超分辨率電磁成像和基于傳輸線網(wǎng)絡(luò)的左手媒質(zhì)研究.pdf

1、東南大學(xué)碩士學(xué)位論文超分辨率電磁成像和基于傳輸線網(wǎng)絡(luò)的左手媒質(zhì)研究姓名：秦瑤申請(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：崔鐵軍20051226超分辨率電磁成像和基于傳輸線網(wǎng)紿的左手媒質(zhì)研究StudyofSuperResolutionElectromagneticImagingandLeftHandedMaterialsMadeofTransmissionLineStructuresMasterCandidate：QinYaoSup

2、ervisor：ProfCuiTieJunSoutheastUniversity，Nanjing，PRChinaAbstractSuperresolutionimagingisoneofthemostimportanttopicsinopticsandelectromagneticInelectromagneticimaging，theinformationofevanescentvcavesispossibletobecaptured

3、byusinghigh—orderornearfieldmethodTherefore，superresolutionimagingcanberealizedElectromagneticinversescatteringandimagingareimportantbranchesinthefieldofcomputationalelectromagnetics，whichfindwideapplicationingeophysical

4、probing，biomedicalimaging，laudminedetectionetcRecentyears，lefthandedmaterial(LHM)hasbeenprovedtopossessthepropettyofamplificationofevanescentwavesandperfectimagingwithsuperresolutionLefthandedmaterial，alsonamedasmetamate

5、rial，isanewlyrisensubjectthathasgrowninternationallypopularrecentlyIthasnowarousedintensiveattentionofvariouscountiesElectromagneticinversescatteringandimagingarecomplicatednonlinearproblemsInnlostofapplications，linearin

6、versescatteringapproximationhasbeenusedHoweverlinearinversescatteringisnotaccurateforimagingofhighcontrastobjects，Inthisthesis，high—orderinversescatteringalgorithmsareproposedOnthebaseoflinearinversescattering，thenewalgo

7、rithmsresultingoodresolutionwithoutanyrequirementforsolvingnonlinearintegralequationsInthepaperformulasofthelaighorderalgorithmsarecarefullyderivedinthecaseoftwodimensionsandthreedimensions，respectivelyAgreatdealofnumeri

8、calsimulationshavebeendonetoprovethevalidityandefficiencyofthealgorittmxsLHMhasmanyamazingcharacteristicsdifferentfromnormallyexistingmaterialinthenatureInthethesis，somephysicalpropertiesofLHMarediscussedonperfectimaging

9、theoryandsuperresolutionimaging，Meanwhile，acomprehensiveintroductionontherealizationoflefthandedmaterialisgiven，andageneraltransmission—linemodelfortheLHMrealizationhasbeenpresentedDetaileddesignformulasforparametersofLH

10、Mtransmissionlinematerial，togetherwiththederivationalprocedure，areprovidedByuseofcommercialsoftwaresimulationshavebeenconductedforthegeneraltransmissionlinemodelinLHMrealizationFinallytherealizationofopencaviliesmadeofLH