半空間復(fù)雜目標(biāo)的高頻分析方法.pdf

1、西安電子科技大學(xué)博士學(xué)位論文半空間復(fù)雜目標(biāo)的高頻分析方法姓名：李曉峰申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：電磁場(chǎng)與微波技術(shù)指導(dǎo)教師：謝擁軍20090901AbstractToday’Scomplex，thevariedelectromagneticenvironmentonthebattlefieldradarsystemperformance，environmentalelectromagneticscatteringanalysisandconc

2、ealedtargetdetectionandidentificationmethodshaseverincreasingdemandsElectromagneticenvironmentinthecomplexandeverchanging，becauseoftheinteractionbetweenthetargetandtheenvironment，backgroundandobjectivestothesurfaceofthec

3、omplexscatteringandradiation，F(xiàn)orexample，theseaoflowflyingmissiles，theforestvegetationcoversuchasmilitarytargets，makethetargetofthemodulationeffectoftheincidentelectromagneticwavewiththegoalofindependenceexistsisverydiffe

4、rentfromthemodulmioneffectsTherefore，thereistheimportanttheoreticalvalueandmilitaryapplicationsasbattlefieldenvironmenttocarryOUtthedifferentobjectivesoftheelectromagneticscatteringInthispaper’thespecificworkandinnovatio

5、nincludethefollowing：1Inhigh—frequencyarea，thecomplextargetsCanbecalculatedwithGRECOmethod，andtheobjectivesoftheedgediffractionandsurfacescatteringcanbecalculatedwiththephysicaloptics(PO)methodandtheequivalentelectromagn

6、eticmethod(MEC)，thentheresultsofRCSofcomplextargetsisforecast；Basedonthis，thecalculationsofmetalsurfacescoated、ⅣithradarabsorbingmaterialsiscomputedbytheequivalenttransmissionlineFromtheelectromagneticfieldintegralequati

7、on，themedia，coatingtargetscallbeconsideredIntheend，themetal，dielectric，coatingthemixedtargetcanbeconsidededbythesameway2Focusonanalysisofelectromagneticscatteringmedia，wemadeuseofthetraditionalsurfaceintegrationmethodfor

8、inhomogeneousmediatocomputerthemediumbefore，andnOWtheBornandRytovapproximationhavebeenintroducedbasedontheVolumeintegralequation，thentheanalysisoftheweakscatteringmediumisconsidered3Forthepastphysicalopticalmethodsoverlo

9、okedthecurrentimpactofshadowzoneandledtotheincreasingproblemsofthelargeanglebistaticcalculation，theimprovedmethodisdeducedbyintroducingtheimprovedcurrentmarchingtechniqueintoconventionalPOmethodCombinedwiththegraphical—e