Cognitive GEO-LEO Dual Satellite Networks: Multibeam Sensing

The integration of cognitive radio (CR) technology within dual satellite networks presents a compelling solution for dynamic spectrum sharing. When a geostationary (GEO) satellite is the primary user, spectrum sensing can be conducted either on the ground or by a Low Earth Orbit (LEO) satellite. When utilising a LEO satellite for sensing, it becomes imperative for it to detect multiple GEO spot beams concurrently, given that a LEO footprint covers multiple GEO spot beams on the ground. A dedicated spectrum sensing platform is developed to investigate this capability, enabling synchronised sensing at two locations within Australia, which are served by two distinct GEO spot beams. This research aims to explore the feasibility and advantages of LEO-centric spectrum sensing within cognitive dual GEO-LEO satellite networks.