Navigating in Geostationary Orbit With a GNSS Receiver: A Further Analysis to In-Flight Results

Nowadays the use of GNSS Spaceborne Receiver for GEO missions is proving to be a realistic alternative solution in the Space application market. In particular in GEO missions or above the knowledge of an accurate GNSS spacecraft attitude dynamic in space became essential for supporting the space missions and application based on the high-precision and accuracy GNSS navigation (i.e. low C/N
0
). In fact, the GNSS satellites attitude model is strictly linked to the considered geometrical measurement model at the transmitter phase center location and carrier phase measurements. A complete knowledge and GNSS attitude modelling can also help future GNSS Receiver implementation for the newest moon missions in which an high sensitivity signal processing is requested. In this paper additional in-flight data analysis are shown as well as the GPS and GALILEO antenna patterns reconstruction in elevation and azimuth thanks to the GNSS yaw-steering model processing.