The first radar altimetry missions were dedicated to the open ocean. However, continental water surfaces (enclosed seas, lakes, rivers, flooding areas...) can also be measured by satellite altimetry. For many years now, satellite altimetry is increasingly used to monitor inland waters all over the globe, and even more with the advent of delay doppler radar altimeter embedded on the Copernicus Sentinel-3 and Sentinel6-MF missions, and the future SWOT mission based on interferometric radar imagery. For...