Estimate of BDS satellite real-time clock offset

doi:10.13474/j.cnki.11-2246.2020.0148

Abstract

Abstract: With the rapid development of high-tech such as unmanned driving, real-time precise single point positioning has attracted more and more attention in the field of GNSS. It is of great practical significance to study the acquisition of real-time satellite clock error and the accuracy of real-time positioning. In order to study the influence of coupling BDS satellite orbit and clock error products on positioning accuracy, different precision orbit products are used to acquire satellite clock error in real-time. It studies the correlation between satellite clock offset and orbit error as well as the ability of satellite clock offset to absorb orbit error. The results show that the satellite clock offset can absorb 95% of the orbital error in radial and partial tangential error, and some extent compensate for the positioning error caused by the orbital error. Using coupled satellite orbit and clock difference products, the positioning accuracy of a single BDS system can reach decimeter-level positioning results.

Key words: BDS, real-time clock offset, orbit error, SISURE, PPP

CLC Number:

P228

RAO Pengwen, MAO Ya. Estimate of BDS satellite real-time clock offset[J]. Bulletin of Surveying and Mapping, 2020, 0(5): 69-72,100.

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