplitude at equipment meet relevant interface requirement；
1.2) to check whether the sequential relationship for actively emitting between the synchronization signal of equipment and black-out-signal meets electromagnetism simultaneous
Hold design requirement；
It is specific as follows:
The synchronization signal for actively emitting equipment and black-out-signal are introduced into dual channel oscilloscope, check the sequential relationship of the two
Whether meet EMC Design requirement, i.e., compared by oscillograph, using synchronization signal as trigger signal, checks the timing of the two
Relationship: whether black-out-signal forward position and synchronization signal forward position meet lead contractual requirements；Check the level magnitudes of black-out-signal
Whether high level contractual requirements are met；Check whether black-out-signal polarity meets positive-negative polarity contractual requirements；
Wherein, the pulse front edge that black-out-signal lead subtracts synchronization signal as the pulse front edge of black-out-signal is set；
Step 2) draws the intermediate-freuqncy signal after its down coversion inside the receiver of passive receiving device, and accesses bilateral
The receiving channel all the way of road oscillograph；The black-out-signal received is drawn from the black-out-signal receiving port of passive receiving device, is connect
Enter the another way receiving channel of dual channel oscilloscope；
Step 3), the functional verification that blanking management is carried out on the basis of step 2)；
The detailed process of the step are as follows:
3.1) at passive receiving device, check that the amplitude of the black-out-signal by long-distance cable transmission and signal rise
Whether the time meets the requirements, if correctly can be identified and be used by passive receiving device；
3.2) the signal sequence relationship for checking dual channel oscilloscope channel A and channel B, at this point, black-out-signal high level area
Between should be able to be completely comprising the interference signal in passive receiving device intermediate-freuqncy signal, using black-out-signal as trigger signal, in inspection
Whether frequency signal falls into the high level section of black-out-signal just, and the lead and trail edges by adjusting black-out-signal high level broaden
To complete the test of electromagnetic compatibility time domain management between the passive electronic system of macrotype platform master.
According to the above scheme, the lead and trail edges broadening of black-out-signal high level is adjusted in the step 3.2), specific as follows:
It is appeared in outside black-out-signal high level forward position if interference signal in intermediate-freuqncy signal is stable, illustrates active devices
Black-out-signal lead it is inadequate, then at active devices adjust black-out-signal high level forward position carry out black-out-signal lead
It adjusts；
It appears in after black-out-signal high level if interference signal in intermediate-freuqncy signal is stable along outer, needs to set in forwarding
Standby place carries out the trailing-edge broadening of black-out-signal；
Black-out-signal lead and trailing-edge broadening are adjusted until the interference signal in intermediate-freuqncy signal completely falls into blanking letter
Number high level section, thinks that black-out-signal lead and trailing-edge broadening amount are met the requirements at this time.
The beneficial effect comprise that:
1) test method for establishing electromagnetic compatibility time domain management between a kind of passive electronic system of macrotype platform master, makes large size
The blanking management used when there is interference between the passive electronic system of platform master can be with faster, more accurately test mode completes function
It can inspection and flow verification；When breaking down, positioning problems can be rapidly completed in this way.
2) actively emitting when equipment emits because being interfered caused by multipath effect, can have inside receiver and accurately sentence
It is disconnected, therefore improve the precision of blanking management between the passive electronic system of macrotype platform master.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 be the embodiment of the present invention the passive electronic system of macrotype platform master between electromagnetic compatibility time domain management test signal
Figure；
Fig. 2 is that the black-out-signal of the embodiment of the present invention checks test schematic diagram；
Fig. 3 is the blanking management functional check schematic diagram of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.
As shown in Figure 1, between a kind of passive electronic system of macrotype platform master electromagnetic compatibility time domain management test method, to mention
The testing efficiency of electromagnetic compatibility time domain management between the main passive electronic system of height, when malfunction elimination when reducing failure problem
Between,
Fig. 1 gives the schematic diagram of electromagnetic compatibility time domain management test between the passive electronic system of macrotype platform master, and large size is flat
Electromagnetic interference mainly emits electromagnetic wave by antenna by active devices between the passive electronic system of platform master, and electromagnetic wave passes through straight-line transmitting
Defeated or Multipath Transmission enters the antenna of passive reconnaissance equipment, causes the interference of passive reconnaissance equipment receiving channel.Macrotype platform master
The management of electromagnetic compatibility time domain is then the solution for the above interference problem between passive electronic system, and active devices are in transmitting electricity
Black-out-signal is generated when magnetic wave in advance, and is sent by low loss cable to the progress signal shaping of special forwarding device and is put
Greatly, passive equipment is then transferred to, after passive equipment reception at black-out-signal level is shutdown signal in high a period of time
Unit is managed, to realize time-sharing work between main passive equipment in the time domain, achievees the purpose that eliminate interference.From Fig. 1, it can see
The test of electromagnetic compatibility time domain management includes transmitting terminal test and receiving end test two between the passive electronic system of macrotype platform master out
Part.
