2. RADAR, CHART RADAR OPERATION
2-9
2.10 Noise Rejector
White noise may show itself on the screen as random "speckles" spread over the en-
tire radar image. This equipment reduces the white noise then improves the on-screen
S/N ratio by processing the weighted moving average filter for the received echoes in
the range direction.
Note: Use this function with caution. Weak target echoes may disappear from the
screen or the range resolution may worsen.
You can remove this noise as follows:
1. Open the menu then select the [1 ECHO] and [1 CUSTOMIZE ECHO] menus to
show the [CUSTOMIZE ECHO] menu.
2. Select [4 NOISE REJECT].
3. Select [OFF] or [ON] as appropriate.
4. Close the menu.
The status of the noise rejector is indicated at the top-left position, [NR: ON] or [NR:
OFF].
Noise Rejector ON Noise Rejector OFF
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