ResearchonPerformanceAnalysisMethodofGlobalSatelliteNavigationSystemSignal

doi:10.3780/j.issn.1000-758X.2015.04.002

Abstract

Abstract: Sofar,computersimulationisthemainevaluationmethodforthecompatibilityperformanceofthesatellitenavigationsignals.Themodelingwasusedtosimulatethemeasuringconditionandstep，butitisimpossibletoreproducetheoperatingconditionoftherealnavigationsystem.Anyparameterchangewillleadtotheresimulation，averylargeamountofcomputationandanalysis，andlargeerrors.Basedonthesatellitenavigationreceiver，thecompatibilityofthenavigationsignalwasstudied.Firstly,themodelwasdeducedbytheratiooftheoutputsignalpowerofinstantcorrugatortothesumofthenoisepowerandtheinterferencepower，accordingtotheeffectoftheinterferencesignalonGNSSreceivercapture，carriertrackinganddataconditioning.Toobtaintheoptimalassessmentoftheinference，theequivalentcarriertonoiseratiomodelwasestablishedbyarelativelysimpleformula，basedonaspectralisolationfactor.Secondly，thepower，theantennagainandtheconstellationpowergainofthenavigationsignalswereanalyzedconcretelywhensignalarrivedatthegroundastheGPSC/Acodeself-disturbed.Finally，theattenuationtestingresultoftheequivalentcarriertonoiseratiowasshownwhentheGPSC/Acodeself-disturbed.Itprovidesreferenceforthesignaldesignofthenewsatellitenavigationsystem.

Key words: Globalsatellitenavigationsystem, Compatibility, Assessment, EquivalentCNR, Spectrumseparationcoefficient

ZHANG Jian-Jun, XUE Ming. ResearchonPerformanceAnalysisMethodofGlobalSatelliteNavigationSystemSignal[J]. Chinese Space Science and Technology, 2015, 35(4): 10-16.

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https://journal26.magtechjournal.com/kjkxjs/EN/Y2015/V35/I4/10

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ResearchonPerformanceAnalysisMethodofGlobalSatelliteNavigationSystemSignal

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