Performance Analysis of BDS Triple-frequency and Dual-frequency Ambiguity Resolution

  The global navigation satellite system (GNSS) has entered the age of multisystem. In terms of the two short baselines, compared to BDS dual-frequenc and BDS／GPS dual-frequency,BDS triple-frequency and BDS／GPS triple-frequency are analysed in the ambiguity fixed rate, success rate and positioning accuracy.The results showed that BDS triple-frequency and BDS／GPS triple