Abstract:This paper focuses on the selection of the optimal combination of observations in the BDS-3 multi-frequency ambiguity resolution, and uses fuzzy clustering analysis to realize the selection of the optimal combination of three-frequency, four-frequency and five-frequency observations under different baseline lengths. The results show that as the number of frequencies increases, the number of high-quality linear combinations increases sharply; at the same time, it is more conducive to the formation of combined observations with a smaller total noise level, and it is more to the rapid fixation of the single epoch of the long baseline ambiguity, which is conducive to realization real-time precise positioning.
LI Yuzhao,YANG Weifang,YAN Haowen et al. The Optimal Linear Combination and Characteristic Analysis of BDS-3 Multi-Frequency Signals[J]. jgg, 2022, 42(6): 612-615.