二維隨機(jī)分布目標(biāo)寬帶電磁散射特性的研究.pdf

1、安徽大學(xué)碩士學(xué)位論文二維隨機(jī)分布目標(biāo)寬帶電磁散射特性的研究姓名：吳子懷申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電磁場(chǎng)與微波技術(shù)指導(dǎo)教師：孫玉發(fā)20070401二維黼機(jī)分和n標(biāo)寬帶電磁散射特性的研究ABSTRACTMoreinformationofobjectscanbeobtainedfromdevelopingthewidebandradarandultrawidebandradarWiththefrequencyincreasingandthewa

2、velengthdecreasing，theoriginalobjectsbecomeelectricallylargeMeanwhile，theobjectsarethosewhichismultiplerandomdistributionobjectsintheworldSoitisimportanttostudythewidebandelectromagneticscatteringcharacteristicsofelectri

3、callylargeobjeetsandmultiplerandomdistributionobjectsThetheoryofthemethodofmoments(MOM)isintroducedfirstlyinthethesis，andsomebasicfunctionsandtestingfunctionsarediscussed，thenhowtocomputetheradarCROSSsectionsoftwodimensi

4、onalconductingobjectsandtwo—dimensionaldielectricobjectsarealsointroducedThenthewide—bandelectromagneticscatteringcharacteristicsoftwo—dimensionalconductingobjectsandtWOdimensionaldielectricobjectsareanalyzedwiththeasymp

5、toticwaveformevaluation(AWE)techniqueIntheend，thewide—bandelectromagneticscatteringcharacteristicsofthetwo—dimensionalmultiplerandomconductingobjcotsandtwo—dimensionalmultiplerandomdielectricobjcotsareanalyzedwiththeasym

6、ptoticwaveformevaluationtechniqueThesystematicalanalysisisgiveninthewide—bandelectromagneticscatteringcharacteristicsoftwodimensionalmultiplerandomconductingobjectsandtwo—dimensionalmultiplerandomdielectricobjcotsforthef

7、irsttimeinthisthesisAprojectispresented，whichismoreefficientthantraditionalMOM，inanalyzingthewidebandelectromagneticscatteringcharacteristicsoftwodimensionalmultiplerandomconductingobjcotsandtwo—dimensionalmultiplerandom

8、dielectricobjeets，andwhilemultiplerandomobjcotsbecomelargeorthenumberofrandomobjectsbecomemoreandmore，thewide—band’electromagneticscatteringcharacteristicsareverydifficulttobeanalyzedbytraditionalMOM，butthepresentedproje