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1、文华学院毕业设计（论文）外文文献翻译（本科学生用）题目：学生姓名：学号：学部（系）：专业年级：指导教师：职称或学位：20年月日外文文献翻译（译成中文1200字左右，外文内容应与自己毕业设计（论文）题目相关。艺术、汉语言文学、日语专业除外）一、英文SummarizingTheGlobalPositioningSystemAbstract:GlobalPositioningSystemisbasedonthebackgroundoftheUnitedStatesDepartmentofDefense.ltisdesigned,invested,developed,andoperatedbytheU
2、nitedStatesDepartmentofDefense,GPSisasatellitebasedpositioningandtimetransferingGPSpositioningfunctionhasawiderangeofapplicationsinthemodernmeasurementandamoremodernbuilding.GPSRTKtechnologyisalsowidelyusedinmodernizationbuilding,andnowGPShasalsobeenshowntobeanimportantciviliancommunitiesofinterest,
3、andincreasinglywiderangeofapplicated.Keyword:GPS,Locating,RTK,Layout,Survey1.BackgroundThe50s,theformerU.S.S.Rhasnotlaunchedhumanitiesfirstartificialearthsatellite,theAmericanscientistsinalongitstrackresearchin,haddiscoveredtheDopplershiftphenomenon,andhasfacilitatedDopplersatellitenavigationpositio
4、ningsystemcompletingusingthisprinciple,hasobtainedtheenormoussuccessinthemilitaryandtheciviaspect,wasinanavigationlocalizationhistoryleap,ourcountryoncehasalsointroducedmanyDopplerreceiver,appliedtotheislandassociationmeasured,theEarthexploredandsoontheappliedtotheislandassociationmeasured,theEarthe
5、xploredandsoonthedomain.ButbecauseDopplersatelliteorbithighlylow,signalcamerfrequencylow,thetrackprecisionenhanceswithdifficulty,causesthepointingaccuracylowly,satisfiesthegeodeticsurveyortheprojectsurveyrequest,ismoreimpossibletouseintheastronomyEarthdynamicsresearch.Inordertoenhancethesatellitepos
6、itioningtheprecision,USstartedfrom1973toprepareforconstruedonglobalpositioningsystemGPS（GlobalPositioningSystem）.Afterhasenteredtheplanproof,thesystemteststage,startedin1989tolaunchtheofficialworksatellite,andcompletelycompletedin1994,investmentuse.TheGPSsystemspaceartiallyiscomposedbytwentyonesatel
7、lites,evenlydistributesinsixorbit,thegroundlevelis20,000Kilometers,theinclinationoforbitis55,theflatheartrateapproximatelyis0,theweekcontractis12hours,thesatellitetotheearthlaunchingtwowavebandsintell
