Argus Radar - INSTALLATION AND SETTINGS
988-10187-004 1.2
1.2.2 Blind sectors and range
To ensure full benefit from the radar, it is vitally important for the OOB that
horizontal and vertical blind sectors for the radar antennae are minimized. The
objective is to see the horizon freely through 360°, or as close to as possible.
For all radar systems and where practical, a line of sight from the radar antenna
to the bow of the ship should hit the surface of the sea at no more than 500 m
or twice the ship length, depending which value is smaller. This goes for all load
and trim conditions.
The radar antenna should be located in an elevated position to permit
maximum target visibility.
Ideal Radiation Plane
Blind sectors should be kept at a minimum, and should not occur in an area of
the horizon from right ahead to 22.5° abaft the beam to either side.
Note: Any two blind sectors separated by 3° or less should be treated as one
blind sector.
Individual blind sectors of more than 5°, or a total of blind sectors of more than
20°, should not occur in the remaining area, excluding the area in
the above subparagraph (e).
For radar installations with two radar systems, where possible, the antennas
should be placed in such a way as to minimize the blind sectors.
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