Clutter Space-Time Distribution and Suppression of GEO-SBR

With the advantages of short revisit time and wide coverage, geosynchronous orbit spaceborne radar (GEO-SBR) is expected to be utilized for early warning tasks. However, GEO-SBR also encounters challenges, such as the "stop-and-go" assumption not being applicable and the significant impact of Earth’s rotation. This paper introduces the geometry under the "non-stop-and-go" assumption, analyzes the clutter space-time distribution considering the Earth’s rotation effects, and proposes a clutter suppression method based on attitude steering. Simulation results represents the clutter space-time distribution, and validates the effectiveness of the clutter suppression method.