毕业论文英语翻译及原文

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1、ARESEARCHONDATAPROCESSINGMODELOFGPSDAMDEFORMATIONMONITORINGNETWORKAbstract:ConsideringtheparticularityoftheGPSdamdeformationmonitoringnetwork,adataprocessingmodelbasedonthestationorthogonalcoordinatesystemforthree-dimensionGPSdamdeformationmonitoringnetwork,wasp

2、utforward.Also,amathematicalmodelofusingtheclusteringanalysismethodinfuzzymathematicstotesttherelativestabilityofquasi-stablepoints(ordatummarks)wassuccessfullybroughtforward.Theadjustmentmethodduringthecourseofdataprocessingwasquasi-stableadjustment.Atlast,asof

3、twaresystemofthree-dimensionGPSdamdeformationmonitoringnetworkwasdesignedandopenedupwiththehelpofVisualBasicLanguage.Withthreeperiods’observationdatafromtheGPSdeformationmonitoringnetworkofadam,anadjustmentcalculationwasdonebythesoftware.Thecalculationresultshow

4、sthatthemathematicalmodelscanbemoresuitableforthedataprocessinginGPSdamdeformationmonitoringnetwork.Keywords:GPS,Damdeformationmonitoring,Quasi-stableadjustment,Clusteringanalysis1.IntroductionWGS-84coordinatesystemisgenerallyusedinGPS.Butlocalorindependentcoord

5、inatesystemsareusuallychosenindamdeformationmonitoringnetworksfortheirsmallareas.Duringthecourseofpastdataprocessing,theadjustmentunderWGS-84coordinatesystemforindependentnetworksornetworkswithseveralfixedpointsisoftenfirstlymade.Then,thetransformationfromWGS-84

6、coordinatesystemtolocal(orindependent)coordinatesystemsisdone.ForGPSdeformationmonitoringnetworkswithrepetitiveobservationdata,theobviouschangeofdatummarkscoordinatesunderthetwodifferentcoordinatesystemscanbebroughtbythetinydeformationofdatummarksamongdifferentp

7、eriodsofobservation.Andthegreatererrorcanbemadeduringthecoordinatetransformation.IfalocalGausscoordinatesystemischosen,theprojectiondistortionscanalsobeproducedbythetransformationitself.Forthereasonsabove,thestationorthogonalcoordinatesystemischosenasthereferenc

8、ecoordinatesystemfordataprocessingofGPSdamdeformationnetworks.Andthemathematicalmodelisputforwardanddeduced.2.Dataprocessingmodelbasedonthestationorthogonalcoordinate