The test method of electromagnetic compatibility time domain management, the technical solution of use between a kind of passive electronic system of macrotype platform master
It is to be realized by following testing procedure:
Step 1: in the correctness for actively emitting equipment black-out-signal output end test black-out-signal；
The detailed process of the step are as follows:
(1) it checks and actively emits whether the polarity of black-out-signal, pulsewidth, amplitude at equipment meet relevant interface requirement；
(2) check whether the sequential relationship actively emitted between the synchronization signal of equipment and black-out-signal meets electromagnetic compatibility
Design requirement；The synchronization signal for actively emitting equipment and black-out-signal are introduced into dual channel oscilloscope, check that the timing of the two is closed
Whether system meets EMC Design requirement, wherein defines the pulse front edge that black-out-signal lead is black-out-signal and subtracts together
Walk the pulse front edge of signal.
As shown in Fig. 2, transmitting terminal test mainly to the synchronization signal for actively emitting equipment and is hidden by dual channel oscilloscope
Shadow signal is carried out while being tested, and is compared by oscillograph, at this time using synchronization signal as trigger signal, checks that the timing of the two is closed
Whether system, i.e. black-out-signal forward position and synchronization signal forward position meet lead contractual requirements；Check the level magnitudes of black-out-signal
Whether high level contractual requirements are met；Check whether black-out-signal polarity meets positive-negative polarity contractual requirements.
Step 2: the intermediate-freuqncy signal after drawing its down coversion inside passive receiving device receiver, and access binary channels
The receiving channel A all the way of oscillograph；The black-out-signal received is drawn from passive receiving device black-out-signal receiving port, access is double
The another way receiving channel B of oscilloscope channel.
Step 3: carrying out the functional verification of blanking management on the basis of step 2；
The detailed process of the step are as follows:
(1) at passive receiving device, check that the amplitude of the black-out-signal by long-distance cable transmission and signal rise
Whether the time meets the requirements, if correctly can be identified and be used by passive receiving device；
(2) for passive receiving device due to being influenced by the external transmitting for actively emitting equipment, intermediate-freuqncy signal includes actively
Emit the electromagnetic signal of equipment.Check the signal sequence relationship of dual channel oscilloscope channel A and channel B, black-out-signal is high at this time
It level section should be able to be completely comprising the interference signal in passive receiving device intermediate-freuqncy signal.Such as the interference signal in intermediate-freuqncy signal
Stable appears in outside black-out-signal high level forward position, then illustrates that the black-out-signal lead of active devices is inadequate, need in master
It is adjusted at dynamic equipment；It appears in after black-out-signal high level as the interference signal in intermediate-freuqncy signal is stable along outer, then needs
The trailing-edge broadening of black-out-signal is carried out at forwarding device.Black-out-signal lead and trailing-edge broadening are adjusted until in intermediate-freuqncy signal
Interference signal completely falls into black-out-signal high level section, thinks that black-out-signal lead and trailing-edge broadening amount satisfaction are wanted at this time
It asks.
