Which characteristic is typical of S-Band relative to sea clutter?

• A. Better polarization
• B. Higher transmit power
• C. Less Sea Clutter
• D. Narrower beam width

Answer: (C)

Sea clutter comes from backscatter off the rough sea surface, and how strong it is depends on how the radar wavelength compares to the wave structures on the water. Longer wavelengths (lower frequencies) see large waves as big, mirror-like facets that reflect a lot of energy back toward the radar, creating strong clutter. Shorter wavelengths, like those at S-band, interact with smaller surface features, making the sea appear smoother to the radar and reducing the coherent backscatter. So, at S-band you typically get less sea clutter than at lower-frequency bands. Other factors like polarization, transmit power, or beam width depend more on the system design than the clutter level itself.