4:00 PM - 4:15 PM
[SCG59-09] Improvements of the GEONET real-time analysis system (REGARD) for more reliable operation
Keywords:REGARD, GNSS, PPP
The REGARD system conduct relative positioning by using reference station data and rover station data. If reference station data lacked, we can’t obtain the coordinates of all other station. So we focus on Precise Point Positioning(PPP). Real-time PPP analysis needs correction data of Ionospheric delay, Tropospheric delay, satellite clock and so on. We implement as follow system. (1) Collect real time observation data from about 100 worldwide GNSS station. (2) Estimate ephemeris and collection data by using MADOCA(Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis) developed by JAXA. (3) Conduct real time PPP analysis.
As a results of accuracy evaluation of real time PPP analysis, the accuracy is less than REGARD system. If we subtract one station results from other station(PPP-differential), the accuracy is improvement as well as REGRAD system. Therefore, real time PPP analysis system is expected to be useful for improving redundancy and robustness of REGARD system.