CN105224762B - A kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method - Google Patents
A kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method Download PDFInfo
- Publication number
- CN105224762B CN105224762B CN201510679750.0A CN201510679750A CN105224762B CN 105224762 B CN105224762 B CN 105224762B CN 201510679750 A CN201510679750 A CN 201510679750A CN 105224762 B CN105224762 B CN 105224762B
- Authority
- CN
- China
- Prior art keywords
- electromagnetic parameter
- contracting
- composite material
- electromagnetic
- mixing
- 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.)
- Active
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of contractings based on electromagnetic parameter optimization design than composite material preparation method, and this method includes：Step 1, the reflectance factor of original material is calculated；Step 2, electromagnetic parameter testing is carried out to mixing material：According to contracting than requiring, the electromagnetic parameter testing of the mixing material of different ratio is carried out；Step 3, the electromagnetic parameter library of the different ratio of mixing material is established：Electromagnetic parameter testing result is combined with equivalent medium theory, amendment obtains electromagnetic parameter library；Step 4, electromagnetic parameter optimizes：According to the reflectance factor of original frequency range material, mixing material is optimized, then the mix proportion scheme for obtaining contracting than composite material by electromagnetic parameter library.Contracting provided by the invention based on electromagnetic parameter optimization design is than composite material preparation method, pass through electromagnetic parameter optimization design, acquisition meets the achievable mixing material of scale-relation, engineering, meets required precision of the contracting than test, is that testing scheme is compared in a kind of effective composite material electromagnetism contracting.
Description
Technical field
The present invention relates to the composite material preparation methods in a kind of radar target signature measuring technology, and in particular, to one
Contracting of the kind based on electromagnetic parameter optimization design is than composite material preparation method.
Background technology
With a large amount of appearance of composite airplane, naval vessel and vehicle, there is an urgent need to obtain target acquisition, know for weapon system
The not target property information required with tracking, therefore obtained more and more weights for composite material target property measuring technology
Depending on.However the full-scale test of traditional target property expends limitation that is huge, and being limited to test site in modelling；Contracting
Then structurally there is bottleneck in composite material electromagnetism contracting ratio than testing, the electromagnetic scattering data of all-metal target can only be obtained, with
Real goal is larger compared to error, it would be highly desirable to break through the contracting of composite material electromagnetism than measuring technology, obtain more accurate target property
Data.
The contracting of metal material electromagnetism has been widely applied in the measurements than technology.As composite material is in advanced weaponry
Extensive use in equipment only considers Radar Objective Characteristics of the metal material contracting than cannot accurately reflect target.Composite material electricity
Magnetic scale reduction method is the key that realize the measurement of stealth radar target simulation, convenient its scattering properties of acquisition.Composite material electromagnetism contracts
Than due to its finite conductivity characteristic, the contracting of metal material electromagnetism has not been applicable in than theoretical.
By contract than principle it is found that composite material electromagnetic parameter (plural form) contract than when, need keep electromagnetism
Parameter constant.I.e.：After contracting ratio, it is n times (n is contracting than coefficient, n >=1) of original material conductivity to contract than material conductivity.
In engineering, keep electromagnetic parameter it is constant be it is highly difficult, especially when material simultaneously have electricity damage with two kinds of characteristics of magnetic loss when
Make, further increases the difficulty of preparation.
In order to keep the accurate measurement of target scattering characteristics, need to maintain contracting than material in certain angular range with original
Beginning material is consistent.Optimizing design scheme may be used and obtain electromagnetic parameter of the contracting than material.Join obtaining electromagnetism of the contracting than material
After number, the configuration precision for controlling electromagnetic parameter is the key that composite material contracts than test.
Invention content
The object of the present invention is to provide a kind of for the contracting of composite material electromagnetism than the material preparation method of test, is set in optimization
On the basis of meter contracting is than material dielectric constant, electromagnetic parameter of the contracting than material is obtained, the contracting ratio based on equivalent medium theory is carried out
Composite material is prepared, and the configuration precision of electromagnetic parameter is controlled.
