New phase correction maps for Jason 2 GPS processing

flavien mercier (cnes, France)

CoAuthors

Alexandre Couhert (CNES, France)

Event: 2015 Ocean Surface Topography Science Team Meeting

Session: Precision Orbit Determination

Presentation type: Type Poster

Since the beginning of Jason 2 mission, the phase correction map computed by the JPL was used for the CNES GPS orbits determination. This map was for the first Jason GPS antenna. A specific extension of the IGS GPS phase maps has been constructed for each GPS satellite model to achieve a correct phase processing.

For the Jason 2 reprocessing, we build a new map for the first antenna, and also for the second antenna, which is now in use since september 2014. These maps are estimated using the igs08 antex data file available at IGS, wich contains now the extension estimated at IGS for LEO processing.

The map definition is 2*2 degrees. They can be delivered to the users in antex format.

These two maps remove efficiently the dependencies of the residual errors in azimuth and elevation, the phase residuals are now around or below 5 mm rms.

The parametrization of the orbits used for the maps construction, and the processing method are detailed.

 

Poster show times:

RoomStart DateEnd Date
Grand Ballroom Foyer Thu, Oct 22 2015,11:00 Thu, Oct 22 2015,18:00
flavien mercier
cnes
France
flavien.mercier@cnes.fr