【摘要】 针对BDS目前可提供服务的在轨卫星已经超过18颗,因此,研究非差非组合模型在BDS PPP中的应用具有重要意义。在简明阐述观测模型和参数估计基本理论的基础上,重点分析了BDS非差非组合PPP在静态、后处理动态和模拟实时动态下的定位精度。实验选取亚太区域4个MGEX跟踪站2016年第206—208天的BDS/GPS观测数据。研究表明:BDS静态E、N、U方向定位精度分别为1.8 cm、0.7 cm、3.1 cm; BDS模拟实时动态E、N、U方向定位精度分别为5.3 cm、3.9 cm、12.1 cm; BDS后处理动态与模拟实时动态E、N、U定位精度相当。更多还原

【Abstract】 There have been more than 18 satellites that BDS can currently serve on the orbit,so it is of great significance to study the application of un-differential and Un-combined model in BDS PPP. Based on the basic theory of briefly elaborating the observation model and parameter estimation,emphatically analyzing the positioning accuracy of BDS PPP with un-differential and un-combined observations in static,post processing dynamic and simulate real-time dynamic. The experiment selected 4 MGEX tracking stations in the Asia Pacific region from the 206 th to the 208 th day of BDS/GPS observation data in 2016. The average value of GPS static PPP single day has been used in the experiment as the reference value. The results show that BDS static positioning accuracy is 1.8 cm,0.7 cm,3.1 cm in the E,N,U directions,BDS real-time dynamic accuracy is 5.3 cm,3.9 cm,12.1 cm in the E,N,U directions,BDS post processing dynamic accuracy is equal to BDS real-time dynamic accuracy.更多还原