CN109239467A - It is a kind of towards multiposition, the satellite capsule plate electromagnetic leakage detection device of wide-band and method - Google Patents
It is a kind of towards multiposition, the satellite capsule plate electromagnetic leakage detection device of wide-band and method Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- 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
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Abstract
It is a kind of towards multiposition, the satellite capsule plate electromagnetic leakage detection device of wide-band and method, near field electric field probe is arranged in each position of opening of satellite capsule plate, acquires the electric field of the electromagnetic leakage of each position of opening, send to spectrum analyzer；Spectrum analyzer is directed to each radio frequency band of satellite, and maximum power value of the electromagnetic leakage in each radio frequency band and the total power value in each radio frequency band for testing each position of opening are sent to control computer；Control maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band, carry out data analysis, and according to data analysis result, electromagnetic leakage point detection ordering next time is planned, the present invention comprehensively considers in wider working frequency range that there are when the electromagnetic interference of multiple frequencies, the detection ordering for planning multiple electromagnetic interference leakage points improves testing efficiency and test specific aim.The present invention replaces definite value for test amplitude with fuzzy number simultaneously, improves the precision of test method.
Description
Technical field
The present invention relates to a kind of towards multiposition, the satellite capsule plate electromagnetic leakage detection device of wide-band and method, for
Satellite is on multiple positions, and existing electromagnetic interference leakage carries out detection position planning method and device in wide-band, belongs to
Leak detection technology field.
Background technique
With the development of satellite technology, the equipment applied on satellite at present is more and more, while for electromagnetism frequency on satellite
The utilization of spectrum is also more and more wider.The development and progress of the above-mentioned technology of satellite brings two problems for the Electro Magnetic Compatibility of satellite:
One is satellite is broadcast TV programs by satellite, the complexity of interior equipment and star external equipment makes also more and more to contact the cable of the two and pipeline etc.,
This causes star catalogue aperture and penetrating cable, pipeline to become more, can reduce the electromagnet shield effect of satellite health.The second is satellite operation
Frequency band broadens, and increases the probability that radio-frequency apparatus is interfered by installation electromagneticals other on satellite.
Satellite, for the satellite of electromagnetic environment complexity, is intended to Satellite during System Level Electromagnetic Compatibility is tested
The electromagnetic leakage in body surface face is detected, for there are the location points of electromagnetic leakage to carry out further shielding processing.Traditional
Detection method is mainly the method for using tester's hand-hold near-field probe to be tested in each position of satellite surface, after test
After carrying out shielding processing for the biggish point in electromagnetic interference leak position, test confirmation is carried out again.This test method is main
There are probelem in two aspects: first point is that this method has very big randomness, testing efficiency to the selected element of test position
Lower, especially when test position is more, the selection of test position lacks necessary foundation；Second point works as satellite application
Radio frequency band is wider, there are when multiple electromagnetic interferences in wider frequency range, how to integrate and examines in multiple electromagnetic interference frequencies
Considering selection electromagnetic leakage point is not yet to consider the problems of；It is thirdly that the general error of near-field detection method is larger, by electromagnetic interference
Time-varying characteristics and each test position error influence, electromagnetic interference leak amplitude variability and repeatedly test between difference
It is not generally large, biggish test error can be brought in the test data analysis method of traditional " exact value ".Simultaneously as electric
The complexity of magnetic disturbance, often some frequency or the electromagnetic interference of some position are smaller in current state amplitude, but work as to reduce
Electromagnetic interference on other Frequency points or in other positions and after being rectified and improved, the electromagnetic interference strength of the frequency or the position is anti-
And it will increase.
Summary of the invention
Present invention solves the technical problem that are as follows: it overcomes the shortage of prior art, provides and a kind of defended towards multiposition, wide-band
Star deck board electromagnetic leakage detection device and method, first for there are the radio frequency operation frequency range of multiple electromagnetic interference leakage points is wider
Satellite, to satellite capsule plate electromagnetic interference leakage point detection the position method and test device planned, comprehensively consider compared with
There are when the electromagnetic interference of multiple frequencies in wide working frequency range, plans the detection ordering of multiple electromagnetic interference leakage points, improve
Testing efficiency and test specific aim.Second comprehensively considers the maximum value of electromagnetic interference leakage and in the total of detection frequency range electromagnetic leakage
Performance number realizes the integrated treatment to wider frequency section electromagnetic leakage.Third is of the invention simultaneously for testing amplitude with fuzzy number generation
For definite value, the precision of test method is improved.
