Analysis and application of time-varying property of BDS fractional cycle bias

doi:10.13474/j.cnki.11-2246.2021.0012

Abstract

Abstract: Fractional cyclebias can be used in ambiguity resolution of precise point positioning. Its time-varying property has an important impact on the broadcast interval and the data amount of FCB. Since the application of BDS has entered a mature stage, studying the time-varying property and its changes of BDS FCB is conducive to promoting the application of BDS PPP ambiguity resolution.Based on the generation method of single-difference FCB, this paper analyzes the time-varying property of the BDS FCB in 2017 and 2019, and improves the broadcasting interval of the narrow-lane FCB of IGSO satellites. The improved FCB is verified by the fixed-solution PPP of known reference stations.Experiments show that the stability of BDS FCB in 2019 is greatly improved compared to 2017; IGSO satellites can broadcast one group of narrow-lane FCB for one day, which reduce the data amount by 73.4%; the improved FCB can also be effectively applied to the fixed-solution BDS PPP, the convergence speed of which is 43.1% faster than the float-solution PPP.

Key words: BDS, fractional cycle bias, time-varying property, precise point positioning, ambiguity resolution

CLC Number:

P228

JIAO Bo, HAO Jinming, SHI Chunlin, LIU Weiping, LIU Jing, XIE Jiantao. Analysis and application of time-varying property of BDS fractional cycle bias[J]. Bulletin of Surveying and Mapping, 2021, 0(1): 66-70.

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