NanoSiGN – Nanosatellite for scientific interpretation of GNSS dual-frequency signals in the low Earth orbit

Abstract

NanoSiGN will be the first nanosatellite with permanent 3-axes stabilization dedicated to the scientific interpretation of GNSS (Global Navigation Satellite System) dual-frequency signals in the low Earth orbit. It will carry and operate a complex GNSS receiver and antenna system for Precise Orbit Determination (POD) and GNSS ionospheric remote sensing based on measurements with a dual-frequency GNSS receiver for space applications whose design is based on Commercial-of-the-shelf (COTS) technologies and which is therefore free of International Traffic in Arms Regulations (ITAR) limitations. The NanoSiGN design builds on the know-how of the longtime TUBSAT series and on volume- and power-saving technologies from the recent faulttolerant Bee Sat design by the TU Berlin. It is a robust design set up to be adaptable to other payloads. Despite its comparatively high volume of 350 x 350 x 350 mm(3) NanoSiGN will be ananosatellite of not more than 20 kg. It takes advantage of new and innovative technologies sized for nanosatellites such as micro-reaction wheels and a star tracker for precise attitude determination and control.