A kind of technical solution that the present invention solves are as follows: satellite capsule plate electromagnetic leakage detection dress towards multiposition, wide-band
It sets, characterized by comprising: control computer, spectrum analyzer and near field electric field probe；
Near field electric field probe is arranged in each position of opening of satellite capsule plate, acquires the electromagnetic leakage of each position of opening
Electric field is sent to spectrum analyzer；Spectrum analyzer is directed to each radio frequency band of satellite, and the electromagnetism for testing each position of opening is let out
The maximum power value in each radio frequency band and the total power value in each radio frequency band are leaked, is sent to control computer；
Maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled, is carried out
Data analysis, and according to data analysis result, electromagnetic leakage point detection ordering next time is planned.
Maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled, is carried out
Data analysis, and according to data analysis result, electromagnetic leakage point detection ordering next time is planned, specific as follows:
Step 1: the maximum power value to each radio frequency band and the total power value progress data mould in each radio frequency band
Gelatinization processing；
In each radio frequency band, the total power value of the maximum power value leaked according to electromagnetic interference and electromagnetic interference leakage,
The determining difference with the limit value of preset electromagnetic leakage；
Taking for maximum power domain and general power domain is determined according to the difference of the difference of maximum power and general power respectively
It is worth range；The difference of the difference of maximum power and general power is converted to the fuzzy subset of maximum power and the mould of general power respectively
It pastes subset and the subordinating degree function of maximum power and the person in servitude of general power is established according to the value range of respective domain and fuzzy subset
Category degree function；
Step 2: according to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, point
Do not obtain needing fuzzy data input and the total work of the i.e. maximum power of subordinating degree function of the maximum power of all frequency ranges detected
Subordinating degree function, that is, general power fuzzy data of rate inputs；
Step 3: according to the degree of membership letter of the subordinating degree function of the maximum power for all frequency ranges to be detected and general power
Number, establishes fuzzy inference rule.
Step 4: being inputted according to the fuzzy data of the input of the fuzzy data of maximum power and general power, using fuzzy reasoning
Rule carries out data fusion, forms fuzzy set, the subordinating degree function of fuzzy set is defined as:
Wherein, μcIndicate the subordinating degree function of fuzzy set；Indicate synthesis operation；PinIndicate fuzzy data input；{ R } table
Show fuzzy inference rule.
Step 5: dimension-reduction treatment is carried out to fuzzy set, it is specific as follows
For each radio frequency band that needs detect, dimension-reduction treatment is carried out by following formula, the degree of membership letter after obtaining dimensionality reduction
Number:
Wherein, N indicates band number；fiIndicate i-th of frequency range；μlUnified letter indicates the subordinating degree function after dimensionality reduction.
Step 6: sharpening function is established, by the subordinating degree function after the fuzzy set of step 4 and step 5 dimension-reduction treatment
The input of sharpening function as foundation, the output of sharpening function are influence of the electromagnetic leakage to whole star Electro Magnetic Compatibility
Weight.
Step 7: sequence descending for the weighing factor of each aperture, as electromagnetic leakage inspection planning next time
Sequentially.
Step 1: the maximum power value to each radio frequency band and the total power value progress data mould in each radio frequency band
Gelatinization processing, specific as follows:
In each radio frequency band, the maximum power value for the electromagnetic leakage that will test and the electromagnetic leakage in the radio frequency band
Total power value made the difference respectively with electromagnetic leakage limit value, by the specific value of obtained difference, be based on domain value range, conversion
For fuzzy number.
The limit value of preset electromagnetic leakage, specifically: electromagnetic leakage limit value is that corresponding frequency band satellite RF receives system
The sensitivity of system.
According to the total power value of the maximum power value of electromagnetic interference leakage and electromagnetic interference leakage, it is determining with it is preset
The difference of the limit value of electromagnetic leakage, specific as follows:
Difference includes two parts: one is detecting that electromagnetic leakage power maximum value subtracts electromagnetic leakage limit value；The second is
The electromagnetic leakage total power value detected subtracts electromagnetic leakage limit value.
The value range of electric field domain and power domain is determined according to the difference of the difference of maximum power and general power, specifically
As follows: the value of domain is [- satellite Electro Magnetic Compatibility safety margin ,+satellite Electro Magnetic Compatibility safety margin].
The difference of the difference of maximum power and general power is converted to fuzzy subset and the general power of maximum power respectively
Fuzzy subset, specific as follows:
According to domain range, value of the difference of the difference of maximum power and general power within the scope of domain is determined fuzzy
Subset { NB, NM, NS, Z, PS, PM, PB }.
Wherein, NB, NM, NS, Z, PS, PM and PB respectively indicate in negative big, negative, bear it is small, zero, it is just small, just neutralizing it is honest.
According to the value range of respective domain and fuzzy subset, the subordinating degree function of maximum power and the person in servitude of general power are established
Category degree function, specially subordinating degree function are triangle subordinating degree function.
