Seite - 115 - 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 1 10 100 All residuals– eˆ 0.1 1 10 100 Stationary contribution– eˆsst 2010-06-01 2010-06-08 2010-06-15 2010-06-22 2010-06-29 0.1 1 10 100 AOCcontribution– eˆAOC 10−9 10−8 10−7 10−6 Power asRMSover interval [m/s] Figure 8.11: Time-frequency-power diagram of combined (top panel) and disentangled (lower two panels) residuals due to stationary and non-stationary effects for June 2010. The fill colour of each small rectangle represents the power in the estimated residuals for that specific 3h interval and frequency range. The right margin displays the PSDs from fig. 8.10 corresponding to the respective diagram. The vertical grey lines mark the area of increased opening angle β, corresponding to the shaded area in fig. 8.6a. The horizontal grey lines mark the frequency band where a larger power is expected, corresponding to the shaded areas in figs. 8.8 to 8.10. 8.3 Results 115