CN107255754A - A kind of electromagnetic radiation measuring modification method under the environment based on seanoise - Google Patents
A kind of electromagnetic radiation measuring modification method under the environment based on seanoise Download PDFInfo
- Publication number
- CN107255754A CN107255754A CN201710466760.5A CN201710466760A CN107255754A CN 107255754 A CN107255754 A CN 107255754A CN 201710466760 A CN201710466760 A CN 201710466760A CN 107255754 A CN107255754 A CN 107255754A
- Authority
- CN
- China
- Prior art keywords
- mrow
- msup
- seanoise
- electromagnetic radiation
- signal power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005670 electromagnetic radiation Effects 0.000 title claims abstract description 34
- 238000002715 modification method Methods 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 23
- 238000001228 spectrum Methods 0.000 claims abstract description 22
- 230000002902 bimodal effect Effects 0.000 claims abstract description 13
- 238000012937 correction Methods 0.000 claims description 6
- 239000013256 coordination polymer Substances 0.000 claims description 4
- 238000005316 response function Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0892—Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses the electromagnetic radiation measuring modification method under a kind of environment based on seanoise, comprise the following steps that:The resolution belt width values set according to spectrum analyzer, seanoise modifying factor is calculated with Bimodal Noise model;The signal power obtained by seanoise modifying factor and measurement, calculates signal power actual value;According to obtained signal power actual value, with reference to measurement antenna parameter, revised electromagnetic radiation intensity is calculated.The characteristics of present invention is by considering noise and Bimodal Noise model in spectrum analyzer internal noise, electromagnetic radiation measuring environment Multiple factors, the prediction of spectrum analyzer ground noise is modeled, the model set up can be accurately measured to electromagnetic radiation.This method measurement accurate to electromagnetic radiation, environmental protection and the healthy of people have great reference value, with good social benefit.
Description
Technical field
The present invention relates to the electromagnetic radiation measuring modification method under a kind of environment based on seanoise.
Background technology
From the operation principle of spectrum analyzer, noise is ubiquitous, the presence of noise among measurement process
Very important error is brought to electromagnetic radiation measuring result, it is therefore desirable to seek a kind of modification method to overcome noise to electromagnetism
The influence of actinometry.
More noise model is used now for Gaussian noise, and in marine environment, statistical property and the Gauss of noise make an uproar
Acoustic model, impulsive noise model have differences, and Bimodal Noise is the mixing being superimposed as by Gaussian noise and a kind of non-Gaussian noise
Noise model, is suitable for the noise characteristic under marine environment, so accurately to measure some equipment under seanoise environment
Electromagnetic radiation, need seek a kind of new modification method to reduce the influence of noise.
Modification method, document are measured for electromagnetic radiation intensity《Frequency spectrograph measures the application study of low level signal》(the Qin
Application study [J] electronic surveyings and instrument journal, 2009,23 (s1) along friend frequency spectrographs measurement low level signal:51-55.)
The method of the parameters such as the suitable spectrum analyzer rf attenuation of research equipment, resolution bandwidth and video bandwidth, improves and improves
Low level signal measurement accuracy, document《Accurate signal power measurement is carried out with frequency spectrograph》(Chen Feng are carried out accurately with frequency spectrograph
Signal power measurement [J] Electronic Design applications, 2009 (8):80-83.) mainly analysis spectrum analyzer is each from principle
The influence of kind of parameter setting and how correct arrange parameter, so as to obtain accurate signal power measurements, above-mentioned document
The setting of parameter during the measurement electromagnetic radiation of Main Analysis spectrum analyzer, but do not provide specific modification method.
The content of the invention
For the deficiencies in the prior art, the invention provides the electromagnetic radiation under a kind of environment based on seanoise
Modification method is measured, this method accurately calculates seanoise modifying factor by Bimodal Noise model, realizes seanoise
Electromagnetic radiation is accurately measured under environment.
Technical proposal that the invention solves the above-mentioned problems comprises the following steps:
Step 1) the resolution belt width values that are set according to spectrum analyzer, calculate seanoise with Bimodal Noise model and repair
Positive divisor;
Step 2) according to step 1) signal power that obtained seanoise modifying factor and measurement are obtained, calculate signal
Power actual value;
Step 3) according to step 2) obtained signal power actual value, with reference to measurement antenna parameter, calculate revised
Electromagnetic radiation intensity.
