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1、附录三论文相关外文翻译TheSummarizingoftheGlobalPositioningSystemAbstractGlobalPositioningSystemisbasedonthebackgroundoftheUnitedStatesDepartmentofDefense.Itisdesigned,invested,developed,andoperatedbytheUnitedStatesDepartmentofDefense,GPSisasatellite-basedpositio
2、ningandtimetransferringGPSpositioningfunctionhasawiderangeofapplicationsinthemodernmeasuringandamoremodernbuilding.GPS-RTKtechnologyisalsowidelyusedinmodernizationbuilding,andnowGPShasalsobeenshowntobeaninterestofanimportantciviliancommunities,andincr
3、easinglywiderangeofapplication.Keyword:GPSLocatingRTKLayoutSurvey1BackgroundThe50s,theformerU.S.S.Rhasnotlaunchedhumanitiesfirstartificialearthsatellite,theAmericanscientistsinalongitstrackresearchin,haddiscoveredtheDopplershiftphenomenon,andhasfacili
4、tatedDopplersatellitenavigationpositioningsystemcompletingusingthisprinciple,hasobtainedtheenormoussuccessinthemilitaryandthecivilaspect,wasinanavigationlocalizationhistoryleap,ourcountryoncehasalsointroducedmanyDopplerreceiver,appliedtotheislandassoc
5、iationmeasured,theEarthexploredandsoonthedomain.ButbecauseDopplersatelliteorbithighlylow,signal-carrierfrequencylow,thetrackprecisionenhanceswithdifficulty,causesthepointingaccuracylowly,satisfiesthegeodeticsurveyortheprojectsurveyrequest,ismoreimposs
6、ibletouseintheastronomyEarthdynamicsresearch.Inordertoenhancethesatellitepositioningtheprecision,USstartedfrom1973toprepareforconstructionglobalpositioningsystemGPS(GlobalPositioningSystem).Afterhasenteredtheplanproof,thesystemteststage,startedin1989t
7、olaunchtheofficialworksatellite,andcompletelycompletedin1994,investmentuse.TheGPSsystemspaceartificiallyiscomposedbytwentyonesatellites,evenlydistributesinsixorbit,thegroundlevelis20,000Kilometers,theinclinationoforbitis55,theflatheartrateapproximatel
8、yis0,theweekcontractis12hours,thesatellitetotheearthlaunchingtwowavebandsintelligencesignals,theintelligencesignalfrequencyrespectivelyis1575.442megacyclespersecond(theL2waveband),onthesatellitehasinstalledtheprecisionveryhighatomicclock,guara
