復(fù)雜目標(biāo)瞬態(tài)電磁散射的時域積分方程方法分析.pdf

1、聲明本學(xué)位論文是我在導(dǎo)師的指導(dǎo)下取得的研究成果，盡我所知，在本學(xué)位論文中，除了加以標(biāo)注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過的研究成果，也不包含我為獲得任何教育機構(gòu)的學(xué)位或?qū)W歷而使用過的材料。與我一同工作的同事對本學(xué)位論文做出的貢獻均己在論文中作了明確的說明。研究生簽名：學(xué)位論文使用授權(quán)聲明南京理工大學(xué)有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部內(nèi)容，可以向有關(guān)部門或機構(gòu)送交并授權(quán)其保存、借閱或上網(wǎng)

2、公布本學(xué)位論文的部分或全部內(nèi)容。對于保密論文，按保密的有關(guān)規(guī)定和程序處理。研究生簽名：△墜!!壘盟一————————熟噬焦監(jiān)區(qū)AbstractDispersivemediumandrandommediumarewidelyusedinthefieldsofmilitarystealthtechn0109Ymaterialscience，bioelectromagneticsandmicrowavedevicedesignItisofgr

3、eatsignificancetostudytheelectromagnetic(EM)propertiesofsuchcomplexobjects，anditwillptomotethetheoreticaldevelopmentandtechnologicalinnovationofrelateddisciplinesBecauseofthecomplexityoftheconstitutiverelationofthedisper

4、sivemediumandtheuncertaintiesoftheelectromagneticparametersofthemedium，thetimedomainintegralequ【ationmethodhasalwaysbeenthefocusofscholars’attentiononhowtorealizetheaccurateandemcientsolutionofthetransientelectromagnetic

5、characteristicsofthecomplexobjectsInthisthesisthetimedomainintegralequationmethodbasedonmarching。on。intime(MOT)schemeisappliedtoanalyzetheelectromagneticscatteringcharacteristicsofdispersivemediumInthisscheme，timedomainr

6、ecursiveconvolutionforthedispersionmediumcanbesimplified，becausetheunknownisthevolumecurrentratherthantheelectricfluxdensityComparedwiththetime—domainintegralequationmethod，whichusestheelectricfluxdensityasunknown，themet

7、hodhastheadvantagesoflowmemoryconsumptionandshortcomputingtimeInaddition，theanalysisofengineeringobjectsiscomplex，themethodisthenextendedtoanalyzetheelectromagneticscatteringpropertiesofthoseobjectscomprisingperfectelect

8、ricallyconductingbodiesanddispersivemediumAstochasticGalerkin(SG)timedomainintegralequationisproposedtoanalyzeEMscatteringfromobjectswhosepermittivityisuncertaininthisthesisThestochasticGalerkinmethodcombinesthetimedomai

9、nintegralequationmethodbasedonmarching。on’intime(MOT)schemeandpolynomialchaosexpansion(PC)methodInthisthesis，thetransientEMscatteringfromcompositedmetalandrandommediaobjectswhosepermittivityobeytheGaussiandistributionand

10、theuniformdistribution，respectively，isstudiedComparedwiththeMonteCarlomethod，theSGmethodappliedtOanalyzethetransientEMscatteringcharacteristicsofrandommediumismoreefficientKeywords：dispersivemedium，randommedium，timedomai