1. Liu, Z., Zhang, X.: Analysis of observational data of BDS-3 in-orbit test satellite. JGG Geodyn. 40(07), 741–745 (2020)
2. Han, J.: Research on high-precision BDS real-time landslide deformation monitoring technology and environmental modeling analysis. Acta Geod. et Cartogr. Sin. 49(03), 397 (2020)
3. Wu, H., Liu, Chao., Zhao, X.: BDS deformation information recognition and early warning based on improved cumulative and control chart. Geomat. Inf. Sci. Wuhan Univ. 10(02), 1–10 (2019)
4. Sardón, E., Zarraoa, N.: Estimation of total electron content using GPS data: how stable are the differential satellite and receiver instrumental biases. Radio Sci. 32(5), 1899–1910 (1997)
5. Deng, Y.: Research on Feature Extraction and Prediction Method of BDS Deformation Series. Anhui University of Science and Technology (2018)