1、分類(lèi)號(hào)：P2210710—06260015驤步犬海碩士學(xué)位論文對(duì)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(qǐng)學(xué)位級(jí)別工學(xué)碩士學(xué)科專(zhuān)業(yè)名稱大地測(cè)量學(xué)與測(cè)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(zhǎng)安大學(xué)答辯委員會(huì)主席李家權(quán)教授學(xué)位論文評(píng)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