紅外焦平面成像系統(tǒng)建模及TOD性能表征方法研究.pdf

1、代號分類與r1070。TN，16彳：j耕搬●02Id31010【j々硼而簧它矛斟校蟲訾博士學位論文題：。繭；立，日一約≯北’hf|0點像系統(tǒng)業(yè)峨一印I)中k能出征A刮：刪究Rcsc；Lrc—h(jnMrtrl(!1111日(，。IjlIA1ttlaEil】f；卜ys1】H_：刪)h11|【】f_r114一ncgCblrⅥ‘：“jzal㈨IMc：t，hod作者姓名一一卜啦站指導教師姓名、職務張址j1教授lr州【究!學科門類l：學學14、專

2、業(yè)啦學】剃提交論文日期二o。_五年★川一AbstractAbstractllIAsinfraredfocalplanearray(FPA)detectorscontinuetomature，F(xiàn)PAbasedIRimagingsystemsbecomeamaintrendininfraredimagingfieldcomparedtoscanningimagingsystemHowtoeffectivelycharacterizethep

3、erformanceofinfraredimagingsystembasedonFPAbecomemoreandmoreimportantTraditionalperformancecharacterizationmethodsormodelsbecomeinsufficientforthistypeofimagingsystemsHence，itisnecessarytoimprovetraditionalperformanceeva

4、luationmethodorproposecompletelynewperformancemodeltosatisfytheperformanceevaluationofthenovelIRFPAimagingsystemInthispaperthefollowingworksarestudied(1)AccordingtosignaltransfermechanismofIRFPAimagingsystem，theContinuou

5、s／Discrete／ContinuousmodelisintroducedtoanalyzevariouseffectsofinfraredimagingsystemBasedonthemodelingofthelineareffect，nonlineareffect：geometricdistortion，vignetting，samplingartifacts，nonlinearresponsecharacternoise，rec

6、onstructionalgorithm，etataremodeledandsimulatedutilizingthepixelprocessingmethodinspatialdomainFurtherthemodelofimagingsystemisvalidatedbyminimumresolvabletemperaturedifference(MRTD)experimentsimulation(2)Pixeltransferfu

7、nction(PTF)usedtodescribemicroscanningimagingprocessisderivedforthestaringdetectorarrayFurtherthismodelisutilizedtocalculatetheamountoftheimprovementofmicroscanningtotheimagingresolutionforthedetectorarrayofdifferentfill

8、factorsAnalyticalresultsshowthatmicro—sc鋤ingCansignificantlyimprovetheresolutionandqualityofthereconstructedimage，andtheamountofimprovementofdifferentmicroScanningmodestotheimagingresolutionisdi彘rentwhichiScloselyassocia

9、tedwiththefillfactorItwillbehell：fultochoosetheoptimummicros—canningmodeaccordingtothe矗llfactorofthedetectorarrayOntheotherhandallapplicationorientedanalyticalmethodofmicroscanningimagerisproposedThemodifiedmodelofMRTDis

10、achievedbyconsideringthemicro—scanningThefieldperformanceofinfraredimagingsystembasedonmicro—scanningispredictedanddiscussedwitllthetargetacquisitionmodelThesimulatedresultsshowwhethermicro—scanningimproveinfraredimaging

11、systemperformancedependsontheotherimagingsystemparameters，andworkingconditions(3)BasedontheideaofTriangleOrientationDiscriminationThreshold(TOD)measurementmethod，severalManglepatternswithdifferentsizesaredesigned，accurat