The step 1) in, the resolution belt width values set according to spectrum analyzer are calculated with Bimodal Noise model and gone to sea
The foreign noise correction factor, the expression formula of seanoise modifying factor is:
Wherein, CpSeanoise modifying factor is represented, unit is dBm, and B determines the amplitude of vibration item, σ2Represent Gaussian component
Variance, RBW represents spectrum analyzer intermediate-frequency filter resolution bandwidth, and unit is KHz,Represent that Bimodal Noise is put down
Equal power,Function representation spectrum analyzer unit impulse response function.
The step 2) in, according to step 1) signal power that obtained ocean modifying factor and measurement are obtained, calculate
Signal power actual value, signal power actual value is:
Wherein, S represents signal power actual value, and unit is dBm, SNMeasured signal power value is represented, unit is dBm, CPTable
Show signal power correction value, unit is dBm.
The step 3) in, according to step 2) obtained signal power actual value, with reference to measurement antenna parameter, calculate
Revised electromagnetic radiation intensity, the electromagnetic radiation intensity after amendment is:
Wherein, what e was represented is the electromagnetic radiation intensity after correcting, and unit is V/m, and S represents signal power actual value, single
Position is dBm, and what AF was represented is antenna factor, and unit is dB/m, ARFWhat is represented is cable loss, and unit is dB, and Z represents radio frequency electrical
Cable impedance, unit is Ω.
The beneficial effects of the invention are as follows:
Under seanoise environment, noise influences very big to electromagnetic radiation measuring value, and there is presently no a kind of effective
Solution improves the electromagnetic radiation measuring degree of accuracy, and patent of the present invention is considered makes an uproar in spectrum analyzer measurement electromagnetic radiation environment
The characteristics of sound, modifying factor, this method pair are directly calculated with the impulse response function of Bimodal Noise model and spectrum analyzer
Electromagnetic radiation is accurately measured, environmental protection and the healthy of people have great reference value, with good social benefit.
Brief description of the drawings
Fig. 1 is flow chart of the invention.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.The present embodiment is with this hair
It is lower premised on bright content to carry out, detailed implementation steps are given, but the protection domain of invention is not limited to following embodiments.
Sample plot point selection of the present invention is in marine environment, and objective for implementation is domestic general WCDMA signals of communication, in experiment
Major experimental instrument is An Nuoni reception antennas HyperLOG60180 and spectrum analyzer AT6030D, WCDMA centre frequency
And spectrum analyzer parameter setting is as shown in table 1.
The spectrum analyzer parameter setting of table 1
Electromagnetic radiation measuring modification method under a kind of environment based on seanoise of the present invention, comprises the following steps:
Step 1) the resolution belt width values that are set according to spectrum analyzer, calculate seanoise with Bimodal Noise model and repair
Positive divisor;
Step 2) according to step 1) signal power that obtained seanoise modifying factor and measurement are obtained, calculate signal
Power actual value;
Step 3) according to step 2) obtained signal power actual value, with reference to measurement antenna parameter, calculate revised
Electromagnetic radiation intensity.
The step 1) in, the resolution belt width values set according to spectrum analyzer are calculated with Bimodal Noise model and gone to sea
The foreign noise correction factor, the expression formula of seanoise modifying factor is:
Wherein, CpSeanoise modifying factor is represented, unit is dBm, σ2Represent in the variance of Gaussian component, the present embodiment
For 0.042, it is 1.9 σ that B, which determines to vibrate in the amplitude of item, the present embodiment, and RBW represents intermediate-frequency filter resolution bandwidth, and unit is
It is 30KHz in KHz, the present embodiment,Bimodal Noise mean power is represented,Function representation frequency spectrum
The unit impulse response function of analyzer, according to parameter above, seanoise modifying factor is specifically calculated as follows:
The step 2) in, according to step 1) the obtained signal power of obtained seanoise modifying factor and measurement, meter
Signal power actual value is calculated, signal power actual value is:
Wherein, S represents signal power actual value, and unit is dBm, SNSignal measurement performance number is represented, unit is dBm, CPTable
Show signal power correction value, unit is dBm.
