金屬目標(biāo)的毫米波輻射特性與成像特征分析.pdf

1、聲明本學(xué)位論文是我在導(dǎo)師的指導(dǎo)下取得的研究成果，盡我所知，在本學(xué)位論文中，除了加以標(biāo)注和致謝的部分外，不包含其他人已經(jīng)發(fā)表或公布過的研究成果，也不包含我為獲得任何教育機(jī)構(gòu)的學(xué)位或?qū)W歷而使用過的材料。與我一同工作的同事對(duì)本學(xué)位論文做出的貢獻(xiàn)均已在論文中作了明確的說明。研究生簽名：麴疊伽f7年弓月；日學(xué)位論文使用授權(quán)聲明南京理工大學(xué)有權(quán)保存本學(xué)位論文的電子和紙質(zhì)文檔，可以借閱或上網(wǎng)公布本學(xué)位論文的部分或全部?jī)?nèi)容，可以向有關(guān)部門或機(jī)構(gòu)送交并授

2、權(quán)其保存、借閱或上網(wǎng)公布本學(xué)位論文的部分或全部?jī)?nèi)容。對(duì)于保密論文，按保密的有關(guān)規(guī)定和程序處理。研究生簽名：加f7年弓月弓日Abstract碩士學(xué)位論文AbstractWiththedevelopmentofinformationtechnology，thedetectionandrecognitionofmetaltargetshasalwaysbeenanLmportantresearchdirectioninbothmilitary

3、andcivilfieldsPassivemillimeterwavecandistinguishmetaltargetsinharshenvironmentsuchassmoke，fox，dustandSOonbecauseofitsuniquebandadvantageEvenbetter，passiveworkcontributestOexcellentconcealedperformanceAtpresent，millimete

4、rwavehasbeenwidelyusedinprecisionammunitionguidanceandgroundarmoredtargetdetectionandanti—detectionIngeneral，themetaltargetsinrealityhavecomplexthreedimensionalstructureswhichlcadtomorecomplexradiationreflectionpathsthan

5、也oseplanetargets，andcorrespondingly，itsmillimeter—waveradiationimageshasmorealiasededgeswitchcharacteristicscannotbeeasilyextractedInthispaper，theabove—mentionedcharacteristicsofthestereoscopicmetaltargetarestudiedthemai

6、nresearchworkiSasf01lows：(1)Thebasicprincipleofmillimeterwaveradiation，millimeterwaveradiometersystemandradiometercalibrationmethodaresystematicallyanalyzedTheradiationcharacteristicsoftheskyandcementbackgroundinthe3mman

7、d8mmbandsweresimulatedwithdifferentenvironmentalparameters，atmosphericparameters，dielectricconstantsandphysicalgeometricalcharacteristicsThebackgroundoftheradiationmodelingofmetalstereotargetsWasestablished(2)Accordingto

8、thebasicprincipleofmillimeterwaveradiationmeasurement，themethodofbinarizationandraytracingareusedtomodelthestereoscopictargetsbasedonthetheoreticalmodeloftraditionalmetalplanartargetradiationcharacteristicsThemodeledappa

9、renttemperaturewasshownintheone—dimensionalcurveswitchwerecomparedwiththemeasuredresultsby3ramand8mmradiometersSimultaneously，themillimeterwaveradiationimagesofmetalsphereandmetalcolumnweremeasuredbygridmethod(3)Theradia

10、tioncharacteristicsofthetypicalshapemetalobjectsaremeasuredmfixedpointsindifferentbackgroundenvironments，suchastheseaareainChongmingIsland，theconcreteinthecampusandtheabsorbingmaterialTheinfluenceofthespecificthree—dimen

11、sionalstructuresonthetargetradiationcharacteristicsiSanalyzedFurthermore，theexperimentofextemalfieldradiationimagingwascarriedoutforthemetalobjectswithcomplexstructuresindifferentlandbackgrounds(grassland，sandyland，cemen

12、tground)，andtheedgeinformationofthetargetwasextractedbyusingactivecontourmodelalgorithmAtthesametime，analgorithmforfastextractionoftargetfeaturesisproposedbasedontheedgefeatureofthetargetimageTheresultsshowthatthepropose

13、dalgorithmcaneffectivelyextractthetargetfeatureinformationThemodelingandanalysisofstereoscopicmetaltargets，themeasurementinthelaboratorytogetherwiththemeasurementofdifferentbackgroundsindifferentfields(1andandseaarea)pro