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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2010年06月11日1515SummarizingTheGlobalPositioningSystemAbstract:GlobalPositioningSystemisbasedonthebackgroundoftheUnitedStatesDepartmentofDefense.Itisdesigned,invested,developed,andoperatedbytheUnitedStatesDepartmentofDefense,GPSisasat
2、ellite-basedpositioningandtimetransferingGPSpositioningfunctionhasawiderangeofapplicationsinthemodernmeasurementandamoremodernbuilding.GPS-RTKtechnologyisalsowidelyusedinmodernizationbuilding,andnowGPShasalsobeenshowntobeanimportantciviliancommunitiesofinterest,andincreasi
3、nglywiderangeofapplicated.Keyword:GPS,Locating，RTK，Layout，Survey1.BackgroundThe50s,theformerU.S.S.Rhasnotlaunchedhumanitiesfirstartificialearthsatellite,theAmericanscientistsinalongitstrackresearchin,haddiscoveredtheDopplershiftphenomenon,andhasfacilitatedDopplersatelliten
4、avigationposi-tioningsystemcompletingusingthisprinciple,hasobtainedtheenormoussuccessinthemilitaryandtheciviaspect,wasinanavigationlocalizationhistoryleap,ourcountryoncehasalsointroducedmanyDopplerreceiver,appliedtotheislandassociationmeasured,theEarthexploredandsoontheapp
5、liedtotheislandassociationmeasured,theEarthexploredandsoonthedomain.ButbecauseDopplersatelliteorbithighlylow,signal-carrierfrequencylow,thetrackprecisionenhanceswithdifficulty,causesthepointingaccuracylowly,satisfiesthegeodeticsurveyortheprojectsurveyrequest,ismoreimpossib
6、letouseintheastronomyEarthdynamicsresearch.Inordertoenhancethesatellitepositioningtheprecision,USstartedfrom1973toprepareforconstructionglobalpositioningsystemGPS(GlobalPositioningSystem).Afterhasenteredtheplanproof,thesystemteststage,startedin1989tolaunchtheofficialworksa
7、tellite,andcompletelycompletedin1994,investmentuse.TheGPSsystemspaceartiallyiscomposedbytwentyonesatellites,evenlydistributesinsixorbit,thegroundlevelis20,000Kilometers,theinclinationoforbitis55,theflatheartrateapproximatelyis0,theweekcontractis12hours,thesatellitetotheear
8、thlaunchingtwowavebandsintelligencesignals,theintelligencesignalfrequencyrespectivelyis15