According to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, respectively obtaining is needed
The fuzzy data input of the i.e. maximum power of the subordinating degree function of the maximum power for all frequency ranges to be detected and being subordinate to for general power
The input of function, that is, general power fuzzy data is spent, specific as follows:
Wherein, μ indicates the subordinating degree function value of single frequency range；P indicates input value；M indicates band number；F indicates frequency range, Pin
Expression comprehensively considers the subordinating degree function value after three frequency ranges.
According to the subordinating degree function of the subordinating degree function of the maximum power for all frequency ranges to be detected and general power, mould is established
Inference rule is pasted, specific as follows:
Wherein, NB, NM, NS, Z, PS, PM and PB respectively indicate in negative big, negative, bear it is small, zero, it is just small, just neutralizing it is honest.
It is inputted according to the fuzzy data of the input of the fuzzy data of maximum power and general power, using fuzzy inference rule, into
Row data fusion forms fuzzy set, specific as follows:
Wherein, μcIndicate the subordinating degree function of fuzzy set；Indicate synthesis operation；PinIndicate fuzzy data input；{ R } table
Show fuzzy inference rule.
Step 5 carries out dimension-reduction treatment to fuzzy set, specific as follows
For each radio frequency band that needs detect, dimension-reduction treatment is carried out by following formula, the degree of membership letter after obtaining dimensionality reduction
Number:
Wherein, N indicates band number；fiIndicate i-th of frequency range；μlUnified letter indicates the subordinating degree function after dimensionality reduction.
Sharpening function is established, using the subordinating degree function after step 5 dimension-reduction treatment as the defeated of the sharpening function established
Entering, the output of sharpening function is weighing factor of the electromagnetic leakage to whole star Electro Magnetic Compatibility, specific as follows:
Sharpening function is S type function, and the input of sharpening function is the subordinating degree function after dimensionality reduction, is exported as electromagnetic leakage
To the weighing factor of whole star Electro Magnetic Compatibility.
As shown in figure 3, a kind of satellite capsule plate electromagnetic leakage detection method towards multiposition, wide-band, steps are as follows:
(1) near field electric field probe is arranged in each position of opening of satellite capsule plate, acquires the electromagnetism of each position of opening
Leakage, send to spectrum analyzer；
(2) spectrum analyzer is directed to each radio frequency band of satellite, tests the electromagnetic leakage of each position of opening each
The maximum power value of radio frequency band and total power value in each radio frequency band are sent to control computer；
(3) maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled,
Data analysis is carried out, steps are as follows:
Step (3) controls maximum power value of the computer according to each radio frequency band and the general power in each radio frequency band
Value carries out data analysis, specific as follows:
Step 1: the maximum power value to each radio frequency band and the total power value progress data mould in each radio frequency band
Gelatinization processing；
In each radio frequency band, the total power value of the maximum power value leaked according to electromagnetic interference and electromagnetic interference leakage,
The determining difference with the limit value of preset electromagnetic leakage；
Taking for maximum power domain and general power domain is determined according to the difference of the difference of maximum power and general power respectively
It is worth range；The difference of the difference of maximum power and general power is converted to the fuzzy subset of maximum power and the mould of general power respectively
It pastes subset and the subordinating degree function of maximum power and the person in servitude of general power is established according to the value range of respective domain and fuzzy subset
Category degree function；
Step 2: according to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, point
Do not obtain needing fuzzy data input and the total work of the i.e. maximum power of subordinating degree function of the maximum power of all frequency ranges detected
Subordinating degree function, that is, general power fuzzy data of rate inputs；
Step 3: according to the degree of membership letter of the subordinating degree function of the maximum power for all frequency ranges to be detected and general power
Number, establishes fuzzy inference rule.
Step 4: inputted according to the fuzzy data of the input of the fuzzy data of electric field and power, using fuzzy inference rule, into
Row data fusion forms fuzzy set, is defined as:
Wherein, μcIndicate the subordinating degree function of fuzzy set；Indicate synthesis operation；PinIndicate fuzzy data input；{ R } table
Show fuzzy inference rule.
Step 5: dimension-reduction treatment is carried out to fuzzy set, it is specific as follows
For each radio frequency band that needs detect, dimension-reduction treatment is carried out by following formula, the degree of membership letter after obtaining dimensionality reduction
Number:
Wherein, N indicates band number；fiIndicate i-th of frequency range；μlUnified letter indicates the subordinating degree function after dimensionality reduction.
Step 6: sharpening function is established, by the subordinating degree function after the fuzzy set of step 4 and step 5 dimension-reduction treatment
The input of sharpening function as foundation, the output of sharpening function are influence of the electromagnetic leakage to whole star Electro Magnetic Compatibility
Weight.
