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1、汽车导航系统技术解析carnavigationsystemGPSisaglobalpositioningsatellite24asafoundation,toprovideall-weatheraroundtheworldthethree-dimensionalposition,three-dimensionalvelocityinformationsuchasaradionavigationandpositioningsystem.GPSpositioningprincipleis:theuse
2、rtoreceivesatellitesignals,obtainingthedistance,clockcorrectionandatmosphericcorrectionparametersbetweenthesatelliteandtheuserfrom,todeterminethelocationoftheuserthroughdataprocessing.Now,thespecialfunctionwithinthecivilGPSpositioningprecisioncanreach
3、10mdoesGPShaslongarousedtheautomobileprofession'sattention,whentheUnitedStatesannouncedtheopeningofapartoftheGPSsystemintheGulfWar,theautomobileindustrytoseizethisopportunityimmediately,investinthedevelopmentofautomotivenavigationsystem,positioningand
4、orientationofautomobiledisplay,andquicklyputintouse.CarGPSnavigationsystemiscomposedoftwoparts:onepartisinstalledintheautomobileindustrybytheGPSreceiverandthedisplaydevice;theotherpartiscontrolledbythecomputercenter,thetwopartlinkedthroughsatellitepos
5、itioning.Thecomputercontrolcenterisauthorizedandorganizedbythevehiclemanagementdepartment,whichisresponsiblefortheobservationofdynamicmonitoringandtrafficconditionsspecifiedcarswithinthejurisdictionofanytime,sothewholecarnavigationsystematleasttwofunc
6、tions:oneistheautotrailmonitoringfunction,aslongasthecodedGPSreceivingdeviceisinstalledinthecar,thecarnomatterdrivingtotheelectronicmapanywhereonthecontrolcenterthroughthecomputerindicatesthelocationofit;anotheristhedrivingguidefunction,theownercanbee
7、lectronicmapstoragetrafficlineofeachregioninthesoftdisk,justinsertthefloppydiskinTurnerinthereceivingdevice,thescreenwillimmediatelyshowthecarseatareathelocationandthecurrenttrafficstate,whichcanbeinputtothedestination,theprecompiledforthebestroute,an
8、dcanacceptthecomputercontrolandthecommandcenter,routeanddirectionselectionofautomobiledriving. GPS是以全球24颗定位人造卫星做基础，向全球各地全天候地提供三维位置、三维速度等信息的一种无线电导航和定位系统。GPS的定位原理是：用户接收卫星发射的信号，从中获取卫星与用户之间的距离、时钟校正和大气校正等参数，通过数据处理确定用户的位置。现在，民用GPS的定位精度可达10m以内厶GPS具有