As shown in figure 3, receiving end test is to work normally when progress in active devices power emission, passive equipment
, black-out-signal is connected by low loss cable and is transmitted.This test method, which is used, is used as bilateral for black-out-signal (abbreviation signal A)
The first via of road oscillograph inputs, while the intermediate frequency after passive equipment receiver down coversion tests mouth for intermediate-freuqncy signal (abbreviation
Signal B) it is inputted as the second tunnel of dual channel oscilloscope, using signal A as trigger signal, check whether signal B falls into signal A just
High level section, the passive electronic system of macrotype platform master is completed by the broadening of the lead and trail edges of adjustment signal A high level
Between electromagnetic compatibility time domain management test.Wherein, the forward position of signal A high level is adjusted at the active devices in Fig. 1,
The trailing-edge broadening of high level is to adjust to complete at forwarding device in Fig. 1.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (2)
1. a kind of test method for leading electromagnetic compatibility time domain management between passive electronic system, which comprises the following steps:
Correctness of the step 1) in the black-out-signal output end test black-out-signal for actively emitting equipment；
The detailed process of the step are as follows:
1.1) it checks and actively emits whether the polarity of black-out-signal, pulsewidth, amplitude at equipment meet relevant interface requirement；
1.2) check whether the sequential relationship for actively emitting between the synchronization signal of equipment and black-out-signal meets electromagnetic compatibility and set
Meter requires；
It is specific as follows:
The synchronization signal and black-out-signal that equipment will actively be emitted introduce dual channel oscilloscope, and whether the sequential relationship both checked
Meet EMC Design requirement, i.e., compared by oscillograph, using synchronization signal as trigger signal, checks that the timing of the two is closed
System: whether black-out-signal forward position and synchronization signal forward position meet lead contractual requirements；Checking the level magnitudes of black-out-signal is
It is no to meet high level contractual requirements；Check whether black-out-signal polarity meets positive-negative polarity contractual requirements；
Wherein, the pulse front edge that black-out-signal lead subtracts synchronization signal as the pulse front edge of black-out-signal is set；
Step 2) draws the intermediate-freuqncy signal after its down coversion inside the receiver of passive receiving device, and accesses binary channels and show
The receiving channel all the way of wave device；The black-out-signal received is drawn from the black-out-signal receiving port of passive receiving device, access is double
The another way receiving channel of oscilloscope channel；
Step 3), the functional verification that blanking management is carried out on the basis of step 2)；
The detailed process of the step are as follows:
3.1) at passive receiving device, the amplitude and signal elevating time of the black-out-signal by long-distance cable transmission are checked
Whether meet the requirements, if correctly can be identified and be used by passive receiving device；
3.2) the signal sequence relationship for checking dual channel oscilloscope channel A and channel B, at this point, black-out-signal high level section is answered
Can completely includes the interference signal in passive receiving device intermediate-freuqncy signal, using black-out-signal as trigger signal, checks intermediate frequency letter
The high level section for number whether falling into black-out-signal just, the lead and trail edges by adjusting black-out-signal high level broaden come complete
At the test of electromagnetic compatibility time domain management between the passive electronic system of macrotype platform master.
2. the test method of electromagnetic compatibility time domain management, feature exist between the passive electronic system of master according to claim 1
In, the lead and trail edges broadening of black-out-signal high level is adjusted in the step 3.2), specific as follows:
It is appeared in outside black-out-signal high level forward position if interference signal in intermediate-freuqncy signal is stable, illustrates hideing for active devices
Shadow signal lead is inadequate, then the forward position that black-out-signal high level is adjusted at active devices carries out black-out-signal lead tune
Section；
It appears in after black-out-signal high level if interference signal in intermediate-freuqncy signal is stable along outer, needs at forwarding device
