| Citation: | ZHOU Zhonghua, WAN Xiang, CHENG Yan, LIU Zhizhong, WANG Wenjun, ZHANG Xueli. A Method for Estimating Differential Code Deviation of Ground-based GNSS Receiver (in Chinese). Chinese Journal of Space Science, 2022, 42(1): 170-178. DOI: 10.11728/cjss2022.01.201026096
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The difference of code pseudo-range between different frequency points of GNSS will lead to the DCB of the signal. The DCB of GNSS satellite and ground receiver can cause an accuracy error of about 25 ns, which must be corrected. Against to this problem, this paper proposes a differential code deviation estimation method for ground-based GNSS receivers. This method can obtain the DCBr of ground GNSS receiver and satellite DCBs at the same time, and effectively solve the problem of ground GNSS receiver DCBr acquisition. Through the comparison and statistical analysis of the estimated satellite DCBs and the values published by code, the results show that the RMS mean error of the difference between the two satellites DCBs (C1P2) is less than 0.3541 ns, and the estimation accuracy of ground-based GNSS receiver DCBr (C1P2) is better than 1.6105 ns.
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