介绍IGS实时试验计划的发展现状及实时精密产品恢复方法。选取BKG、ESA、GFZ和GMV四个分析中心的实时精密数据,与IGS事后精密轨道和钟差进行对比,分析结果表明实时产品轨道RTN方向精度达厘米级,钟差精度达亚纳秒级。通过PANDA软件,利用IGS实时精密轨道钟差产品对测站ALBH进行动态PPP解算,动态定位精度可达厘米级。
The current development of IGS-RTPP (International GNSS Service Real-time al-time products and data recovery are introduced. The real-time precise products from BKG Pilot Project), its re( Bundesamt flit Kar- tographie und Geod~isie), ESA (European Space Agency), GFZ (Geo Forschungs Zentrum) and GMV( Guillermo Tobias Gonzdlez), which are IGS real-time analysis centers, are chosen and analyzed. Taking the IGS final prod- ucts as a reference, the orbit can reach cm-level accuracy while the clock offset sub-nanosecond-level accuracy. The real-time orbit and clock products are taken as the input files of PANDA to do kinematic PPP( Precise Point Po- sitioning) process at ALBH station with the results showing that the kinematic PPP process can achieve cm-level ac- curacy in both horizontal and vertical direction.