Step 7: sequence descending for the weighing factor of each aperture, as electromagnetic leakage inspection planning next time
Sequentially.
The advantages of the present invention over the prior art are that:
(1) present invention can plan solve conventional test methodologies to the multiple electromagnetic interference leakage points of satellite surface
Random problem, can effectively improve testing efficiency.
(2) present invention has comprehensively considered existing multiple frequencies in wider frequency section in electromagnetic interference leakage point test process
The problem of rate electromagnetic interference, solves conventional test methodologies and is based only upon what the interference of the wherein Frequency point of amplitude maximum was referred to
Problem improves the comprehensive of test.
(3) present invention considers the influence of the randomness and test position error of electromagnetic interference, is replaced with fuzzy number single
It determines value, improves the accuracy of test.
(4) present invention considers the influence of other frequency ranges when establishing to each frequency range subordinating degree function, can make full use of electricity
The coupling information of magnetic dispersion so that subordinating degree function establish it is more acurrate.
(5) present invention establishes fuzzy inference rule after comprehensively considering electromagnetic leakage power maximum value and total power value, by two
Comprehensive a consideration element is an element, realizes data fusion, and reduce difficulty in computation.
Detailed description of the invention
Fig. 1 is the exemplary input quantity subordinating degree function schematic diagram of the present invention；
Fig. 2 is clear data function schematic diagram of the invention；
Fig. 3 is method implementation flow chart of the invention.
Specific embodiment
The invention will be described in further detail in the following with reference to the drawings and specific embodiments.
The present invention is a kind of towards multiposition, the satellite capsule plate electromagnetic leakage detection device of wide-band and method, near field electric field
Probe arrangement acquires the electric field of the electromagnetic leakage of each position of opening in each position of opening of satellite capsule plate, send to frequency spectrum point
Analyzer；Spectrum analyzer is directed to each radio frequency band of satellite, tests the electromagnetic leakage of each position of opening in each radio frequency frequency
The maximum power value and total power value in each radio frequency band of section are sent to control computer；Control computer is according to each penetrating
The maximum power value of frequent section and total power value in each radio frequency band, carry out data analysis, and according to data analysis result,
Electromagnetic leakage point detection ordering next time is planned, the present invention comprehensively considers in wider working frequency range that there are multiple frequencies
When the electromagnetic interference of rate, the detection ordering of multiple electromagnetic interference leakage points is planned, improve testing efficiency and test specific aim.Together
When the present invention for test amplitude with fuzzy number replace definite value, improve the precision of test method.
The present invention is detected applied to satellite capsule plate electromagnetic leakage, provides a kind of satellite capsule plate towards multiposition, wide-band
Electromagnetic leakage detection device and method.A kind of satellite capsule plate electromagnetic leakage towards multiposition, wide-band of the invention detects dress
Setting includes: control computer, spectrum analyzer and near field electric field probe；
Near field electric field probe is arranged in each position of opening of satellite capsule plate, and satellite capsule plate mainly includes to floor, privately
Plate, eastern plate, western plate, southern plate and northern plate.The electric field for acquiring the electromagnetic leakage of the position of opening in each deck board is sent to spectrum analysis
Instrument；Spectrum analyzer is directed to each radio frequency band of satellite, tests the electromagnetic leakage of each position of opening in each radio frequency band
Maximum power value and total power value in each radio frequency band, send to control computer；
Maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled, it will be electric
The maximum power value and total power value of magnetic dispersion do Fuzzy Processing and operation, show that the electromagnetic interference of each aperture is leaked to satellite
The weighing factor of Electro Magnetic Compatibility, and sequence from big to small is done to weighing factor, that is, determine electromagnetic leakage point inspection next time
Survey sequence.
Maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled, it will be electric
The maximum power value and total power value of magnetic dispersion do Fuzzy Processing and operation, show that the electromagnetic interference of each aperture is leaked to satellite
The weighing factor of Electro Magnetic Compatibility, and sequence from big to small is done to weighing factor, that is, determine electromagnetic leakage point inspection next time
Survey sequence, specific as follows:
Step 1: the maximum power value to each radio frequency band and the total power value progress data mould in each radio frequency band
Gelatinization is handled, in detailed process:
The limit value of preset electromagnetic leakage, electromagnetic leakage limit value are that corresponding frequency band satellite RF receives the sensitive of system
Degree.
In each radio frequency band, the total power value of the maximum power value leaked according to electromagnetic interference and electromagnetic interference leakage,
The determining difference with the limit value of preset electromagnetic leakage, difference includes two parts: one is detecting electromagnetic leakage power
Maximum value subtracts electromagnetic leakage limit value；The second is the electromagnetic leakage total power value detected subtracts electromagnetic leakage limit value.
