N-SPHERE – High-End GNSS Receiver

The N-SPHERE is a new generation GNSS receiver from Syrlinks, implementing state-of-the-art positioning and synchronization techniques to reach top-class performance for Real-Time Precise Onboard Orbit Determination (P2OD) and accurate time synchronization. It inherits from more than 10 years of Syrlinks’ experience in the GNSS domain and was jointly designed with CNES (the French Space Agency). The receiver can synchronize from multiple GNSS systems including GPS, GALILEO, BeiDou and GLONASS, with a synchronization process that is GALILEO-autonomous and requires no GPS pre-synchronization. In terms of positioning, N-SPHERE provides accuracy better than 0.5 meters thanks to a unique algorithm referenced as ‘Bolero’, developed by CNES. Its Software-Defined-Radio (SDR) core architecture brings maximum flexibility and authorizes in-flight firmware upgrade or software configuration adjustment. N-SPHERE takes part in the GOMX-5 mission organized by ESA and Gomspace A/S (to be launched in 2023), integrated within a 12U Nano/Cubesat payload to demonstrate new nanosatellite capabilities for next-generation LEO constellations. Its form factor has been carefully designed and optimized for smooth integration within Nano/CubeSats. The product design belongs to Syrlinks’ ‘New Space III’ product category, a Product Assurance subclass meeting the requirements of Nano/CubeSat missions targeting a typical 2/5-year lifetime at Low Earth Orbit with a maximum Total Ionized Radiation Dose of 15 krad.