基于PANDA软件,研究了全球以及中国境内实施实时精密单点定位的模式及可行性。实际数据分析结果显示,采用IGS中心提供的超快速预报星历(Ultra—BRD),利用全球40个左右均匀分布的IGS站实时数据,PANDA软件实现了10~20cm精度的实时精密单点定位;国内仅需6~7个测站的实时观测数据,PANDA软件就可以提供全国范围精度为10~20cm的实时精密单点定位服务。
The model and possibility of real-time precise point positioning (PPP) are studied based on PANDA. The experimental results show that based on Ultra-broadcast ephemeris provided by IGS Center, with the data of 43 IGS stations around world, the accuracy of realtime global PPP can be better than 10-20 cm by PANDA. Meantime with 6-7 IGS stations in China, the accuracy of real-time PPP can reach 10-20 cm around China by PANDA.