Abstract
The work flow and key technology of wide area real-time differential GPS proto type system are introduced. Based on nearly 50 IGS global Stations' real-time observation data at 1 second interval, real time satellite clock offset is continuously calculated second by second. On the mean time, real-time orbit corrections and clock corrections to Broadcast Ephemeris are calculated and sent to users by wireless communication network. The users with double frequency receiver can calculate the real-time position by the RT-PPP (Real-time Precise point positioning) methods. Initial results of tests show real-time clock corrections' accuracy is better than 0. 2 ns; real-time positioning RMS are better than 10 cm and 20 cm in the horizontal and vertical direction, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 1271-1274 |
| Number of pages | 4 |
| Journal | Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University |
| Volume | 34 |
| Issue number | 11 |
| State | Published - Nov 2009 |
| Externally published | Yes |
Keywords
- IGS real-time data stream
- Real-time satellite clock offset determination
- Realtime precise point positioning
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