In order to achieve the above object, the present invention provides a kind of contractings based on electromagnetic parameter optimization design to match than composite material
Method processed, wherein this method includes：Step 1, the reflectance factor of original material is calculated：Joined according to the electromagnetism of original frequency range material
Number calculates the reflectance factor of the horizontal polarization of original material, vertical polarization；Step 2, electromagnetic parameter survey is carried out to mixing material
Examination：According to contracting than requiring, the electromagnetic parameter testing of the mixing material of several different ratios is carried out than frequency range in contracting；Step 3, it establishes
The electromagnetic parameter library of the different ratio of mixing material：Electromagnetic parameter testing result is combined with equivalent medium theory, amendment obtains
The electromagnetic parameter library of mixing material different ratio；Step 4, electromagnetic parameter optimizes：It is right according to the reflectance factor of original frequency range material
Mixing material optimizes, consistent with original frequency range material as a result, passing through electricity again in wide angular region internal reflection characteristic to obtain
Magnetic parameter library obtains the mix proportion scheme to contract than composite material.
The above-mentioned contracting based on electromagnetic parameter optimization design is than composite material preparation method, wherein the electromagnetic parameter
Including dielectric constant and magnetic conductivity etc..
The above-mentioned contracting based on electromagnetic parameter optimization design is than composite material preparation method, wherein in the formula, εi
For particle, that is, dispersed phase dielectric constant, εeFor matrix dielectric constant, θ is particle content, NikIndicate the polarization performance of particle.
The above-mentioned contracting based on electromagnetic parameter optimization design is than composite material preparation method, wherein in the formula,
a1、a2、a3For the length of 3 axial directions of particle, and there is Ni1+Ni2+Ni3=1.
The above-mentioned contracting based on electromagnetic parameter optimization design is than composite material preparation method, wherein described to mixing material
Material optimizes, and is that the thickness to mixing material, the number of plies and the doping ratio per layer material optimize, obtains in wide angular region
Thickness, the number of plies and the doping ratio per layer material of the internal reflection characteristic mixing material consistent with original frequency range material, further according to
Its electromagnetic parameter obtains the mix proportion scheme to contract than composite material from electromagnetic parameter library.In addition, multiphase doping and Meta Materials etc.
It all can serve as the supplementary means of optimization design.
Contracting provided by the invention based on electromagnetic parameter optimization design has the following advantages than composite material preparation method：
This method meets the achievable mixing material of scale-relation, engineering by electromagnetic parameter optimization design, acquisition, meets
It contracts than the required precision of test, is that testing scheme is compared in a kind of effective composite material electromagnetism contracting.
Description of the drawings
Fig. 1 is the contracting based on electromagnetic parameter optimization design of the present invention than hanging down in the embodiment 1 of composite material preparation method
Straight polarization reflectance factor is with pitch angle change curve.
Fig. 2 is the contracting based on electromagnetic parameter optimization design of the present invention than in the embodiment 1 of composite material preparation method
Mean pole reflectance factor is with pitch angle change curve.
Contractings of the Fig. 3 based on electromagnetic parameter optimization design than vertical polarization RCS in the embodiment 1 of composite material preparation method with
Pitch angle change curve.
Contractings of the Fig. 4 based on electromagnetic parameter optimization design than horizontal polarization RCS in the embodiment 1 of composite material preparation method with
Pitch angle change curve.
Specific implementation mode
The specific implementation mode of the present invention is further described below in conjunction with attached drawing.
Contracting provided by the invention based on electromagnetic parameter optimization design than composite material preparation method, including：
Step 1, the reflectance factor of original material is calculated：Go out original material according to the electromagnetic parameters of original frequency range material
Horizontal polarization, vertical polarization reflectance factor.Electromagnetic parameter includes dielectric constant and magnetic conductivity etc..
Step 2, electromagnetic parameter testing is carried out to mixing material：According to contracting than requiring, several differences are carried out than frequency range in contracting
The electromagnetic parameter testing of the mixing material of proportioning.
Step 3, the electromagnetic parameter library of the different ratio of mixing material is established：By electromagnetic parameter testing result and effective medium
Theory combines, and amendment obtains the electromagnetic parameter library of mixing material different ratio.
