Sea clutter and rain clutter

1. What is sea clutter and rain clutter?
2. What is sea clutter?
3. What is rain clutter control?
4. What is the function of the sea clutter control?

What is sea clutter and rain clutter?

Sea clutter is produced by reflections from the sea. It is affected by wave height, wind direction and the antenna height above sea level. It may extend outward as far as 5 nautical miles. Rain clutter is produced by reflections from rain, snow or fog.

What is sea clutter?

Sea clutter refers to the signals returned from the wavy and turbulent rough sea surface. The radar returns from small targets, like submarine periscope or small boats, will be obscured by the sea clutter which makes the straightforward detection of targets, with small radar cross section, a difficult task.

What is rain clutter control?

The rain clutter control will reduce the interference on the screen due to the rain and increase the chance of seeing targets within rain showers.

What is the function of the sea clutter control?

The “anti- Sea Clutter” control reduces sensitivity near the center, in order to remove the clutter, but does not affect long distance detection. As you increase the “anti-Sea Clutter” control, the gain suppression moves outwards from the center of the display.