Improved precise positioning with BDS-3 quad-frequency signals

查看全文 作　　者：Bofeng [1]Li;Zhiteng [1,2]Zhang;Weikai [1]Miao;Guang’e [1]Chen

机构地区：[1]College of Surveying and GeoInformatics,Tongji University,Shanghai 200092,China;[2]Department of Geomatics Engineering,University of Calgary,Calgary T2N 1N4,Canada

出　　处：《Satellite Navigation》索引2020年第1卷第1期,共10页

基　　金：the National Natural Science Funds of China(41874030);The Scientific and Technological Innovation Plan from Shanghai Science and Technology Committee(18511101801);The National Key Research and Development Program of China(2017YFA0603102);the Fundamental Research Funds for the Central Universities. 摘　　要：The establishment of the BeiDou global navigation satellite system(BDS-3)has been completed,and the current constellation can independently provide positioning service globally.BDS-3 satellites provide quad-frequency signals,which can benefit the ambiguity resolution(AR)and high-precision positioning.This paper discusses the benefits of quad-frequency observations,including the precision gain of multi-frequency high-precision positioning and the sophisticated choice of extra-wide-lane(EWL)or wide-lane(WL)combinations for instantaneous EWL/WL AR.Additionally,the performance of EWL real-time kinematic(ERTK)positioning that only uses EWL/WL combinations is investigated.The results indicate that the horizontal positioning errors of ERTK positioning using ionosphere-free(IF)EWL observations are approximately 0.5 m for the baseline of 27 km and 1 m for the baseline of 300 km.Furthermore,the positioning errors are reduced to the centimetre level if the IF EWL observations are smoothed by narrow-lane observations for a short period. 关键词：Quad-frequency Precise point positioning Real-time kinematic Extra-wide-lane combinations Ambiguity resolution

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Improved precise positioning with BDS-3 quad-frequency signals

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