Study of Proposed SIS Monitoring Strategies for a Lunar Navigation System

The deployment of a lunar navigation satellite system will be justified by the provision of navigation services to the many planned lunar missions that will include both orbiting and surface users. In this context, system monitoring and system validation will require an innovative approach different from common GNSS terrestrial application, considering the initial absence of a ground station on the lunar surface. A trade-off will be performed between three proposed strategies for the monitoring of navigation signals broadcasted by lunar-orbiting satellites, considering the advantages and disadvantages and proposing the best strategy to verify the structure and/or content of the navigation signal.