Notice

1. After uploading the observation files, the server automatically calculates and returns to this page directly
2. Support for standard format of RINEX file 2.0-3.02
3. Support for single-frequency and dual-frequency observations
4. The information of station and antenna are taken directly from the RINEX header file
5. Only GPS system is supported currently, If other systems needed to be processed, please contact us
6. Ephemeris files (optional, *.sp3 or *.* n)
7. The precision of calculations depends on the accuracy of ephemeris files, which can up to millimeter level
8. If the ephemeris files are not uploaded, the system will automatically match the IGS precision ephemeris files
9. If the server does not have the data of this day , it will be automatically downloaded from the IGS website, though it will be slower