In formula, εiFor particle, that is, dispersed phase dielectric constant, εeFor matrix dielectric constant, θ is particle content, NikIndicate particle
Polarization performance.
In formula, a1、a2、a3For the length of 3 axial directions of particle, and there is Ni1+Ni2+Ni3=1.
The formula is mainly applicable in low-doped ratio, and the material of highly doped ratio is prepared, is generally required by correcting the formula
Accurately electromagnetic parameter is estimated to be obtained.There are many existing modification methods, introduce modifying factor, test parameter fitting or
Progressive alternate is typical solution scheme.The parameter iterative method being combined with theoretical simulation preferably by test result.Deng
Effect medium theory is often based upon certain condition hypothesis, this makes estimating for mixing material electromagnetic parameter be usually present certain mistake
Difference is a kind of rational technical solution by test data to preferably be fitted the electromagnetic property of different ratio material.
Step 4, electromagnetic parameter optimizes：According to the reflectance factor of original frequency range material, mixing material is optimized, with
To consistent with original frequency range material in wide angular region internal reflection characteristic as a result, obtaining contracting by electromagnetic parameter library again compares composite wood
The mix proportion scheme of material.
Wherein, mixing material is optimized, be the thickness to mixing material, the number of plies and per layer material doping ratio into
Row optimization, obtains the thickness in the wide angular region internal reflection characteristic mixing material consistent with original frequency range material, the number of plies and every layer
The doping ratio of material obtains the mix proportion scheme to contract than composite material further according to its electromagnetic parameter from electromagnetic parameter library.Separately
Outside, multiphase doping and Meta Materials etc. all can serve as the supplementary means of optimization design.
The present invention is further described with reference to embodiment.
Embodiment 1：By taking carbonyl iron dust and epoxy resin mixed preparing as an example.
Go out the reflection system of its horizontal polarization, vertical polarization according to the electromagnetic parameters of original frequency range composite material first
Number, it is shown in solid referring to Fig. 1 and Fig. 2.
Fig. 1 is metal substrate, and dielectric thickness 1mm, solid line is dielectric constant 22.04+1.32i under original 4GHz frequencies,
Magnetic conductivity 3.76+2.52i；Dotted line is contracting than under 8GHz frequency, dielectric constant 11.6+0.69i's, magnetic conductivity 1.8+1.21i hangs down
Straight polarization reflectance factor is with pitch angle change curve.Fig. 2 is that horizontal polarization reflectance factor identical with Fig. 1 conditions becomes with pitch angle
Change curve.
Secondly, according to contracting than requiring, in contracting than frequency range, carry out the carbonyl iron dust of different ratio and the electromagnetism ginseng of epoxy resin
Number test；In carbonyl iron dust doping than in 0~100% range, selection increases by 5% carbonyl iron dust content every time, respectively
Carry out electromagnetic parameter testing.
Then according to equivalent medium theory and its modification method, binding test is as a result, obtain the electromagnetic parameter of different ratio
Library；Carbonyl iron dust and epoxy resin difference is recorded in electromagnetic parameter library to adulterate than electromagnetic parameter characteristic under each frequency.
Finally according to the reflectance factor of original frequency range, material thickness, number of layers and the doping per layer material are continued to optimize
Ratio obtains electromagnetic parameter of the required contracting than frequency range.Mix proportion scheme is immediately arrived at according to electromagnetic parameter library.Specifically it is optimized for material
Thickness 1mm, 1 layer of number of layers adulterate carbonyl iron dust than 30%, in contracting than under 8GHz frequency, dielectric constant 11.6+0.69i,
Magnetic conductivity 1.8+1.21i.
As shown in Figure 3 and Figure 4, it can be seen that the electromagnetic parameter of design disclosure satisfy that required precision of the contracting than test.
Fig. 3 is metal substrate, and solid line is under original 4GHz frequencies, the material of 1m × 1m × 0.001m sizes, and dotted line is contracting
Than under 8GHz frequency, the material of 0.5m × 0.5m × 0.001m sizes, respective vertical polarization RCS (Radar-Cross
Section, Radar Cross Section) with pitch angle change curve, contracting is corrected than RCS.Fig. 4 be it is identical as Fig. 3 conditions,
Horizontal polarization RCS is with pitch angle change curve.