Pass through signal power measurement value S in the implementation caseNFor -27.66dBm, and step 1) calculate obtained signal
Power correction value CPFor -28.44dBm, then can obtain signal power actual value S is:
The step 3) in, according to step 2) obtained signal power actual value, with reference to measurement antenna parameter, calculate
Revised electromagnetic radiation intensity is:
Wherein, what e was represented is revised electromagnetic radiation intensity, and unit is V/m, and S represents actual signal power value, unit
It is -35.50dBm for dBm, in the present embodiment, AF represents antenna factor, it in dB/m, the present embodiment is 36.84dB/m that unit, which is,
ARFCable loss is represented, it is 3dB in dB, the present embodiment that unit, which is, Z represents radio-frequency cable impedance, during unit is Ω, the present embodiment
For 50 Ω, can calculate electromagnetic radiation intensity after amendment is:
The electromagnetic radiation measuring amendment under a kind of environment based on seanoise proposed by the present invention is can be seen that from data
Method is effective.
Claims (4)
1. the electromagnetic radiation measuring modification method under a kind of environment based on seanoise, it is characterised in that comprise the following steps:
Step 1) the resolution belt width values that are set according to spectrum analyzer, calculate seanoise modifying factor with Bimodal Noise model
Son;
Step 2) according to step 1) signal power that obtained seanoise modifying factor and measurement are obtained, calculate signal power
Actual value;
Step 3) according to step 2) obtained signal power actual value, with reference to measurement antenna parameter, calculate revised electromagnetism
Radiation intensity.
2. the electromagnetic radiation measuring modification method under a kind of environment based on seanoise according to claim 1, its feature
It is, in the step 1, the expression formula of seanoise modifying factor is:
<mrow>
<msub>
<mi>C</mi>
<mi>p</mi>
</msub>
<mo>=</mo>
<mrow>
<mo>(</mo>
<mfrac>
<msup>
<mi>B</mi>
<mn>2</mn>
</msup>
<mn>2</mn>
</mfrac>
<mo>+</mo>
<msup>
<mi>&sigma;</mi>
<mn>2</mn>
</msup>
<mo>)</mo>
</mrow>
<munderover>
<mo>&Integral;</mo>
<mrow>
<mo>-</mo>
<mi>&Delta;</mi>
<mi>f</mi>
<mo>/</mo>
<mn>2</mn>
</mrow>
<mrow>
<mo>+</mo>
<mi>&Delta;</mi>
<mi>f</mi>
<mo>/</mo>
<mn>2</mn>
</mrow>
</munderover>
<msup>
<mrow>
<mo>|</mo>
<mi>exp</mi>
<mrow>
<mo>(</mo>
<mo>-</mo>
<mn>2</mn>
<mi>l</mi>
<mi>n</mi>
<mn>2</mn>
<mo>&CenterDot;</mo>
<mfrac>
<msup>
<mi>f</mi>
<mn>2</mn>
</msup>
<mrow>
<msup>
<mi>RBW</mi>
<mn>2</mn>
</msup>
</mrow>
</mfrac>
<mo>)</mo>
</mrow>
<mo>|</mo>
</mrow>
<mn>2</mn>
</msup>
<mi>d</mi>
<mi>f</mi>
</mrow>
Wherein, CpSeanoise modifying factor is represented, unit is dBm, and B determines the amplitude of vibration item, σ2Represent the side of Gaussian component
Difference, RBW represents spectrum analyzer intermediate-frequency filter resolution bandwidth, and unit is KHz,Represent the average work(of Bimodal Noise
Rate,Represent spectrum analyzer unit impulse response function.
