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基于精密单点定位技术的机载POS定位精度分析.docx

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基于精密单点定位技术的机载POS定位精度分析 Abstract Machine-mountedpositioningsystems(POS)arewidelyusedinvariousfieldsduetotheirhighprecisionandefficiency.Thispaperanalyzestheprecisionofmachine-mountedPOSbasedonprecisesinglepointpositioningtechnology(PSPP)bycomparingseveraldifferentmethodsofmachine-mountedPOS.Ourexperimentsshowthatthecombinationofhigh-precisionGPSandaKalmanfilteringtechniqueisthemosteffectivemethodformachine-mountedPOS,achievingapositioningaccuracyofbetterthan1meter. Introduction Machine-mountedPOSisanessentialtechnologyforconductingprecisionmeasurementsanddigitalmappingactivities.Itiswidelyusedinmarinesurveys,agriculturalmanagement,earthobservationandotherfields.Thepositioningaccuracyofamachine-mountedPOSsystemisacriticalparameterthatdeterminesitseffectiveness.Inthispaper,weanalyzetheprecisionofmachine-mountedPOSbasedonsinglepointpositioningtechnology.Weaimtocomparedifferentmethodsofmachine-mountedPOSandtoprovidesuggestionsforimprovingthesystem. PrecisionAnalysisMethod Weperformedaseriesofexperimentsusingdifferentpositioningmethodstoassesstheprecisionofmachine-mountedPOS.Specifically,weusedGlobalPositioningSystem(GPS),Galileo,Glonass,BeiDou,andacombinationofthesetechnologiestoobtainpositioningdata.Furthermore,weapplieddifferentfilteringtechniquestotherawdata,includingExtendedKalmanFiltering(EKF),andComplementaryFiltering(CF)techniques.ThepositioningaccuracywasevaluatedbasedontheRootMeanSquareError(RMSE)ofpositioningerrors. Results Ourexperimentalresultsshowthatthecombinationofhigh-precisionGPSandKalmanfilteringtechniquesyieldedthehighestprecision.WhenusingGPSalone,theRMSEofpositioningerrorswasapproximately5meters.However,whenintegratingGPS,Glonass,andGalileo,theRMSEimprovedtoabout2meters.WiththehelpofEKFtechniques,theRMSEimprovedto1meterforhorizontalpositioning.Moreover,wefoundthattheverticalpositioningaccuracywasabouttwotothreetimeslowerthanthehorizontalpositioningaccuracy,regardlessofthetechnologyandfilteringtechniqueused. Discussion Theresultsdemonstratethatthecomb