Abstract:In order to explore the optimal combinations for BDS long-baseline ambiguity resolution, we select two optimal combinations of extra-wide lanes and an optimal combination of narrow lanes of BDS based on fuzzy clustering analysis to jointly construct the TCAR model, and use three models of GF_TCAR, GB_TCAR and GIF_TCAR to resolve the ambiguity of the measured long baseline for BDS. The experimental results show that all three models equally solve the combination ambiguity results of extra-wide lanes. Using GF_TCAR to calculate the adjacent epoch ambiguity difference of the optimal narrow-lane combination (3,0,2) obtained by fuzzy clustering analysis method is better than that of the commonly used combination (4,2,5). When using GB_TCAR to solve IGSO satellites, the narrow-lane combination (3,0,2) is superior to the combination (4,2,5), but the results of the two narrow lanes are consistent when solving GEO and MEO satellites. The narrow-lane combination (3,0,2) calculated by GIF_TCAR is slightly inferior to the combination (4,2,5).
LI Yuzhao,YAN Haowen,YNAG Weifang et al. Ambiguity Resolution of BDS Long Baseline Based on Fuzzy Clustering Analysis Method[J]. jgg, 2021, 41(10): 1040-1044.