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发表于 2011-7-27 11:32
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来自： 中国山东济南
关于此问题，请看下面摘自IMO /CIRC271 的描述和要求：
(a) A line of sight from the radar antenna to the bow of the ship should hit the surface of
the sea in not more than 500 m or twice the ship length, depending which value is
smaller, for all load and trim conditions.
(b) The radar antenna should be located in an elevated position to permit maximum
target visibility.
(c) Blind sectors should be kept to a minimum, and should not occur in an arc of the
horizon from right ahead to 22.5º abaft the beam to either side.
Note: Any two blind sectors separated by 3º or less should be treated as one blind sector.
(d) Individual blind sectors of more than 5º, or a total arc of blind sectors of
more than 20º, should not occur in the remaining arc, excluding the arc in the above
subparagraph (c).
(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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