The value for determining domain is [- satellite Electro Magnetic Compatibility safety margin ,+satellite Electro Magnetic Compatibility safety margin].
According to domain range, value of the difference of the difference of maximum power and general power within the scope of domain is determined fuzzy
Subset { NB, NM, NS, Z, PS, PM, PB }.Wherein, NB, NM, NS, Z, PS, PM and PB respectively indicate in negative big, negative, bear it is small, zero,
It is just small, just neutralizing it is honest.
Using triangle subordinating degree function, subordinating degree function as shown in Figure 1 is established.
Consider electromagnetic leakage during, other than the maximum value to electromagnetic leakage carries out data analysis, it is also contemplated that electricity
The total power value of magnetic dispersion solves conventional test methodologies and is based only upon what the interference of the wherein Frequency point of amplitude maximum was referred to
Problem improves the comprehensive of test.Meanwhile by using fuzzy number replace it is single it is determining be worth, reduce electromagnetic interference with
The influence of machine and test position error improves the accuracy of test.
Step 2: according to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, point
Do not obtain needing fuzzy data input and the total work of the i.e. maximum power of subordinating degree function of the maximum power of all frequency ranges detected
Subordinating degree function, that is, general power fuzzy data of rate inputs, and calculated and is known as:
Wherein, μ indicates the subordinating degree function value of single frequency range；P indicates input value；M indicates band number；F indicates frequency range, Pin
Expression comprehensively considers the subordinating degree function value after three frequency ranges.
The influence that other frequency ranges are considered when establishing to each frequency range subordinating degree function, can make full use of the coupling of electromagnetic leakage
Close information so that subordinating degree function establish it is more acurrate.
Step 3: according to the degree of membership letter of the subordinating degree function of the maximum power for all frequency ranges to be detected and general power
Number, establishes fuzzy inference rule.It is specific as follows:
Wherein, NB, NM, NS, Z, PS, PM and PB respectively indicate in negative big, negative, bear it is small, zero, it is just small, just neutralizing it is honest.
In fuzzy thrust rule establishment process, mould is established after comprehensively considering electromagnetic leakage power maximum value and total power value
Inference rule is pasted, is an element by two consideration elements synthesis, realizes data fusion, and reduce difficulty in computation.
Step 4: being inputted according to the fuzzy data of the input of the fuzzy data of maximum power and general power, using fuzzy reasoning
Rule carries out data fusion, forms fuzzy set subordinating degree function, fusion process are as follows:
Wherein, μcIndicate the subordinating degree function of fuzzy set；Indicate synthesis operation；PinIndicate fuzzy data input；{ R } table
Show fuzzy inference rule.
Step 5: dimension-reduction treatment is carried out to fuzzy set, it is specific as follows
For each radio frequency band that needs detect, dimension-reduction treatment is carried out by following formula, the degree of membership letter after obtaining dimensionality reduction
Number:
Wherein, N indicates band number；fiIndicate i-th of frequency range；μlUnified letter indicates the subordinating degree function after dimensionality reduction.
Step 6: sharpening function is established, by the subordinating degree function after the fuzzy set of step 4 and step 5 dimension-reduction treatment
The input of sharpening function as foundation, the output of sharpening function are influence of the electromagnetic leakage to whole star Electro Magnetic Compatibility
Weight.
Sharpening function is S type function, as shown in Fig. 2, the input of sharpening function is the subordinating degree function after dimensionality reduction, output
It is electromagnetic leakage to the weighing factor of whole star Electro Magnetic Compatibility.
Step 7: sequence descending for the weighing factor of each aperture, as electromagnetic leakage inspection planning next time
Sequentially.
It can plan solve conventional test methodologies to the multiple electromagnetic interference leakage points of satellite surface by this method
Random problem, can effectively improve testing efficiency.
Certain satellite is there are three radio frequency band, preferably 500~600MHz, 2.2~2.3GHz and 3~3.1GHz.It tested
Cheng Weixing, with the presence of 6 aperture electromagnetic interference leakages, influences three radio frequency bands of satellite to ground deck board.It needs to 6 apertures
Electromagnetic leakage carry out detection and rectification processing.To improve testing efficiency and test accuracy, need to plan the test of 6 positions
Sequentially.Electricity of the electromagnetic leakage in each frequency range of 6 position of opening is tested using spectrum analyzer and near field electric field probe first
Magnetic disturbance leakage power maximum value and general power maximum value in each frequency range.Control computer is entered data into, is being controlled
Carry out in computer data analyze to obtain each position of opening it is as shown in the table to satellite Electro Magnetic Compatibility weighing factor:
| Aperture | 1 | 2 | 3 | 4 | 5 | 6 |
| Weighing factor | 0.19 | 0.35 | 0.16 | 0.05 | 0.06 | 0.17 |
Shielding processing is carried out to above-mentioned 6 apertures, electromagnetic interference leak detection sequence next time is determined by weighing factor
Are as follows: 5 → aperture of aperture 2 → aperture, 1 → aperture, 6 → aperture, 3 → aperture 4.
