CN107037271A - A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm - Google Patents
A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm Download PDFInfo
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- CN107037271A CN107037271A CN201710375476.7A CN201710375476A CN107037271A CN 107037271 A CN107037271 A CN 107037271A CN 201710375476 A CN201710375476 A CN 201710375476A CN 107037271 A CN107037271 A CN 107037271A
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- oscillograph
- radiation source
- dipole antenna
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells
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- Electromagnetism (AREA)
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Abstract
The invention belongs to electrical equipment technical field, more particularly to a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm.The present invention includes oscillograph, in addition to dipole antenna, the support, coaxial cable, casing and the computer that support dipole antenna；Wherein, oscillograph is provided with casing, support is connected with the top of casing, frame bottom is support body, the dipole antenna support section with reserved location is connected with support body top, dipole antenna is located in reserved location, matched with reserved location；With coaxial cable phase in succession, the other end of coaxial cable is connected dipole antenna with oscillograph, and oscillograph is connected by lan line with computer.The present invention have it is simple in construction, it is reasonable in design, and can fast accurate detect generation electromagnetic wave.The redundant signals waveform optimization obtained by 8 antennas the result of orientation, and device over all Integrationization is higher, is easy to vehicle-mounted.
Description
Technical field
The invention belongs to electrical equipment technical field, more particularly to a kind of electromagnetism based on cross-correlated signal Subspace algorithm
Wave radiation source investigation system.
Background technology
In power system, shelf depreciation or spark discharge are insulating materials aging, the omen of failure generation, are discharged simultaneously
Produced high frequency radiation electromagnetic wave can also be made to the communication equipment near electric line, transformer station, television broadcasting signal etc.
Into electromagnetic interference.Therefore, in order to find insulating materials aging position early, avoid insulation fault and avoid to electromagnetism ring around
The interference in border to the position of discharge source, it is necessary to be accurately positioned.
In this regard, the invention provides a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm,
To detect the place of radiation source.
The content of the invention
For above-mentioned problems of the prior art, the present invention provides a kind of based on cross-correlated signal Subspace algorithm
Wave electromagnetic radiation source investigation system, it is therefore an objective to provide a kind of simple in construction, it is reasonable in design, and can fast accurate detect generation
The equipment of electromagnetic wave.
In order to realize foregoing invention purpose, the present invention is achieved by the following technical solutions：
A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm, including oscillograph, in addition to dipole
Sub-antenna, support, coaxial cable, casing and the computer for supporting dipole antenna；Wherein, oscillograph is provided with casing,
Support is connected with the top of casing, frame bottom is support body, the dipole day with reserved location is connected with support body top
Line support section, dipole antenna is located in reserved location, is matched with reserved location；Dipole antenna and coaxial cable phase
In succession, the other end of coaxial cable is connected with oscillograph, and oscillograph is connected by lan line with computer.
The support section of the dipole antenna carries the reserved location for meeting dipole antenna shape and diameter dimension, should
Reserved location is provided with 8 altogether, 8 dipole antennas is just matched with 8 reserved locations；8 reserved locations are linear
Distribution, interval is consistent, and the length at interval is determined by the centre frequency of dipole antenna.
The coaxial cable is provided with 8, is connected respectively with 8 dipole antennas, the length of 8 coaxial cables, material
Unanimously.
The oscillograph is 8 oscilloscope channels or two 4 oscilloscope channels.
The oscillograph sampling time interval is in 0.05ns and following.
The casing is enclosed housing, and multiple threading holes are reserved with behind casing, and the material of casing is tool
The material for having anti-battery wave radiation function is made.
The cabinet design is that rear portion is Open architecture.
The casing front and rear is Open architecture.
The coaxial cable is connected on oscillograph through threading hole, and the lan line on oscillograph is worn also through reserved
String holes is connected with computer.
