User's Manual

Table Of Contents
ED 3100 G 110 / 02 (2011-10)
Operating Instructions
A-5 RADAR Sidebar - Permanent Area
A RADAR.fm / 10.11.11
A-43
NACOS Platinum
The sea clutter suppression can also be set by means of the turning knob on the radar
keyboard.
5.2.3 Rain
The suppression of rain clutter can be set to Off or to three values: Low, Medium or High.
If the value is set to Low or Medium, the filter works with pre-set coefficients just like in manual mode,
if the value is set to High, the suppression is operated with correlative coefficients like in automatic
mode.
The anticlutter rain function has the advantage that it takes place individually for regions with widely
differing precipitation.
To check the display of very small target-echoes in a rain area, it is necessary to switch over to manual
operation.
5.2.4 Enhance
The target enhancement function is a scan-to-scan technology that helps differentiate between radar
targets and noise. It can be set to Off or to three automatic values: Low, Medium or High.
Refer to chapter 1.5 for the correct gain setting in combination with the activation of the Enhance func-
tion.
Target enhancement is used to display even very small or weak targets. For example, if a target echo is
this small that it only lights up one pixel of the screen, it could be overseen or regarded as noise or
clutter. Target enhancement makes it a little bigger, so that it is better to discover among the more
dynamic clutter or noise. With this enhanced target, the correlation filter can work much more precisely.
In the case of heavy rain, snow and hail, it can be expected that, even if the setting is
correct, radar targets which only produce weak reflections - especially targets situated
behind a strong rain front - will remain undetected. Such targets can appear suddenly
when leaving the rainy area.
When the Enhance function is running, the scan-to-scan correlation might have
the result that small, fast-moving targets like high speed crafts or Racon codes
are displayed with reduced intensity or might be fully suppressed.
Sea