Eventually by shielding processing three times and monitoring, solve to floor openings leakage electromagnetic interference influence satellite RF frequency
The problem of section.
As can be seen that method of the invention can effectively instruct electromagnetic interference leak detection sequence, electromagnetic interference ensure that
The processing of leak detection it is targeted, improve testing efficiency.
Certain satellite RF reception bandwidth has a 2.5GHz, and satellite is to floor, privately on plate, eastern plate, western plate, southern plate and northern plate
Have more than 30 apertures.For influence of the electromagnetic interference to radio frequency reception of determination each aperture leakage, need to carry out aperture leakage electricity
Magnetic disturbance detection and shielding processing.After each shielding processing, detection satellite RF receives whether band is interior has interference signal, such as crosses still
There is interference to need to do each aperture leakage electromagnetic interference progress again detection and shielding processing with interior nothing until satellite RF is received
Until disturbing signal.
During the Alpha test of the model, handled using traditional detection localization method, above-mentioned treatment process is about
For 120h.In second stage test process, handled using detection localization method of the invention, above-mentioned treatment process is about 65h.
Saving of time is more than 45%, and realizes satellite RF and receive with interior glitch-free technical requirement.Prove the method for the present invention
Validity and testing efficiency can be effectively improved.
A kind of satellite capsule plate electromagnetic leakage inspection planning method and apparatus towards multiposition, wide-band of the invention.Institute
The device stated preferably includes a control computer, a spectrum analyzer and a secondary near field electric field probe.There are three certain satellites
Radio frequency band, respectively 500~600MHz, 2.2~2.3GHz and 3~3.1GHz.Test process satellite capsule plate has 6 on one side
There are electromagnetic interference leakages for aperture, influence three radio frequency bands of satellite.It needs to carry out the electromagnetic leakage of 6 apertures to detect and whole
Changed handling.To improve testing efficiency and test accuracy, need to plan the testing sequence of 6 positions.Spectrum analysis is used first
Maximum value of the electromagnetic leakage in each frequency range and the energy in each frequency range that instrument and near field electric field probe test 6 position of opening
Maximum value.Control computer is entered data into, data analysis and electromagnetic leakage point next time are carried out in control computer
Detection ordering planning.
It mainly comprises the steps that
Step 1: carrying out data obfuscation processing.In each frequency range, consider that the maximum value of electromagnetic interference leakage and electromagnetism are dry
The total energy value for disturbing leakage is more than the decibel value of limit value requirement respectively.Establishing domain value range is [- 6,6].It will currently test
As a result it is blurred, determines fuzzy subset { NB, NM, NS, Z, PS, PM, PB }, establish subordinating degree function.
Step 2: determining fuzzy data input.Respectively in each position of opening, the degree of membership letter of three frequency ranges is comprehensively considered
Numerical value determines that fuzzy data inputs are as follows:
Wherein, μ indicates the subordinating degree function value of single frequency range；P indicates input value；F indicates frequency range, PinExpression comprehensively considers
Subordinating degree function value after three frequency ranges.
Step 3: fuzzy inference rule is established, it is as shown in the table:
Step 4: carrying out information fusion based on Indistinct Input and fuzzy inference rule, fuzzy set is formed.Using minimax
Value method obtains subordinating degree function are as follows:
μc={ sup [μ1(p1,f1)]}*…*{sup[μ2(p2,f3)]}
Step 5: carrying out dimension-reduction treatment.For three frequency ranges assessed, dimension-reduction treatment is carried out by following formula:
Step 6: being determined by sharpening function curve influences based on the subordinating degree function after fuzzy set and dimension-reduction treatment
Weight.
Step 7: repeating the above process for other apertures, the weight of each position is determined, it is descending by weight size
Sequence, as next step electromagnetic leakage inspection planning sequence.
The present invention can plan that it is random to solve conventional test methodologies to the multiple electromagnetic interference leakage points of satellite surface
The problem of property, testing efficiency can be effectively improved；In electromagnetic interference leakage point test process, wider frequency section memory has been comprehensively considered
Multiple frequency electromagnetics interference the problem of, solve the interference that conventional test methodologies are based only upon the wherein Frequency point of amplitude maximum
The problem of being referred to improves the comprehensive of test.
