A system for monitoring at least one feature of a surface combining Delay Doppler Complex maps obtained from a Global Navigation Satellite System component (e.g. GNSS like Galileo, GPS, Glonass and Augmentation systems, including ground pseudo-lites, or fu...

System for monitoring features like altitude, wave height or dielectric properties of the surface of preferably an ocean, a lake or the sea. The system comprises an antenna for receiving navigation signals from a satellite system like Galileo, Glonass or G...