[en] In preparation for the operations of the ALTIUS mission, research is carried out to assess the accuracy of the SGP4 orbital propagator in predicting stellar occultation events. The quantification of the accuracy and its consequent improvement will enable reliable measurement planning and, therefore, maximize the number of measurements. To this end, predictions are made for the timing of occultations for the GOMOS instrument on-board the ENVISAT, which are then compared to actual occultation occurrences. It is found that the error is substantial but follows a trend that can be interpolated. This enables devising a method for highly accurate predictions given a sufficient number of data points. Statistically significant results for the accuracy of the propagator and a calibration method are presented. Recommendations for a measurement planning procedure of ALTIUS are formulated.
Disciplines :
Ingénierie aérospatiale
Auteur, co-auteur :
THOEMEL, Jan ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Remote Sensing
Mateshvili, Nina
Demoulin, Philippe
Vanhellemont, Filip
Pieroux, Didier
Bingen, Christine
Dekemper, Emmanuel
Franssens, Ghislain
Robert, Charles
Fussen, Didier
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
On the accuracy of the SGP4 to predict stellar occultation events using ENVISAT/GOMOS data and recommendations for the ALTIUS mission
