高頻算法在電磁散射計(jì)算中的應(yīng)用.pdf

1、南京理工大學(xué)碩士學(xué)位論文高頻算法在電磁散射計(jì)算中的應(yīng)用姓名：徐翠申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：陳如山20091001碩士論文AbstractPredictingtheelectromagnetic(EM)scatteringfromelectricallargeandcomplextargetshasimportantapplicationinthedesigningofradarsystemsandtheidenti

2、fyingofradartargetsThehighfrequencymethodhasadvantagesinspeedandinexhaustmemoryS0themethodhasdiscussedinthepaperThePhysicalOptics(PO)methodisusedinanalyzingelectricallylargetargetsinthefirstsectionofthispaperThePOmethodi

3、sinaccurateinanalyzingtheelectricalsmalltargetsAtraditionalmethodtoamendtheresultofthePOmethodistointroducetheequivalentedgecurrents(EEC)InthispaperanewmethodisintroducedtoamendthePOmethodThemethodconceptnamed‘modifiedsu

4、rfacenormalvectors”，whichisdefinedinawaythatthereflectionlawissatisfiedateachpointofinterestintheintegrationregion，isintroducedtoamendtheequivalentcurrentsofthePOmethodThisnewmethodisvalidatedincalculatingseveralsimpleob

5、jectsTheresultsoftheseobjectsshowthatthenewmethodcandrasticallyenhancestheaccuracyofthePOtoaleveloftheGTDaccuracyTheShootingBounceRay(SBR)methodisusedincomputingtheobjectwhichiscoated、析tIlanisotropymaterialinthesecondsec

6、tionofthispaperWereconstructedtheMaxwell’Sequationsintheanisotropicmediumintheformofone—ordernormaldifferenceequationsonthetransversecomponentsoftheEMfieldTheeigenvaluesandeigenvectorsareobtainedaftersolvingtheseequation

7、sThe(GTM)methodisusedtodiscussthereflectionandtransmissioncoefficientsTheobtainedcoe伍cientsarecombinedwiththeSBRmethodtoanalyzetheRCSoftargetscoatedwitllanisotropymaterialsTheresultsshowtheanisotropicmediumcallreducetheR

8、CSoftargetseffectivelyIntheend，itdiscussedtheapplicationofthestationaryphasemethodfortheintegralofPOandgavetheexpressionsofthestationaryphasemethodbasedonthecurvedquadranglesurfacefortheperfectconduct；focusedontheapplica