Living Planet   


An enhanced space-wise simulation for GOCE data reduction

Prof. Federica Migliaccio(1), Dr. Mirko Reguzzoni(1) , Prof. Fernando Sanso'(1) , and Prof. Carl Christian Tscherning(2)

(1) Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 MILANO, Italy
(2) University of Copenhagen, Juliane Maries Vej, 30, 2100 COPENHAGEN, Denmark


Polar gaps effects, gridding effects and noise propagation from GOCE Trr data into harmonic coefficients estimates, by the so called space-wise approach, have been extensively studied. Recently the conclusion has been drawn that a fast collocation approach must be considered superior to the simple quadrature approach, for this aim. Now several generalizations need to be implemented and integrated in order to come to a final architecture of the software. The integration of non-radial components and the effects of small rotations are presented in a parallel paper. In this work we aim at integrating the information coming from Trr, Tr and T data, in order to better understand the improvement in the low frequency band. To obtain this result, we simulated a realistic data grid on a spherical boundary, implementing a realistic (and close to optimal) grid step and including realistic polar gaps effects.


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Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry