航空γ能谱特征和仪器谱解析方法分析-analysis of airborne γ -ray spectrum characteristics and instrumental spectrum analysis method.docx
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航空γ能谱特征和仪器谱解析方法分析-analysis of airborne γ -ray spectrum characteristics and instrumental spectrum analysis method
gritstone,limestoneandbasalt.WecanusethevariableofS1/S2todistinguishtheeffectiveatomnumbersowecandistinguishthelithology.③Theeffectofwaterinthesoilonthegamma-rayspectrometrymeasuringonthesurferofground.Withtheincreaseofthewatercontent,thefluxofgama-raydecreaseonthesurferofground.Inthepaper,authorestablishedthecorrectionmodelofwatecontentinthesoil.BytheMonteCarlosimulation,theparametersofthecorrectionmodelhadbeenacquired.Moreover,themodelcancorrecttheinfluenceofwaterbyexperimentationtestandtheerrorislessthan2%.Inthethesis,theinfluencemechanismoflandformtotheairbornegamma-rayspectrometrysurveyhasbeenanalysised,andthemicroelmentlandformcorrectionmethodhasbeenputforwarded.Basedonthenumericalcalculation,thelandformcorrectionontheairbornegamma-raysepectrometrysurveyhasbeenachieved;furthermore,theprogramcodehasbeencompleted.Thereareninetypicallandformhadbedconsideratedandcorrespondingcorrectionfactorshasbeencalculated.Asaconsequence,thereisthenewmethodforthelandformcorrectionofairbornegamma-raysepectrometrysurvey.FortheunsatisfactoryenergyresolutionoftheNaI(Tl)crystal,theproblemofscatteredraysinairbornegamma-raysepectrometryandthedefectofconventionaltripping-ratiomethod,Authorputforwardtheanalysismehodofgamma-rayspectrumforairbornegamma-rayspectrometry.①Themethodoffouriertransformapproachbackgroundbystep(FTABS)isbeenadoptedtoestimatethescatteredraysbackgroundforairbornespectrum.FTABScanestimatethescatteredrayseffectivelyonlybytheresponsefunctionmatrixwhichisestablishedbygaussianfunction.Usingthismethod,theresponsefunctionissimplerandhashigherpracticalityinfullspectrumanalysis.Bythesimulationspectrumtest,theerrorofbackgroundestimationislessthan15%.②Profitsfromtheconceptofresponsefunctionmatrix,authorestablishtherelationbetweenspectrometryandinputspectrum.Thespectrumhavebeenrestructuredbymaximumlikelihoodmethodanddirectdemodulatemethod.AFWHM-discrepantoverlappingpeakhasbeenseparatedbythespectrumrestructuredtechnology,andtheareaofpeaksmaintainsinvariable.③Thespectrumanalysisa
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