Using a kind of method for surveying of the wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm, including
Following operating procedure：
（1）The waveform of electric discharge electromagnetic wave is received by 8 antennas；
（2）Signal waveform shows and transmitted by lan line to notebook computer on oscillograph；
（3）Analyze and utilize the one-dimensional division Subspace algorithm based on 8 groups of signals to calculate direction of arrival；
（4）Meanwhile, using the waveform of 8 groups of signals, 4 waveforms of arbitrary extracting recycle one-dimensional division Subspace algorithm to calculate and arrived
Come direction；
（5）The direction of arrival result that COMPREHENSIVE CALCULATING is drawn, obtains optimized results.
Advantages of the present invention effect is：The present invention have it is simple in construction, it is reasonable in design, and can fast accurate detect production
The equipment of raw electromagnetic wave.It can receive radiated electromagnetic wave by ultra-high frequency antenna, by oscillograph recording waveform, using one-dimensional
Cross-correlated signal Subspace algorithm calculate radiation source deflection with determine produce electromagenetic wave radiation equipment.Compared with similar
Product is compared, and the present invention passes through the redundant signals waveform optimization of the 8 antennas acquisitions result oriented, and device over all Integration
It is higher, it is easy to vehicle-mounted.
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：Dipole antenna 1, coaxial cable 2, support 3, oscillograph 4, computer 5, lan line 6, casing 7.
Embodiment
Embodiment 1：
The present invention is a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm, as shown in figure 1, bag
Include：8 dipole antennas 1, support 3, coaxial cable 2,8 oscilloscope channels 4 or the two 4 passage oscillographys of support dipole antenna
Device, computer 5 and casing 7.Support 3 is wherein fixedly connected with the top of casing 7, the bottom of support 3 is two fixing bracket bodies,
Be connected with rectangular dipole antenna support section on support body top, dipole antenna 1 and coaxial cable 2 mutually in succession, coaxially
The other end of cable 2 is connected with oscillograph 4, and oscillograph 4 is located in casing 7, and oscillograph 4 passes through lan line 6 and computer 5
It is connected, by the signal waveform of preservation, real-time incoming computer disposal.Described casing 7 is enclosed housing, in casing
Multiple threading holes are reserved with below, and the material of casing is made up of the material with anti-battery wave radiation function.Can during implementation
So that coaxial cable 2 is connected to 4 on oscillograph through threading hole, 4 on oscillograph on lan line 6 can also be through reserved
Threading hole is connected with computer 5.
The support section of the dipole antenna 1 carries the reserved location for meeting the shape of dipole antenna 1 and diameter dimension,
The reserved location is provided with 8 altogether, and 8 dipole antennas 1 are located in reserved location, makes 8 dipole antennas 1 just pre- with 8
Position is stayed to match.8 reserved locations are linearly distributed, and interval is consistent, and the length being spaced is by the center of dipole antenna
Frequency is determined, such as during 500MHz, at intervals of 30cm.
The coaxial cable 2 is also provided with 8, is connected respectively with 8 dipole antennas 1, the length of 8 coaxial cables 2
Degree, material are consistent.
Described oscillograph 4 is 8 passage oscillography, and the sampling time interval of oscillograph 4 connects in 0.05ns and following
Receive the oscillograph that signalling channel is 8 or two 4 passages.
In the use of the present invention, workflow is as follows：
1st, the waveform for the electromagnetic wave that discharges is received by 8 antennas；
2nd, signal waveform shows and transmitted by lan line to notebook computer on oscillograph；
3rd, analyze and calculate direction of arrival using the one-dimensional division Subspace algorithm based on 8 groups of signals；
4th, simultaneously, using the waveform of 8 groups of signals, 4 waveforms of arbitrary extracting recycle one-dimensional division Subspace algorithm to calculate and arrived
Direction；
5th, the direction of arrival result that COMPREHENSIVE CALCULATING is drawn, obtains optimized results；
By existing cross-correlated signal Subspace algorithm, that is, the one-dimensional square estimation technique, the side of radiated electromagnetic wave is calculated
To angle.
Embodiment 2：
Casing 7 can also be designed as rear portion for Open architecture by the present invention when implementing, and so more facilitate oscillograph with outer
Portion's cable connection, the other the same as in Example 1 is identical.
Embodiment 3：
Casing 7 can also be designed as front and rear for Open architecture, so also more conveniently show by the present invention when implementing
Ripple device is connected with External cable, and the other the same as in Example 1 is identical.
Embodiment 4：
Described oscillograph 4 is two 4 oscilloscope channels, and the other the same as in Example 1 is identical.
Claims (10)
1. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm, including oscillograph, it is characterized in that：
Also include dipole antenna, support support, coaxial cable, casing and the computer of dipole antenna；Wherein, set in casing
There is oscillograph, support is connected with the top of casing, frame bottom is support body, is connected with support body top with reserved location
Dipole antenna support section, dipole antenna is located in reserved location, is matched with reserved location；Dipole antenna with it is same
Mutually in succession, the other end of coaxial cable is connected shaft cable with oscillograph, and oscillograph is connected by lan line with computer
。
2. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The support section of the dipole antenna carries the reserved location for meeting dipole antenna shape and diameter dimension,
The reserved location is provided with 8 altogether, 8 dipole antennas is just matched with 8 reserved locations；8 reserved locations are in straight
Line is distributed, and interval is consistent, and the length at interval is determined by the centre frequency of dipole antenna.
3. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The coaxial cable is provided with 8, is connected respectively with 8 dipole antennas, the length of 8 coaxial cables, material
Unanimously.
4. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The oscillograph is 8 oscilloscope channels or two 4 oscilloscope channels.
5. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The oscillograph sampling time interval is in 0.05ns and following.
6. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The casing is enclosed housing, and multiple threading holes are reserved with behind casing, and the material of casing is tool
The material for having anti-battery wave radiation function is made.
7. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The cabinet design is that rear portion is Open architecture.
8. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The casing front and rear is Open architecture.
9. a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm according to claim 1,
It is characterized in that：The coaxial cable is connected on oscillograph through threading hole, and the lan line on oscillograph is also through reserved
Threading hole is connected with computer.
10. utilize a kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm described in claim 1
Method for surveying, it is characterized in that：Including following operating procedure：
（1）The waveform of electric discharge electromagnetic wave is received by 8 antennas；
（2）Signal waveform shows and transmitted by lan line to notebook computer on oscillograph；
（3）Analyze and utilize the one-dimensional division Subspace algorithm based on 8 groups of signals to calculate direction of arrival；
（4）Meanwhile, using the waveform of 8 groups of signals, 4 waveforms of arbitrary extracting recycle one-dimensional division Subspace algorithm to calculate and arrived
Come direction；
（5）The direction of arrival result that COMPREHENSIVE CALCULATING is drawn, obtains optimized results.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710375476.7A CN107037271A (en) | 2017-05-24 | 2017-05-24 | A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm |
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| CN201710375476.7A CN107037271A (en) | 2017-05-24 | 2017-05-24 | A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm |
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Cited By (2)
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| CN109358314A (en) * | 2018-10-19 | 2019-02-19 | 国网辽宁省电力有限公司电力科学研究院 | A kind of discharge source positioning device and method based on magnetic field radiofrequency signal |
| CN111694061A (en) * | 2020-05-13 | 2020-09-22 | 东华理工大学 | Multi-dipole-source emission device applied to electromagnetic exploration |
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| CN106646475A (en) * | 2016-11-29 | 2017-05-10 | 西安空间无线电技术研究所 | Microwave radiometer fully polarimetric digital correlation implementation method |
| CN206773084U (en) * | 2017-05-24 | 2017-12-19 | 国网辽宁省电力有限公司电力科学研究院 | A kind of wave electromagnetic radiation source investigation system based on cross-correlated signal Subspace algorithm |
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| CN1847876A (en) * | 2005-04-13 | 2006-10-18 | 中国科学院寒区旱区环境与工程研究所 | Ultrahigh frequency lightning radiation source detecting and locating system based on short base line time difference method |
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| CN109358314A (en) * | 2018-10-19 | 2019-02-19 | 国网辽宁省电力有限公司电力科学研究院 | A kind of discharge source positioning device and method based on magnetic field radiofrequency signal |
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