基于卡尔曼滤波器的gps近实时定位时钟估计毕业论文外文翻译

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1、拟建中的阜阳市中国XXXX国际服装城依托中国XX国际服装城，拟建成为皖西北地区规格最高、规模最大、商务及功能最优的现代化、国际化服装专业市场，建设规模占地约128亩，建筑面积约25万平方米，项目总投资约5亿元人民币。经过1--2年的开发建设，能达到正常运营期的中国XX.XX国际服装城将吸纳全国和世界各地的经销商、代理商企业物流总部等500—1000家，预计年交易额实现68亿元人民币，每年实现税收8000—10000万元人民币，每年实现利润1.68亿元人民币，实现就业和创业人员约2万以上。外文原文Kalman-filter

2、-basedGPSclockestimationfornearreal-timepositioningAndre´Hauschild.OliverMontenbruckAbstract：Inthisarticle,analgorithmforclockoffsetestimationoftheGPSsatellitesispresented.ThealgorithmisbasedonaKalman-filterandprocessesundifferencedcodeandcarrier-phasemeasurement

3、sofaglobaltrackingnetwork.Theclockoffsetanddriftofthesatelliteclocksareestimatedalongwithtrackingstationclockoffsets,troposphericzenithpathdelayandcarrier-phaseambiguities.Thearticleprovidesabriefoverviewofalreadyexistingnearreal-timeandreal-timeclockproducts.The

4、filteralgorithmanddataprocessingschemeispresented.Finally,theaccuracyoftheorbitandclockproductisassessedwithapreciseorbitdeterminationoftheMetOpsatelliteandcomparedtoresultsgainedwithotherreal-timeproducts.Keyword:ClockestimationPreciseorbitdeterminationReal-time

5、KalmanfilterIntroductionAgrowingnumberofnearreal-timeprecisepointpositioning(PPP)applicationsraisetheneedforpreciseGPSorbitandclockproductswithshortlatency.Oneoftheseapplicationsisthepreciseorbitdetermination(POD)ofremote-sensingsatellites,whichistobeperformedsho

6、rtlyafteragroundstationpass.Theobservationsofthesatellite’sGPSreceiverareavailableimmediatelyafterthedownloadtothegroundstation.Forprocessingthesedata,theuserrequirespreciseorbitandclockdataforthecompleteGPSconstellation.TherubidiumandcesiumatomicstandardsoftheGP

7、Ssatellitesaresubjecttoclocknoiseandfrequencyvariations,whichcanoriginatefromavarietyofeffectsandarehardtoforecast.Predictionsofclockoffsetanddrift,whichareprovidedforexampleinthepredictedpartoftheultra-rapidorbitsprovidedbyIGSorthebroadcastephemerides,willdeviat

8、equicklyfromthetruevaluesbyseveraldecimetersorevenmeters.Thus,theseorbit/clock-productsbecomeunusableforPPPapplications,whereacarrier-phasebasedpositioningaccu