Researchontriplefrequencycarrier-phaseobservationlinearcombinationofBeiDousatellitenavigationsystem

doi:10.16708/j.cnki.1000-758X.2017.0019

Abstract

Abstract: ThemathematicalmodelofBeiDoutriple-frequencycarrier-phaselinearcombinationwasgivenbasedonBeiDousatellitenavigationsystemtriple-frequencydata,andthewavelength,ionosphericerrorandtheobservationnoiseoflinearcombinationwereanalyzedsystemmatically.Intermsofambiguityintegerpropertiesandusedtheintegerlineartransformationmethodasabasis,theoptimizationofthecombinationcoefficientwasrealizedbyMatlab.Byapplyingdifferentcombinationcoefficientstothecycle-slipdetectionbasedoncode-phase,itshowsthatthecombinedcycleslipdetectionwiththesumofthecombinationcoefficientsbeingnot0,ismorethan05weeks,andthelargerthesumofthecombinationcoefficientsis,thegreaterthefluctuationis.ByapplyingdifferentcombinationcoefficientstotheambiguityresolutionbasedonGF-CIRfortriplefrequencyobservations,itshowsthattheresidualvalueofambiguityobtainedbythecombinationofnon-zerocoefficientsbutlongwavelengthsareabout06weeks.Thecorrectambiguityfixedsolutioncanbeobtainedbytheappropriateambiguitysearchmethod,andthiskindofcoefficientscanbeusedinshortbaselineambiguityresolution.

Key words: BeiDousatellitenavigationsystem, triple-frequency, linearcombination, integerlinear-transformation, optimization

YAN Huai-Cheng, HAN Bao-Min, ZHANG Jia-Xin. Researchontriplefrequencycarrier-phaseobservationlinearcombinationofBeiDousatellitenavigationsystem[J]. Chinese Space Science and Technology, 2017, 37(1): 104-110.

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URL: https://journal26.magtechjournal.com/kjkxjs/EN/10.16708/j.cnki.1000-758X.2017.0019

https://journal26.magtechjournal.com/kjkxjs/EN/Y2017/V37/I1/104

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Researchontriplefrequencycarrier-phaseobservationlinearcombinationofBeiDousatellitenavigationsystem

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