基于细导线fdtd舰船多天线电磁兼容分析

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1、AbstractThemainpurposeofthispaperistoanalyzetheelectromagneticcompatibilityofshipmulti-antennasystems,theFinitedifferencetimedomainmethod---atransienttimedomainmethodmoreusedinelectromagneticcalculationmethodisused.Whenthetraditionalmethodwasusedtomodelingofthehullandtheantenna,whiletheproport

2、ionofthemodelispoor,thereissomeimpactofaccuracyorcircumstancesrequireofgreatamountofcomputewascsused.So,thethinwiremethodwasintroducedwhentheFDTDmethodwasusinginthisarticle.Whentheratioofthesizeofthemodelandtheradiusofantennawaslargeinthecalculatingoflargermodel,thethinwiremethodprovidedhowtor

3、educethecalculationamountofthesoftwarewhileusingYeegridsetting,andnotaffecttheaccuracyofthecalculationoftheantenna.Atthisstage,withtheapplicationsrangeofelectronicwarfareincreasingwide,mutualinterferencebetweenvariouselectronicequipmentmoreandmorecausedinshipcommunicationsystems.Forsuchalargea

4、ntennaplatform,duetoalotfactorsshouldbeconsideredwhenmodeling,usingthethinwiremethodcanbeeasilymodeledandsimplifiedcalculatedThispaperdescribestheiterativeformulaandtheboundariesparameterssettingofthetraditionalFDTDmethod,anddetailedinformationontheantennaimpedancecalculationinvariousantennaar

5、rangement，andthendescribesthinwiremethodandsomeimprovementsofthinwiremethodincludedtheexcitationsourceimprovementandthethin-wiremodelsimprovement,andgivestheFDTDprogramdesignideasbasedonthin-wiremethodandtheabsorbingboundaryofUPML,discussesthecabelsfdtdprogramwrittenbyC++andverifythecorrectnes

6、softheprogramcombinedoperatorcases.Keywords:ThinwiremethodFDTDTheantennaimpedanceShipelectromagneticcompatibilityShipmultipleantennasystemsAntennacoupling目录目录第一章绪论.....................................................................................................................11.1研究背景和意义...

7、...............................................................................................11.2时域有限差分法的概述.....................................................................................41.3国内外研究动态...............................