坐标转换中英文翻译—外文翻译毕业论文

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1、本科毕业设计（论文）中英文对照翻译院（系部）　专业名称　年级班级　学生姓名　指导老师XXX年X月XAbstractStudiesonqualityevaluationofcoordinatetransformationhavenotyettocomprehensivelyinvestigatethesimulationabilityandreliabilityofatransformation.Thispaperpresentsacomprehensivequalityevaluationsystem(QES)forcoordinatetransformationt

2、hatincludesthetestingofreliabilityandsimulationability.TheproposedQESwasusedtotestandevaluatetransformationsusingtypicalcommonpointdistributionsandtransformmodels.Boththetransformationmodelanddistributionofcommonpointsarefactorsintheeffectivenessofatransformation.Theperformancesoftypic

3、alcommonpointdistributionsandtransformmodelsaredemonstratedusingtheproposedQES.Keywords：coordinatetransformation;QES;reliability;simulationreliability;commonpointdistribution;transformmodelI.INTRODUCTIONInformationaboutcommonpointsconsistsofsignals.However,noisecausedbyinadequaciesinth

4、eprecisionofsurveyingtechniques,byshortcomingsincomputationalmodels,andbyvariationsduetocrustalmovements,etc.alsobecomeincorporated.Thisnoisecanshowsystematicorrandomcharacteristics,orcanevenappearatsomepointsasgrosserrors.Duringcomputations,randomerrorscanbeexposedasresiduals,whilesys

5、tematicerrorscanbesimulatedbysuitabletransformationmodels.Incontrast,grosserrorsareabsorbedinparametersthatresultinremarkabledistortionofthetransformation.Forthisreason,anoptimaltransformationmusthavetheabilitytosimulatesignalsandsystematicerrors(simulationability)andalsotodetectanddef

6、endagainstgrosserrors(reliability).Precisionisgenerallyconsideredtobeauniqueindicatorthatreflectsthequalityofatransformation(WellsandVanicek1975;Appelbaum1982;Featherstoneetal.1999).Chenetal.(2005)proposedanumberofsimulationindicatorsforevaluationoftheperformanceofatransformation.Youet

7、al.(2006)usedleast-squarescollocationtoeliminatenoisefromcommonpoints,butfoundthattheresultingisotropicalcovariancewasoftennotcorrect.Hakanetal.(2006)investigatedtheeffectofcommonpointdistributiononreliabilityofadatatransformation.Theyestablishedthattheredundancynumbersindatatransfor