How To Suppress False Echoes; Noise Rejector; Wiper - Furuno FAR-1416 Operator's Manual

1. OPERATIONAL OVERVIEW
1.24.4

How to suppress false echoes

The echo signals can appear on the screen at positions where there is no target or
disappear when there are targets (see section 2.2). You can suppress the false
echoes.
1. Open the [MAIN MENU].
2. Select [ECHO], then press the left button.
3. Select [NEXT], then press the left button.
4. Select [ACE], then press the left button.
5. Select [SUPPRESS SECTOR], then press the left button.
6. Rotate the scrollwheel to select the sector start angle and range, then press the
left button.
7. Close the menu.
1.25

Noise Rejector

White noise can show itself on the screen as random "speckles" spread over the entire
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.
1. Open the [MAIN MENU].
2. Select [ECHO], then press the left button.
3. Select [CUSTOMIZE ECHO] then press the left button.
4. Select [NOISE REJECT], then press the left button.
5. Select [ON], then press the left button.
6. Close the menu.
1.26

Wiper

The wiper feature automatically reduces the brilliance of weak signals (noise, sea clut-
ter, rain clutter, etc.) and unwanted signals such as radar interference to clear the pic-
ture of unwanted echoes. Its effect depends on the wiper setting used and whether
each averaging is turned on or off, as described below.
Echo averaging OFF
Echo averaging ON(1/2/3) (ACE set 'ON') Condition A
Condition A: The brilliance of unwanted weak echoes, such as noise, sea clutter and
rain clutter, is reduced to clear up the picture. The difference between wiper setting [1]
and [2] is that brilliance is lowered more slowly in [2].
Condition B: Echo averaging is automatically activated when the wiper feature is
turned on, allowing you to instantly see how the picture is affected with echo averaging
turned off and turned on.
1-30
Wiper setting 1 Wiper setting 2
Condition A Condition A
Condition B