Seite - 138 - 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

−50 −25 0 −50 −25 0 0.0 0.5 1.0 1.5 −1.0 −0.5 0.0 0.5 −2 −1 0 2005 2007 2009 2011 2013 2015 −1 0 1 Oldmodel Incl. AOC WithTLS Figure 9.6: Monthly estimates for the KBR APC vectors for the old model (brown), when using AOC covariance matrices (blue), and for the TLS estimate (pink), given in the SRF. The red∆cˆ=0 line indicates no deviation from the a priori calibrated APCs. The right margin shows a scaled kernel density estimate for the distribution of the coordinate estimates. Note that the plot scales are identical for the same coordinates on GRACE-A and GRACE-B, but differ between the x, y, and z-coordinates. Chapter9 Co-Estimation of Orientation Parameters138