Comparison of outlier detection algorithms for GOCE gravity gradients

goce will be the first satellite ever to measure the second derivatives of the Earth’s gravitational potential in space. It will be possible to derive a high accuracy and high resolution model of the gravitational field if systematic errors and/or outliers have been removed from the data. It is necessary to detect outliers in the data pre-processing because undetected outliers may lead to erroneous results when the data are further processed, for example in the recovery of a gravity field model. Outliers in the goce gravity gradients will be searched for and detected in the gravity field analysis pre-processing step.