24433.對流層延遲改正在gps數(shù)據(jù)處理中的應(yīng)用與研究

1、分類號：P2210710—06260015驤步犬海碩士學(xué)位論文對流層延遲改正在GPS數(shù)據(jù)處理中的應(yīng)用與研究丁曉光導(dǎo)師姓名職稱張勤教授申請學(xué)位級別工學(xué)碩士學(xué)科專業(yè)名稱大地測量學(xué)與測量工程論文提交日期2009年4月20日論文答辯日期2009年6月6日學(xué)位授予單位長安大學(xué)答辯委員會主席李家權(quán)教授學(xué)位論文評閱人張永志教授陳憲冬副教授AbstractWhenGPSsignaltransmitinthetroposphereoftheearth，i

2、tmayproducespeeddelayandinflectingdelayonaccountofatmosphererefraction，calledsignaltransmissiondelayTropsophericdelayisthemainerrorsofimprovingtheprecisionofGPSpositioningBasedonbasicknowledgeofthetroposphere，thispaperst

3、udyontheinfluenceofGPSpositioningbytropsophericdelayAnalysisthetheoreticandmethodoftroposphericdelaycorrection；theestablishmentofregionaltroposphericzenithdelaymodel；theapplicationoftropospheredelayinthedataprocessingSom

4、eexperimentsaregiven，theresearchpurposeis，CanbeabletocorrectthetropospherebeRer，andprovideahelpfulfoundationtoimprovetheaccuracyofpositioningThemainresearchcontentsareasfollows：I，Studyonthetroposphericdelaycorrectionmeth

5、odofparameterestimationandcorrectionmodelUsemeasuredGPSdata，analysisthemethodofparameterestimationinsingle—model，singleparameterpiecewiseconstant，piecewiselinearandrandomprocessbyGPSrelativepositioning，inordertocompareth

6、eresultsofkindsofparameterestimation，andtheimpactofdifferentialpositioningEvaluatetheprecisionandapplicabilityaboutthreecommonlyusedzenithdelaymodelatpresent，includingHopfieldmodel，SaastamoinenmodelandEGNOSmodelwhichdon’

7、tneedmeasuredmeteorologicalparametersTropospheremappingfunctionisanimportantcomponentofthedelaycorrectionDealwithactualdatabyusingfivemappingfunctionssetinGAMITsoftware，compareandanalysisresultsofthesefunctions2，Regional

8、troposphericzenithdelaymodelisestablishedbyusingtheradiosondedateincityofXi’anHowtoanalysesmeteorologicaldataandestablisharegionalatmosphericmodelarediscussedindetailUseregionalmodelandotherclassicalmodelrespectivelyinpr