Contracting provided by the invention based on electromagnetic parameter optimization design is than composite material preparation method, in optimization design contracting ratio
On the basis of material dielectric constant, electromagnetic parameter of the contracting than material is obtained, carries out the contracting based on equivalent medium theory and compares composite wood
Material is prepared, and the configuration precision of electromagnetic parameter is controlled, and is that testing scheme is compared in a kind of effective composite material electromagnetism contracting.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (3)
1. a kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method, which is characterized in that this method includes：
Step 1, the reflectance factor of original material is calculated：Go out the water of original material according to the electromagnetic parameters of original frequency range material
The reflectance factor of mean pole, vertical polarization, is calculated by following formula：
The reflectance factor of vertical polarization
Parallel-polarized reflectance factor
In formula, ⊥, // vertical polarization and parallel polarization are indicated respectively；Z0For the wave impedance of free space；It is situated between for multilayer
The transmission matrix of material；ZN+1For N+1 layers of wave impedance；
Step 2, electromagnetic parameter testing is carried out to mixing material：According to contracting than requiring, several different ratios are carried out than frequency range in contracting
Mixing material electromagnetic parameter testing；
Step 3, the electromagnetic parameter library of the different ratio of mixing material is established：By electromagnetic parameter testing result and equivalent medium theory
In conjunction with amendment obtains the electromagnetic parameter library of mixing material different ratio；
Step 4, electromagnetic parameter optimizes：According to the reflectance factor of original frequency range material, mixing material is optimized, to obtain
Wide angular region internal reflection characteristic is consistent with original frequency range material as a result, obtaining contracting than composite material by electromagnetic parameter library again
Mix proportion scheme.
2. the contracting as described in claim 1 based on electromagnetic parameter optimization design is than composite material preparation method, which is characterized in that
The equivalent medium theory, the formula for cylindrical particle compound system are：
Effective dielectric constant
In formula, εiFor particle dielectric constant, εeFor matrix dielectric constant, θ is particle content, NikIndicate the polarization factor of particle,
Polarization factor is by its 3 radial polarization factor N in spaceikTo determine：
In formula, ds is cylindrical particle infinitesimal, a1、a2、a3For the length of 3 axial directions, Ni1+Ni2+Ni3=1.
3. the contracting as described in claim 1 based on electromagnetic parameter optimization design is than composite material preparation method, which is characterized in that
Described optimizes mixing material, is that the thickness to mixing material, the number of plies and the doping ratio per layer material optimize,
Obtain the thickness in the wide angular region internal reflection characteristic mixing material consistent with original frequency range material, the number of plies and mixing per layer material
Miscellaneous ratio obtains the mix proportion scheme to contract than composite material further according to its electromagnetic parameter from electromagnetic parameter library.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679750.0A CN105224762B (en) | 2015-10-19 | 2015-10-19 | A kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679750.0A CN105224762B (en) | 2015-10-19 | 2015-10-19 | A kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105224762A CN105224762A (en) | 2016-01-06 |
| CN105224762B true CN105224762B (en) | 2018-08-17 |
Family
ID=54993728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510679750.0A Active CN105224762B (en) | 2015-10-19 | 2015-10-19 | A kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105224762B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106503311B (en) * | 2016-10-09 | 2019-06-11 | 上海无线电设备研究所 | Preparation method of the earth background electromagnetism contracting based on bio-based materials than material |
| CN106503377B (en) * | 2016-10-28 | 2019-07-19 | 上海神添实业有限公司 | A kind of construction method of carbon fibre composite effective dielectric constant model |
| CN106777627A (en) * | 2016-12-02 | 2017-05-31 | 上海无线电设备研究所 | A kind of honeycomb inhales the contracting of ripple plate than simulation material building method |