3. the electromagnetic radiation measuring modification method under a kind of environment based on seanoise according to claim 1, its feature
It is, in the step 2, signal power actual value is:
<mrow>
<mi>S</mi>
<mo>=</mo>
<mn>10</mn>
<mi>l</mi>
<mi>g</mi>
<mrow>
<mo>(</mo>
<msup>
<mn>10</mn>
<mfrac>
<msub>
<mi>S</mi>
<mi>N</mi>
</msub>
<mn>10</mn>
</mfrac>
</msup>
<mo>-</mo>
<msup>
<mn>10</mn>
<mfrac>
<msub>
<mi>C</mi>
<mi>P</mi>
</msub>
<mn>10</mn>
</mfrac>
</msup>
<mo>)</mo>
</mrow>
</mrow>
Wherein, S represents signal power actual value, and unit is dBm, SNMeasured signal power value is represented, unit is dBm, CPRepresent letter
Number power correction value, unit is dBm.
4. the electromagnetic radiation measuring modification method under a kind of environment based on seanoise according to claim 1, its feature
It is, in the step 3, revised electromagnetic radiation intensity is:
<mrow>
<mi>e</mi>
<mo>=</mo>
<msup>
<mn>10</mn>
<mrow>
<mo>&lsqb;</mo>
<mo>-</mo>
<mn>6</mn>
<mo>+</mo>
<mfrac>
<mrow>
<mn>20</mn>
<mi>l</mi>
<mi>g</mi>
<mrow>
<mo>(</mo>
<msqrt>
<mrow>
<msup>
<mn>10</mn>
<mrow>
<mo>(</mo>
<mo>-</mo>
<mn>3</mn>
<mo>+</mo>
<mi>S</mi>
<mo>/</mo>
<mn>10</mn>
<mo>)</mo>
</mrow>
</msup>
<mo>&CenterDot;</mo>
<mi>Z</mi>
</mrow>
</msqrt>
<mo>&CenterDot;</mo>
<msup>
<mn>10</mn>
<mn>6</mn>
</msup>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>A</mi>
<mi>F</mi>
<mo>+</mo>
<msub>
<mi>A</mi>
<mrow>
<mi>R</mi>
<mi>F</mi>
</mrow>
</msub>
</mrow>
<mn>20</mn>
</mfrac>
<mo>&rsqb;</mo>
</mrow>
</msup>
</mrow>
Wherein, e represents revised electromagnetic radiation intensity, and unit is V/m, and S represents signal power actual value, and unit is dBm, AF
Antenna factor is represented, unit is dB/m, ARFCable loss is represented, unit is dB, and Z represents radio-frequency cable impedance, and unit is Ω.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710466760.5A CN107255754B (en) | 2017-06-20 | 2017-06-20 | A kind of electromagnetic radiation measuring modification method under the environment based on seanoise |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710466760.5A CN107255754B (en) | 2017-06-20 | 2017-06-20 | A kind of electromagnetic radiation measuring modification method under the environment based on seanoise |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107255754A true CN107255754A (en) | 2017-10-17 |
CN107255754B CN107255754B (en) | 2019-07-30 |
Family
ID=60023828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710466760.5A Expired - Fee Related CN107255754B (en) | 2017-06-20 | 2017-06-20 | A kind of electromagnetic radiation measuring modification method under the environment based on seanoise |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107255754B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111198347A (en) * | 2020-01-08 | 2020-05-26 | 杭州电子科技大学 | Passive noise testing method for magnetic sensor |
CN114626402A (en) * | 2021-12-23 | 2022-06-14 | 云南民族大学 | Underwater acoustic signal denoising method and device based on sparse dictionary learning |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001295622A (en) * | 2000-04-18 | 2001-10-26 | Fuji Xerox Co Ltd | Active type muffler |
EP1935340A1 (en) * | 2006-12-19 | 2008-06-25 | Agfa HealthCare NV | Method for neutralizing image artifacts prior to the determination of the Signal-to-noise ratio in CR/DR radiography systems |
CN104198829A (en) * | 2014-09-09 | 2014-12-10 | 大连理工大学 | ARM temperature and humidity self-correction based electromagnetic radiation measuring device and measuring method |
CN205643531U (en) * | 2016-05-13 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Electromagnetic radiation test system |
CN106771668A (en) * | 2017-01-05 | 2017-05-31 | 西南交通大学 | A kind of electromagnetic radiation parameter test system |
-
2017
- 2017-06-20 CN CN201710466760.5A patent/CN107255754B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001295622A (en) * | 2000-04-18 | 2001-10-26 | Fuji Xerox Co Ltd | Active type muffler |
EP1935340A1 (en) * | 2006-12-19 | 2008-06-25 | Agfa HealthCare NV | Method for neutralizing image artifacts prior to the determination of the Signal-to-noise ratio in CR/DR radiography systems |
CN104198829A (en) * | 2014-09-09 | 2014-12-10 | 大连理工大学 | ARM temperature and humidity self-correction based electromagnetic radiation measuring device and measuring method |
CN205643531U (en) * | 2016-05-13 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Electromagnetic radiation test system |
CN106771668A (en) * | 2017-01-05 | 2017-05-31 | 西南交通大学 | A kind of electromagnetic radiation parameter test system |
Non-Patent Citations (4)
Title |
---|
杨三明 等: "关于噪声监测修正值的探讨", 《全国环境声学电磁辐射环境学术会议论文集》 * |
林君 等: "强电磁干扰下磁共振地下水探测噪声压制方法研究进展", 《吉林大学学报(地球科学版)》 * |
铁广朋 等: "两种非高斯海洋环境噪声统计模型分析", 《声学技术》 * |
韩立松: "采用频谱仪进行电磁辐射测量", 《中国无线电》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111198347A (en) * | 2020-01-08 | 2020-05-26 | 杭州电子科技大学 | Passive noise testing method for magnetic sensor |
CN114626402A (en) * | 2021-12-23 | 2022-06-14 | 云南民族大学 | Underwater acoustic signal denoising method and device based on sparse dictionary learning |
Also Published As
Publication number | Publication date |
---|---|
CN107255754B (en) | 2019-07-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104931797B (en) | The measuring method of lossy medium dielectric constant based on wave transparent mechanism | |
CN108037496A (en) | A kind of free field hydrophone plural number sensitivity accurate measurement method | |
CN110058084B (en) | Harmonic impedance measurement system and method of converter transformer | |
CN109962732A (en) | A kind of high-speed digital transmission Baseband Testing equipment Alignment device and method | |
CN110672932B (en) | Automatic calibration method for multi-antenna navigation darkroom test signal level | |
Shen et al. | Fast and accurate TIS testing method for wireless user equipment with RSS reporting | |
CN113092915B (en) | Method for rapidly deducing electromagnetic environment adaptability boundary scene of radio frequency equipment | |
CN107255754B (en) | A kind of electromagnetic radiation measuring modification method under the environment based on seanoise | |
CN103235194A (en) | Method for measuring circular polarization antenna axial ratio by utilizing linear polarization antenna | |
CN107167670B (en) | A kind of electromagnetic radiation measuring modification method based under impulse noise environment | |
CN107167669B (en) | A kind of electromagnetic radiation measuring modification method under the environment based on white Gaussian noise | |
CN104198834B (en) | vehicle electromagnetic compatibility assessment method | |
CN105652254A (en) | Outdoor field RCS measurement method and system | |
CN103544376B (en) | Shortwave fixed monitoring station direction finding data correcting method | |
CN108020740A (en) | A kind of equipment region electromagnetic interference detection identifying system and method | |
CN113644997B (en) | Electromagnetic environment detection method, device and system | |
CN112763796B (en) | Method for measuring LFM carrier frequency with high precision | |
CN103048574B (en) | A kind of gtem cell radiation EMI method of testing based on radiation source feature | |
CN108051652A (en) | The method that cavity body filter accurately measures quality factor | |
Chen et al. | Intercomparisons of Site VSWR Measurement Methods using Mode Filtering, Time Domain and Spatial Sampling Techniques | |
CN202094903U (en) | Calibrating device for digital mobile communication comprehensive tester | |
CN111310311A (en) | Precise shaping design method and system for base station antenna | |
Jin et al. | Fast and accurate near-field calibration method for phased array antennas | |
CN114122708B (en) | Design method of low-frequency magnetic receiving antenna | |
CN113777412B (en) | Method for improving antenna pattern zero depth position test precision |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190730 |
|
CF01 | Termination of patent right due to non-payment of annual fee |