A priori knowledge-free fast positioning approach for BeiDou receivers

Sihao Zhao; Xiaowei Cui; Mingquan Lu

doi:10.1007/s10291-016-0560-y

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arXiv · 2211.12621

A priori knowledge-free fast positioning approach for BeiDou receivers

Sihao Zhao·Xiaowei Cui·Mingquan Lu

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Abstract

A Global Navigation Satellite System (GNSS) receiver usually needs a sufficient number of full pseudorange measurements to obtain a position solution. However, it is time-consuming to acquire full pseudorange information from only the satellite broadcast signals due to the navigation data features of GNSS. In order to realize fast positioning during a cold or warm start in a GNSS receiver, the existing approaches require an initial estimation of position and time or require a number of computational steps to recover the full pseudorange information from fractional pseudoranges and then compute the position solution. The BeiDou Navigation Satellite System (BDS) has a unique constellation distribution and a fast navigation data rate for geostationary earth orbit (GEO) satellites. Taking advantage of these features, we propose a fast positioning technique for BDS receivers. It simultaneously processes the full and fractional pseudorange measurements from the BDS GEOs and non-GEOs, respectively, which is faster than processing all full measurements. This method resolves the position solution and recovers the full pseudoranges for non-GEOs simultaneously within 1 s theoretically and does not need an estimate of the initial position. Simulation and real data experiments confirm that the proposed technique completes fast positioning without a priori position and time estimation, and the positioning accuracy is identical with the conventional single-point positioning approach using full pseudorange measurements from all available satellites.

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BibTeX RIS

Sihao Zhao, Xiaowei Cui, Mingquan Lu. 2022-11-22. A priori knowledge-free fast positioning approach for BeiDou receivers. https://doi.org/10.1007/s10291-016-0560-y

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