GOCE Data Analysis: Realization of the Invariants Approach in a High Performance Computing Environment
Oliver Baur, Nico Seneeuw, Jialong Cai, Matthias Roth · 2010
Adopting standard satellite gravity gradiometry data pro-cessing schemes, reference frame rotations are essen-tial to transform gravitational gradients between the gra-diometer reference frame and the local north-oriented frame. Gravitational tensor invariants, on the other hand, are independent of the gradiometer instrument orientation in space. As such, they provide an alternative method for gradiometer data analysis opposed to more conven-tional approaches. In the framework of GOCE, the in-variants representation requires linearization, full ten-sor reconstruction, stochastic model adaption, and high-performance implementation. We successfully developed and tested strategies for all these individual issues. Key words: Satellite gravity gradiometry; tensor invari-ants; gravity field recovery. 1.