Analysis of Satellite Differential Code Biases and Accuracy by Fusion of BDS/GPS/GLONASS

doi:10.13474/j.cnki.11-2246.2018.0304

Abstract

Abstract: Satellite differential code deviation is an important factor affecting the navigation and positioning accuracy of users. This paper combines the data of BDS/GPS/GLONASS three system and uses the software of iGMAS analysis center of China Academy of Surveying and Mapping to solve the satellite differential code deviation. Results show that GPS P1P2 satellite differential code bias and CODE products is very consistent, the accuracy is very high, and very stable. BDS B1B3 satellite differential code bias and CODE products are basically consistent and stable. GLONASS P1P2 satellite differential code bias and CODE products are relatively consistent, high precision and stable. Comparison of three systems, GPS system P1P2 differential code bias has the highest accuracy, and is the most stable. GLONASS system P1P2 differential code bias stability and accuracy is slightly lower than the GPS. BDS system B1B3 differential code bias precision and stability is the lowest, which may be a cause of incomplete constellation.

Key words: differential code biases, fusion, BDS/GPS/GLONASS

CLC Number:

P228

WANG Jian, DANG Yamin, WANG Hu, LIU Yangyang, REN Zhengzhao. Analysis of Satellite Differential Code Biases and Accuracy by Fusion of BDS/GPS/GLONASS[J]. 测绘通报, 2018, 0(10): 6-9,21.

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