3-9
CAUTION
3.2.5 Suppress Sea Clutter [SEA]
※ Also see to the section “3.2.8 Adjust to the Best Image”
Using the manual sea clutter suppression mode
Procedures 1 Adjust the sea clutter returns on the radar display by turning the [SEA]
dial until targets can be easily observed.
Turning [SEA] dial clockwise suppresses sea clutter returns.
Turning [SEA] dial counterclockwise intensifies sea clutter returns.
The sea clutter suppression function suppresses sea clutter returns by decreasing the receiving
gain on a short range.
Turning the [SEA] dial clockwise heightens the effect of sea clutter suppression. However, be
careful that excessive suppression causes low signal-strength targets such as buoys and boats
to disappear from the radar display.
When using the [AUTO SEA] function, never set the
suppression level too high canceling out all image noises from
the sea surface at close range.
Detection of not only echoes from waves but also targets such
as other ships or dangerous objects will become inhibited.
When using the [AUTO SEA] function, make sure to choose the
most appropriate image noise suppression level.
When the optimum setting level is lost, recommend to
readjust the initial setting level once.
The initial setting level is indicated on the bar-graph
with light blue on lower left of the display.
The initial setting level is changed by the each function
mode. See to section “3.9 USE FUNCTION KEY [USER]”
for details of the function modes
Present level
Initial setting level
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