A dynamic filtering scheme for carrier-based differential GPS relative navigation of formation flying satellites is described. It relies on an augmented-state Extended Kalman Filter processing double-difference GPS observables and using a non linear model of the relative dynamics. Filter performance is specifically evaluated for formations where the inter-satellite distance largely varies during the mission. The filter provides estimation accuracy ranging from the millimetre to the centimetre level as the baseline grows from a few kilometres to 200 km.
CARRIER-BASED DIFFERENTIAL GPS FILTERING APPROACHES FOR PRECISE RELATIVE POSITIONING IN FORMATION FLYING WITH HIGHLY VARIABLE INTER-SATELLITE DISTANCE / Renga, Alfredo; Grassi, Michele; A., Intelisano. - ELETTRONICO. - ESA SP-654:(2008), pp. 1-8. (Intervento presentato al convegno 3rd International Symposium on Formation Flying, Missions and Technologies tenutosi a ESA-ESTEC, Noordwijk ,The Netherlands nel 23-24 April 2008).
CARRIER-BASED DIFFERENTIAL GPS FILTERING APPROACHES FOR PRECISE RELATIVE POSITIONING IN FORMATION FLYING WITH HIGHLY VARIABLE INTER-SATELLITE DISTANCE
RENGA, ALFREDO;GRASSI, MICHELE;
2008
Abstract
A dynamic filtering scheme for carrier-based differential GPS relative navigation of formation flying satellites is described. It relies on an augmented-state Extended Kalman Filter processing double-difference GPS observables and using a non linear model of the relative dynamics. Filter performance is specifically evaluated for formations where the inter-satellite distance largely varies during the mission. The filter provides estimation accuracy ranging from the millimetre to the centimetre level as the baseline grows from a few kilometres to 200 km.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
