Seite - 91 - in Contributions to GRACE Gravity Field Recovery - Improvements in Dynamic Orbit Integration, Stochastic Modelling of the Antenna Offset Correction, and Co-Estimation of Satellite Orientations

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [h] −50 0 50 100 (a) Spatial domain for all configurations. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Time [h] −200 −100 0 100 200 (b) Spatial domain for best-fit configurations. 0.1 1 10 100 Frequency [mHz] 10−8 10−6 10−4 (c) Spectral domain for all configurations. Figure 7.5: Simulated data. In-Track coordinate differences∆ralonge between iterations in both the spatial and spectral domain after convergence. The vertical grey lines in (c) denote multiples of the orbital frequency, with the leftmost line showing one cycle per revolution. Colours denoting the configurations are the same as in fig. 7.4. 7.3 Results 91