CNES/GRGS has implemented the capability to process GPS data in the PPP mode in its GINS software which was already capable to estimate classical network adjustment using Zero-Difference and Double-Difference observables. The PPP and "network" strategies are compared in the framework of two different classes of scientific positioning objectives: - hourly estimation of 3D crustal deformations due to sub-diurnal solid earth tides and ocean tide loading effects - daily/weekly computation of seasonal and secular vertical displacements induced by atmospheric and hydrologic loading phenomena. In addition different PPP strategies are evaluated using cross-combinations of different orbit and clock products as well as antenna phase centre corrections. The sources of discrepancies between the different sets of solutions are discussed.
AGU Fall Meeting Abstracts
- Pub Date:
- December 2007
- 1211 Non-tectonic deformation;
- 1241 Satellite geodesy: technical issues (6994;
- 1243 Space geodetic surveys;
- 1295 Integrations of techniques