Sea clutter and rain clutter on a marine radar differ in source and mitigation.

• A. Sea clutter are returns from waves; mitigate with sea clutter suppression and gain control
• B. Sea clutter are returns from precipitation; mitigate with sea clutter suppression
• C. Sea clutter are noise from electronics; mitigate with noise reduction
• D. Sea clutter are reflections from land; mitigate with land suppression

Answer: (B)