Performance analysis of BDS+Galileo single-epoch multi-frequency precision point positioning

doi:10.13474/j.cnki.11-2246.2024.0702

Abstract

Abstract: Precise point positioning(PPP) typically requires tens of minutes to achieve centimeter-level positioning accuracy. However,the full utilization of multi-frequency and multi-constellation observations can accelerate PPP convergence. This study analyzes the BDS+Galileo multi-frequency single-epoch PPP performance based on the data from Australian regional reference stations. The results indicate that the extra wide-lane(EWL) and wide-lane(WL) ambiguity based on multi-frequency observations can improve the resolution of narrow-lane(NL) ambiguities significantly. Compared to dual-frequency PPP with ambiguity resolution(PPP-AR),the instantaneous ambiguity fixing rate increases significantly from 27.6% to 69.2% for triple-frequency PPP-AR. And it further increases to 78.9% and 76.9% for quad-and five-frequency solutions. The instantaneous positioning accuracy in the east,north,and up directions for BDS+Galileo quad-frequency solution can achieve 7.1,7.8 and 23.9 cm,respectively.

Key words: BDS, Galileo, multi-frequency and multi-constellation, PPP-AR

CLC Number:

P228

XU Shengyi, GUO Jing, ZHAO Qile, LI Zhen, QIAO Lingna. Performance analysis of BDS+Galileo single-epoch multi-frequency precision point positioning[J]. Bulletin of Surveying and Mapping, 2024, 0(7): 6-11,94.

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