Analysis and solution of pseudorange layering between BDS-2 and BDS-3 systems

doi:10.11947/j.AGCS.2023.20210518

Abstract

Abstract: BDS-2 and BDS-3 satellites not only have the same problem of pseudorange bias as other navigation systems, but also have the decimeter-level pseudorange layering between the two systems. In order to minimize the influence of pseudorange layering, two receivers with configurable loop parameters are selected for experimental analysis, and the influence relationship between the design of receiver loop parameter and pseudorange layering is analyzed.The results show that the pseudorange layering of B1I signal between BDS-2 and BDS-3 can be reduced from decimeter-level to centimeter-level when the correlator spacing parameter configuration value of 0.3 chip and above is selected to track the B1I signal. For B3I signal, the correlator spacing parameter of 0.6 chip and below is required for tracking. According to the research in this paper, the pseudorange layering problem between BDS-2 and BDS-3 can be significantly improved by tracking the B1/B3I signal with a reasonable correlator spacing value. At the same time, it can also reduce the relative deviation positioning accuracy between receivers. The research in this paper has reference significance for promoting the development and improvement of BeiDou navigation receivers and chips.

Key words: BDS-2, BDS-3, navigation receiver, correlator spacing, pseudorange bias, pseudorange layering

CLC Number:

P228.4

ZENG Huiyan, AI Lun, CHENG Jie, GENG Pengfei, ZHANG Ruwei, CHEN Mohan, SUN Shujie, LI Mingzhe. Analysis and solution of pseudorange layering between BDS-2 and BDS-3 systems[J]. Acta Geodaetica et Cartographica Sinica, 2023, 52(4): 596-604.

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