Radarsat Constellation Mission (RCM)

The RADARSAT Constellation Mission is the Canadian Space Agency’s three-satellite C-band SAR fleet, launched together 12 June 2019, succeeding RADARSAT-1 and RADARSAT-2. The three identical spacecraft give four-day exact-revisit and daily access over Canada at 5.405 GHz, with modes from 3 m spotlight to 100 m ScanSAR and a compact-polarimetry option. For maritime use it supports ship detection, sea-ice mapping for the Canadian Ice Service, oil-spill surveillance, and coastal InSAR for ground motion. C-band penetrates cloud and works in darkness, which suits Arctic and persistently overcast waters where optical sensors fail.