User's Manual Part 2

Operator Manual
Raytheon Marine GmbH
Germany
R
NSC 18
RADAR
3−7
3748DOC020102Edition: 14.JAN.2005
3.2.1.2 Sea Clutter, Rain Clutter
The radar wave is reflected by waves, clouds, rain and snow. This is then dis-
played as a bright noise which clutters the Radar Video and may hide targets
When this happens, adjust GAIN, SEA (sea clutter), RAIN (rain and snow clutter)
controls to assist in the detection of targets easily.
Then adjust FTC.
Take note that ordinary visible targets cannot be seen in heavy rain and
snow (see Figure: 3−4).
Without Rain, Snow
Clutter Control
With Rain, Snow
Clutter Control
Figure: 3−4 Pattern interpretation