Carry out the trailing-edge broadening of black-out-signal；
Black-out-signal lead and trailing-edge broadening are adjusted until the interference signal in intermediate-freuqncy signal completely falls into black-out-signal height
Level section thinks that black-out-signal lead and trailing-edge broadening amount are met the requirements at this time.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703213A (en) * | 2019-10-09 | 2020-01-17 | 中国舰船研究设计中心 | Radar interference environment equivalent physical simulation method and device |
| CN111337888A (en) * | 2020-04-13 | 2020-06-26 | 北京航天长征飞行器研究所 | Dense decoy jamming method, computer device and computer readable storage medium |
| CN112084294A (en) * | 2020-09-14 | 2020-12-15 | 重庆长安新能源汽车科技有限公司 | Whole vehicle electromagnetic compatibility grading management method based on artificial intelligence |
| CN112418309A (en) * | 2020-11-20 | 2021-02-26 | 中国舰船研究设计中心 | Electromagnetic compatibility management and control method prediction method based on machine learning |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1798982A (en) * | 2003-06-02 | 2006-07-05 | 摩托罗拉公司 | Detection and reduction of periodic jamming signals in GPS receivers and methods therefor |
| CN1924608A (en) * | 2006-09-15 | 2007-03-07 | 中国舰船研究设计中心 | Radar antenna electromagnetic interference suppressor and shielding device |
| CN103454523A (en) * | 2013-08-22 | 2013-12-18 | 北京航空航天大学 | Method for measuring electromagnetic compatibility between receiving device and transmitting device based on geographical information system |
| CN105785165A (en) * | 2016-03-02 | 2016-07-20 | 北京盈想东方科技发展有限公司 | Portable electromagnetic compatibility detection device and detection method |
| WO2017087049A1 (en) * | 2015-11-19 | 2017-05-26 | Continental Automotive Systems, Inc. | Multi-phase turn-on blanking time with vbatt- based fault threshold voltage |
| CN106814353A (en) * | 2017-01-24 | 2017-06-09 | 成都泰格微电子研究所有限责任公司 | A kind of Radar Signal Processing System |
| CN109031232A (en) * | 2018-08-08 | 2018-12-18 | 中国航空工业集团公司雷华电子技术研究所 | A kind of adaptive blanking coefficient altitudeline clutter suppressing method |
| CN109581304A (en) * | 2018-12-05 | 2019-04-05 | 航天南湖电子信息技术股份有限公司 | A kind of counterreconnaissance means for anti-jamming and its method |
-
2019
- 2019-05-30 CN CN201910465466.1A patent/CN110161338B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1798982A (en) * | 2003-06-02 | 2006-07-05 | 摩托罗拉公司 | Detection and reduction of periodic jamming signals in GPS receivers and methods therefor |
| CN1924608A (en) * | 2006-09-15 | 2007-03-07 | 中国舰船研究设计中心 | Radar antenna electromagnetic interference suppressor and shielding device |
| CN103454523A (en) * | 2013-08-22 | 2013-12-18 | 北京航空航天大学 | Method for measuring electromagnetic compatibility between receiving device and transmitting device based on geographical information system |
| WO2017087049A1 (en) * | 2015-11-19 | 2017-05-26 | Continental Automotive Systems, Inc. | Multi-phase turn-on blanking time with vbatt- based fault threshold voltage |
| CN105785165A (en) * | 2016-03-02 | 2016-07-20 | 北京盈想东方科技发展有限公司 | Portable electromagnetic compatibility detection device and detection method |
| CN106814353A (en) * | 2017-01-24 | 2017-06-09 | 成都泰格微电子研究所有限责任公司 | A kind of Radar Signal Processing System |
| CN109031232A (en) * | 2018-08-08 | 2018-12-18 | 中国航空工业集团公司雷华电子技术研究所 | A kind of adaptive blanking coefficient altitudeline clutter suppressing method |
| CN109581304A (en) * | 2018-12-05 | 2019-04-05 | 航天南湖电子信息技术股份有限公司 | A kind of counterreconnaissance means for anti-jamming and its method |
Non-Patent Citations (4)
| Title |
|---|
| I N KARTSAN ET.AL: "electromagnetic compatibility of ground system of near navigation，based on the use of GNSS and pseudolites", 《IOP CONFERENCE SERIES：MATERIALS SCIENCE AND ENGINEERING》 * |
| 李兵舰 等: "舰载雷达干扰设备多目标干扰能力分析", 《舰船电子对抗》 * |
| 田益民: "匿影管理对舰载电子侦察装备影响的仿真", 《系统仿真技术》 * |
| 黄清云 等: "舰艇电磁兼容管控效果分析", 《指挥控制与仿真》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703213A (en) * | 2019-10-09 | 2020-01-17 | 中国舰船研究设计中心 | Radar interference environment equivalent physical simulation method and device |
| CN111337888A (en) * | 2020-04-13 | 2020-06-26 | 北京航天长征飞行器研究所 | Dense decoy jamming method, computer device and computer readable storage medium |
| CN112084294A (en) * | 2020-09-14 | 2020-12-15 | 重庆长安新能源汽车科技有限公司 | Whole vehicle electromagnetic compatibility grading management method based on artificial intelligence |
| CN112084294B (en) * | 2020-09-14 | 2022-07-26 | 重庆长安新能源汽车科技有限公司 | Whole vehicle electromagnetic compatibility grading management method based on artificial intelligence |
| CN112418309A (en) * | 2020-11-20 | 2021-02-26 | 中国舰船研究设计中心 | Electromagnetic compatibility management and control method prediction method based on machine learning |
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