Sea clutter
Sea clutter is used to filter the effect of random echo returns from waves or rough water near
the vessel.
When you increase Sea clutter, filtering the on-screen clutter caused by the echoes of waves
is reduced.
The system includes predefined Sea clutter settings for harbor and offshore conditions for all
radar systems except Halo, in addition to the manual mode where you can adjust the
settings. For all radar systems except Halo, you select Sea clutter modes from the menu, or by
a long press on the rotary knob. You can only adjust the Sea clutter value in manual mode.
Auto Sea Offset
(Halo Radar only)
To allow fine tuning of the Sea control while in Auto mode (Auto uses directional adaptive
clutter rejection), the Auto setting may be offset.
Rain clutter
Rain clutter is used to reduce the effect of rain, snow or other weather conditions on the
radar image.
The value should not be increased too much as this may filter out real targets.
Advanced radar options
Noise Rejection
(Broadband 4G and Halo radar only)
The Noise Rejection control sets the amount of noise filtering applied by the radar. Target
sensitivity is increased at longer ranges when this control is set to Low or High, but does
cause some loss of target discrimination.
Tip: To get maximum range performance from Broadband 4G Radar, transmit on one range
only, set the Noise Reject control to High and the threshold as low as possible. The default is
30% for less clutter on the screen. If OFF is selected for the NSS evo3, the range performance
is about equal to 3G radar. In some areas where extreme high interference may exist, try OFF
for best radar image.
Radar threshold
The threshold sets required signal strength for the lowest radar signals. Radar returns below
this limit are filtered and are not displayed.
Default value: 30%.
Target expansion
Target expansion increases the length of targets in range, making them easier to see.
Rejecting radar interference
Interference could be caused by radar signals from other radar units operating in the same
frequency band.
A high setting reduces the interference from other radars.
In order not to miss weak targets, the interference rejection should be set to low when no
interference exists.
Target separation
(Broadband 4G and Halo Radar only)
The Target separation control allows you to control the target discrimination of the radar
(separation between objects is more prominent).
68
Radar | NSS evo3 Operator Manual
To Next Page
Loading...
Need help?
General
