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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,andoperatedbytheUnitedStatesDepart
2、mentofDefense,GPSisasatellite-basedpositioningandtimetransferingGPSpositioningfunctionhasawiderangeofapplicationsinthemodernmeasurementandamoremodernbuilding.GPS-RTKtechnologyisalsowidelyusedinmodernizationbuilding,andnowGPShasalsobeenshowntobeanimpo
3、rtantciviliancommunitiesofinterest,andincreasinglywiderangeofapplicated.Keyword:GPS,Locating,RTK,Layout,Survey1.BackgroundThe50s,theformerU.S.S.Rhasnotlaunchedhumanitiesfirstartificialearthsatellite,theAmericanscientistsinalongitstrackresearchin,hadd
4、iscoveredtheDopplershiftphenomenon,andhasfacilitatedDopplersatellitenavigationposi-tioningsystemcompletingusingthisprinciple,hasobtainedtheenormoussuccessinthemilitaryandtheciviaspect,wasinanavigationlocalizationhistoryleap,ourcountryoncehasalsointro
5、ducedmanyDopplerreceiver,appliedtotheislandassociationmeasured,theEarthexploredandsoontheappliedtotheislandassociationmeasured,theEarthexploredandsoonthedomain.ButbecauseDopplersatelliteorbithighlylow,signal-carrierfrequencylow,thetrackprecisionenhan
6、ceswithdifficulty,causesthepointingaccuracylowly,satisfiesthegeodeticsurveyortheprojectsurveyrequest,ismoreimpossibletouseintheastronomyEarthdynamicsresearch.Inordertoenhancethesatellitepositioningtheprecision,USstartedfrom1973toprepareforconstructio
7、nglobalpositioningsystemGPS(GlobalPositioningSystem).Afterhasenteredtheplanproof,thesystemteststage,startedin1989tolaunchtheofficialworksatellite,andcompletelycompletedin1994,investmentuse.TheGPSsystemspaceartiallyiscomposedbytwentyonesatellites,even
8、lydistributesinsixorbit,thegroundlevelis20,000Kilometers,theinclinationoforbitis55,theflatheartrateapproximatelyis0,theweekcontractis12hours,thesatellitetotheearthlaunchingtwowavebandsintelligencesignals,theintelligencesignalfrequencyrespectivelyis15