| Citation: |
HU Zhuoming, YUAN Haijun, HE Xiufeng, ZHANG Zhetao, WANG Jin. Influence of MGEX Differential Code Bias Products on BDS-3 Pseudorange Single Point Positioning[J]. Geomatics and Information Science of Wuhan University, 2024, 49(5): 756-764. DOI: 10.13203/j.whugis20210454
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In order to study the influence of different differential code bias (DCB) products on BDS-3 pseudorange single point positioning, the BDS-3 single-frequency and dual-frequency ionospheric-free combined pseudorange single point positioning satellite-side DCB correction model was derived.
Based on two DCB products of Chinese Academy of Sciences (CAS) and Deutsches Zentrum für Luftund Raumfahrt(DLR) released by the multi-global navigation satellite system(GNSS) experiment, combined with the BDS-3 measured data from the International GNSS Service stations evenly distributed in different latitudes around the world for 7 days of B1I, B1C and B2a single frequency and B1C/B2a, B1I/B3I two commonly used ionospheric-free combined pseudorange single point positioning accuracy for comparison and analysis.
Experimental results show that in the three frequencies of B1I, B1C, and B2a and the two combinations of B1C/B2a and B1I/B3I, the positioning accuracy of CAS products after correction is better than that of DLR products as a whole. Specifically, the average of positioning accuracy has increased 3 cm, 1 cm, and 6 cm in the directions of E, N, and U,respectively.
It can be concluded that for BDS-3 pseudorange single point positioning, the positioning accuracy of CAS products after correction is generally better than that of DLR products.
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