Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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Radar ECDIS User Guide
11-6 65900012
Radar Overlay
The Radar Overlay sub-menu enables the following
settings and mode selections to be made:
•
Video Processing Controls - enables
adjustment of the Gain setting and the anti-
clutter (RAIN and SEA) settings.
•
AUTO Anti-Clutter and Enhance Video
mode.
•
Vector Mode - Relative or True
•
Trails - selection of trail type.
For a description of the vector modes, see Vector
Modes in Chapter 3, `Basic Operation of ECDIS’.
Video Processing Controls
The current video processing level is indicated by
the shaded bar adjacent to the control caption. All
the video processing levels are shown in grey
colour (non-editable) in Standby. In Transmit mode
the Gain level is shown as green.
In open sea conditions, tick the AUTO Anti-Clutter check box to suppress
RAIN and SEA clutter. This normally provides optimum detection by
adapting the amount of clutter suppression applied to the varying
characteristics of clutter returns.
•
Video GAIN
Always adjust the Gain setting while on the longer scale ratios. A
light background speckle should be present to achieve the best
target detection and long range performance. A temporary
reduction in gain can be beneficial when searching for targets in
rain or snow conditions. Video gain is independently adjustable
for Auto and Manual anti-clutter modes.
•
Anti Clutter (RAIN)
Use the Anti-Clutter RAIN control to optimise suppression of rain
clutter, i.e. balance the detection of targets within the clutter region
(under the rain) with detection of those outside the clutter region.