The present invention considers the influence of the randomness and test position error of electromagnetic interference, replaces single determination with fuzzy number
Value, improves the accuracy of test；The influence of other frequency ranges is considered when establishing to each frequency range subordinating degree function, it can be sufficiently sharp
With the coupling information of electromagnetic leakage so that subordinating degree function establish it is more acurrate；And comprehensively consider electromagnetic leakage power maximum value
With fuzzy inference rule is established after total power value, by two consideration elements it is comprehensive be an element, realize data fusion, and drop
Low difficulty in computation.
Claims (11)
1. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band, characterized by comprising: control calculates
Machine, spectrum analyzer and near field electric field probe；
Near field electric field probe is arranged in each position of opening of satellite capsule plate, acquires the electricity of the electromagnetic leakage of each position of opening
, it send to spectrum analyzer；Spectrum analyzer is directed to each radio frequency band of satellite, tests the electromagnetic leakage of each position of opening
Maximum power value in each radio frequency band and the total power value in each radio frequency band are sent to control computer；
Maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled, data are carried out
Analysis is obtained according to data analysis result, and according to data analysis result, is planned electromagnetic leakage point detection ordering.
2. according to claim 1 a kind of towards multiposition, the satellite capsule plate electromagnetic leakage detection device of wide-band and side
Method, it is characterised in that: control maximum power value of the computer according to each radio frequency band and the general power in each radio frequency band
Value carries out data analysis, and according to data analysis result, plans electromagnetic leakage point detection ordering next time, specifically
It is as follows:
Step 1: the maximum power value to each radio frequency band and the total power value progress data obfuscation in each radio frequency band
Processing is determined in each radio frequency band according to the total power value of the maximum power value of electromagnetic interference leakage and electromagnetic interference leakage
With the difference of the limit value of preset electromagnetic leakage；
The value model of maximum power domain and general power domain is determined according to the difference of the difference of maximum power and general power respectively
It encloses；The difference of the difference of maximum power and general power is converted to the fuzzy subset of maximum power and the fuzzy son of general power respectively
Collection, according to the value range of respective domain and fuzzy subset, establishes the subordinating degree function of maximum power and the degree of membership of general power
Function；
Step 2: according to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, respectively
To the fuzzy data input and general power of the i.e. maximum power of subordinating degree function of the maximum power for all frequency ranges for needing to detect
The input of subordinating degree function, that is, general power fuzzy data；
Step 3: being built according to the subordinating degree function of the subordinating degree function of the maximum power for all frequency ranges to be detected and general power
Vertical fuzzy inference rule；
Step 4: inputted according to the fuzzy data of the input of the fuzzy data of maximum power and general power, using fuzzy inference rule,
Data fusion is carried out, fuzzy set is formed；
Step 5: carrying out dimension-reduction treatment to fuzzy set；
Step 6: establish sharpening function, using the subordinating degree function after the fuzzy set of step 4 and step 5 dimension-reduction treatment as
The input of the sharpening function of foundation, the output of sharpening function are influence power of the electromagnetic leakage to whole star Electro Magnetic Compatibility
Weight；
Step 7: sequence descending for the weighing factor of each aperture, that is, cook up electromagnetic leakage detection ordering.
3. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: Step 1: the maximum power value to each radio frequency band and the total power value progress data mould in each radio frequency band
Gelatinization processing, specific as follows:
In each radio frequency band, the maximum power value for the electromagnetic leakage that will test and the radio frequency band electromagnetic leakage it is total
Performance number makes the difference with electromagnetic leakage limit value respectively, by the specific value of obtained difference, is based on domain value range, is converted into mould
Paste number.
4. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: the limit value of preset electromagnetic leakage, specific as follows: electromagnetic leakage limit value is that corresponding frequency band satellite RF receives system
The sensitivity of system.
5. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: according to the total power value of the maximum power value of electromagnetic interference leakage and electromagnetic interference leakage, it is determining with it is preset
The difference of the limit value of electromagnetic leakage, specific as follows:
Difference includes two parts: one is detecting that electromagnetic leakage power maximum value subtracts electromagnetic leakage limit value；The second is detection
To electromagnetic leakage total power value subtract electromagnetic leakage limit value.
6. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: the value range of electric field domain and power domain is determined according to the difference of the difference of maximum power and general power, specifically
It is as follows:
The value of domain is [- satellite Electro Magnetic Compatibility safety margin ,+satellite Electro Magnetic Compatibility safety margin].
7. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: the difference of the difference of maximum power and general power is converted to the fuzzy subset of maximum power and the mould of general power respectively
Subset is pasted, specific as follows:
According to domain range, value of the difference of the difference of maximum power and general power within the scope of domain is determined into fuzzy subset
{ NB, NM, NS, Z, PS, PM, PB }；
Wherein, NB, NM, NS, Z, PS, PM and PB respectively indicate in negative big, negative, bear it is small, zero, it is just small, just neutralizing it is honest.
8. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: according to the value range of respective domain and fuzzy subset, establishing the subordinating degree function of maximum power and the person in servitude of general power
Category degree function is triangle subordinating degree function.
9. a kind of satellite capsule plate electromagnetic leakage detection device towards multiposition, wide-band according to claim 2, special
Sign is: according to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, respectively obtaining is needed
The fuzzy data input of the i.e. maximum power of the subordinating degree function of the maximum power for all frequency ranges to be detected and being subordinate to for general power
The input of function, that is, general power fuzzy data is spent, specific as follows:
Wherein, μ indicates the subordinating degree function value of single frequency range；P indicates input value；M indicates band number；F indicates frequency range, PinIt indicates
Subordinating degree function value after comprehensively considering three frequency ranges.
10. a kind of satellite capsule plate electromagnetic leakage detection method towards multiposition, wide-band according to claim 1,
It is characterized in that steps are as follows:
(1) near field electric field probe is arranged in each position of opening of satellite capsule plate, acquires the electromagnetic leakage of each position of opening,
It send to spectrum analyzer；
(2) spectrum analyzer is directed to each radio frequency band of satellite, tests the electromagnetic leakage of each position of opening in each radio frequency
The maximum power value of frequency range and total power value in each radio frequency band are sent to control computer；
(3) maximum power value of the computer according to each radio frequency band and the total power value in each radio frequency band are controlled, is carried out
Data analysis, obtains according to data analysis result, and according to data analysis result, advise to electromagnetic leakage point detection ordering
It draws.
11. a kind of satellite capsule plate electromagnetic leakage detection method towards multiposition, wide-band according to claim 10,
Be characterized in that: step (3) controls maximum power value of the computer according to each radio frequency band and the total work in each radio frequency band
Rate value carries out data analysis, specific as follows:
Step 1: the maximum power value to each radio frequency band and the total power value progress data obfuscation in each radio frequency band
Processing；
It is determined in each radio frequency band according to the total power value of the maximum power value of electromagnetic interference leakage and electromagnetic interference leakage
With the difference of the limit value of preset electromagnetic leakage；
The value model of maximum power domain and general power domain is determined according to the difference of the difference of maximum power and general power respectively
It encloses；The difference of the difference of maximum power and general power is converted to the fuzzy subset of maximum power and the fuzzy son of general power respectively
Collection, according to the value range of respective domain and fuzzy subset, establishes the subordinating degree function of maximum power and the degree of membership of general power
Function；
Step 2: according to the subordinating degree function of the subordinating degree function of the maximum power of each radio frequency band and general power, respectively
To the fuzzy data input and general power of the i.e. maximum power of subordinating degree function of the maximum power for all frequency ranges for needing to detect
The input of subordinating degree function, that is, general power fuzzy data；
Step 3: being built according to the subordinating degree function of the subordinating degree function of the maximum power for all frequency ranges to be detected and general power
Vertical fuzzy inference rule；
Step 4: being inputted according to the fuzzy data of the input of the fuzzy data of electric field and power, using fuzzy inference rule, counted
According to fusion, fuzzy set is formed；
Step 5: dimension-reduction treatment is carried out to fuzzy set, i.e., to each radio frequency band for needing to detect, by carrying out dimension-reduction treatment,
Subordinating degree function after obtaining dimensionality reduction:
Step 6: establish sharpening function, using the subordinating degree function after the fuzzy set of step 4 and step 5 dimension-reduction treatment as
The input of the sharpening function of foundation, the output of sharpening function are influence power of the electromagnetic leakage to whole star Electro Magnetic Compatibility
Weight；
Step 7: sequence descending for the weighing factor of each aperture, as electromagnetic leakage inspection planning sequence next time.
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| CN108267647A (en) * | 2017-12-19 | 2018-07-10 | 中国电子科技网络信息安全有限公司 | A kind of detection method and device of power supply conduction electromagnetic leakage protection |
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| US20110291011A1 (en) * | 2010-05-27 | 2011-12-01 | National Chung Cheng University | Battery-free electromagnetic leakage detector |
| CN103592983A (en) * | 2013-10-30 | 2014-02-19 | 浪潮电子信息产业股份有限公司 | Dynamic voltage regulation design method based on fuzzy logic control |
| CN104579521A (en) * | 2014-12-25 | 2015-04-29 | 中国科学院信息工程研究所 | Spectral centroid based automatic detection method and system for video leakage signal |
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| CN114264888A (en) * | 2021-12-07 | 2022-04-01 | 中国空间技术研究院 | Pulse type electromagnetic leakage test method for SAR loaded satellite |
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