| CN107966617B (en) * | 2017-10-18 | 2020-02-21 | 上海无线电设备研究所 | Dynamic sea surface scaling electromagnetic scattering characteristic measurement error correction method |
| CN108090251B (en) * | 2017-11-24 | 2021-01-19 | 上海无线电设备研究所 | Wave-transparent composite material scaling design method |
| CN107968265B (en) * | 2017-12-06 | 2020-12-22 | 上海无线电设备研究所 | High-performance wave absorber design method based on scaling theory |
| CN108170950B (en) * | 2017-12-27 | 2021-08-06 | 电子科技大学 | Multilayer frequency selection surface wave-absorbing material modeling optimization method based on neural network |
| CN109614637B (en) * | 2018-10-29 | 2023-05-23 | 上海无线电设备研究所 | Electromagnetic shrinkage ratio design method for nonmetallic structure |
| CN109614652B (en) * | 2018-11-13 | 2023-05-23 | 上海无线电设备研究所 | Scaling target construction method containing coating for inhibiting gap scattering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090190A (en) * | 2014-07-22 | 2014-10-08 | 武汉大学 | Design method of scale model of extra-high voltage converter transformer |
| CN104392023A (en) * | 2014-10-30 | 2015-03-04 | 上海无线电设备研究所 | Verification method for electromagnetic model of aircraft cabin under the condition of high-intensity radiation field |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080165442A1 (en) * | 2006-11-08 | 2008-07-10 | Wenshan Cai | System, method and apparatus for cloaking |
-
2015
- 2015-10-19 CN CN201510679750.0A patent/CN105224762B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090190A (en) * | 2014-07-22 | 2014-10-08 | 武汉大学 | Design method of scale model of extra-high voltage converter transformer |
| CN104392023A (en) * | 2014-10-30 | 2015-03-04 | 上海无线电设备研究所 | Verification method for electromagnetic model of aircraft cabin under the condition of high-intensity radiation field |
Non-Patent Citations (1)
| Title |
|---|
| 高海情海面电磁缩比模拟方法及试验验证;戴飞 等;《制导与引信》;20141231;第35卷(第4期);24-28 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105224762A (en) | 2016-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105224762B (en) | A kind of contracting based on electromagnetic parameter optimization design is than composite material preparation method | |
| Oh et al. | Design of radar absorbing structures using glass/epoxy composite containing carbon black in X-band frequency ranges | |
| Jenn et al. | Wind turbine radar cross section | |
| CN103064073B (en) | A kind of method changing radar target signature based on frequency agility | |
| CN108445303A (en) | A kind of Electromagnetic scatter simulated behavior method | |
| CN108110419A (en) | A kind of method for correcting radome boresight error | |
| CN108090251A (en) | Design method is compared in a kind of wave transparent type composite material contracting | |
| CN102708257A (en) | Method for fast determining tolerance of active phased array antenna structure | |
| Zhou et al. | Realization of thin and broadband magnetic radar absorption materials with the help of resistor FSS | |
| CN106158198A (en) | A kind of wideband contracts than analog composite material compound method | |
| CN107301301B (en) | Construction method of magnetic loss type shrinkage ratio wave-absorbing material | |
| CN113281572B (en) | Method and system for testing microwave complex dielectric constant and complex permeability of material | |
| CN111103572A (en) | Satellite-borne SAR polarization calibration method and device based on distributed targets | |
| Bae et al. | Broadband multilayer radar absorbing coating for RCS reduction | |
| Dřínovský et al. | Electromagnetic shielding efficiency measurement of composite materials | |
| CN104318096B (en) | A kind of extracting method for granular material intrinsic electromagnetic parameter | |
| Sudhendra et al. | A novel 6 to 14 ghz. thin radar absorber based on circular resistive patch fss | |
| Zhao et al. | The experimental study of mutual coupling in conformal array | |
| Roelvink et al. | Determining complex permittivity from propagation constant measurements with planar transmission lines | |
| Jeon | RCS Prediction at high frequency using Cauchy method | |
| Fitzek et al. | Metamaterial matching of high-permittivity coatings for 79 GHz radar sensors | |
| Xu et al. | Fast and accurate RCS calculation for squat cylinder calibrators [measurements corner] | |
| CN109460585A (en) | A kind of millimetre-wave radar microstrip antenna designs scaling method | |
| Sokol et al. | Calibration of EM simulator on substrate complex permittivity | |
| Hu et al. | Application of spectral extrapolation technique to stepped-frequency RCS measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |