Page - 75 - 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 Frequency [mHz] 10−7 10−6 10−5 (a) SST PSD 2010-06-01 2010-06-15 2010-06-30 0.75 1.00 1.25 1.50 1.75 (b) SST arc-wise variance factors 0.1 1 Frequency [mHz] 101 102 alongcross radial (c) POD PSD for GRACE-A 2010-06-01 2010-06-15 2010-06-30 1.0 1.5 2.0 (d) POD arc-wise variance factors for GRACE-A 0.1 1 Frequency [mHz] 101 102 alongcross radial (e) POD PSD for GRACE-B 2010-06-01 2010-06-15 2010-06-30 0.5 1.0 1.5 2.0 (f) POD arc-wise variance factors for GRACE-B Figure 6.8: Examples of estimated PSDs (left column) and arc-wise variance factors (right column (right column)) for June 2010. The shaded areas in (b), (d) and (f) mark a time period where GRACE-A was commanded to attitude hold mode, resulting in anomalously large pointing variations. 6.6 Complete solution 75