Journal
JOURNAL OF GEODESY
Volume 88, Issue 4, Pages 403-409Publisher
SPRINGER
DOI: 10.1007/s00190-014-0691-2
Keywords
Global gravity field model; GOCE; GPS; Gradiometry; Short arc approach; Integral equation approach
Categories
Funding
- BMBF (Bundesministerium fur Bildung und Forschung)
- BfG (Bundesanstalt fur Gewasserkun de)
Ask authors/readers for more resources
In this contribution, we describe the global GOCE-only gravity field model ITG-Goce02 derived from 7.5 months of gradiometer and orbit data. This model represents an alternative to the official ESA products as it is computed completely independently, using a different processing strategy and a separate software package. Our model is derived using the short arc approach, which allows a very effective decorrelation of the highly correlated GOCE gradiometer and orbit data noise by introducing a full empirical covariance matrix for each arc, and gives the possibility to downweight 'bad' arcs. For the processing of the orbit data we rely on the integral equation approach instead of the energy integral method, which has been applied in several other GOCE models. An evaluation against high-resolution global gravity field models shows very similar differences of our model compared to the official GOCE results published by ESA (release 2), especially to the model derived by the time-wise approach. This conclusion is confirmed by comparison of the GOCE models to GPS/levelling and altimetry data.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available