Section 5    Basic Operation of the Radar  5-12 
 
5.3.5  Rejecting sea clutter (Sea) 
 
 
Never set the sea clutter suppression function before rejecting all the sea 
clutters at close range. Detection of not only echoes from the wave and 
so on but also targets such as other ships or dangerous objects may be 
suppressed. 
When using the sea clutter suppression function, make sure to choose 
the most appropriate setting for suppression. 
 
Memo 
Remove images by sea clutter by using the sea clutter suppression function. 
When using the sea clutter suppression function, make the optimum setting, giving considerating 
to the setting described in "5.3.7 Adjusting to optimal images (Selection of observation scenes)". 
 
1  Drag the [Sea] (sea clutter adjustment) slider dial in Radar signal information, turn the 
trackball, and adjust the amount of images by sea clutter displayed on the screen so 
as to make display easy to observe. 
 
 
 
Moving the slider to the right decreases the amount of images by sea clutter. 
Moving the slider to the left increases the amount of images by sea clutter. 
The current level of sea clutter suppression is indicated by the bar and a numeric value. 
 
 
 
[Points on adjustments] 
The sea clutter suppression function decreases the amount of images by sea clutter by lowering 
reception gain at close range. When reception gain is lowered, the effectiveness of sea clutter 
suppression increases; however, if excessive effect is applied, please note that targets having weak 
signal strength such as buoys and small ships will disappear. 
   
 
[Sea] (sea clutter adjustment) slider 
Current level of sea clutter suppression