JMA-2343/2344 - ProNav
JMA-2343/2344 - ProNav
JMA-2343/2344 - ProNav
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(2) Precautions to be observed when installing the scanner unit on a yacht<br />
• A yacht heels on the lee side when a wind with a certain level of force blows.<br />
The following condition occurs if the heel angle exceeds 1/2 of the beam width:<br />
• On the windward side, the water surface lies outside the beam, weakening the<br />
radio wave that is incident to the target on the water surface. Consequently,<br />
the echo generated by this target is will hardly be visible on the radar screen.<br />
Conversely, on the lee side:<br />
• Since the radio wave that is incident to the water surface is stronger, strong sea<br />
clutter will develop. For yachts on which the heel is 1/2 or greater than the vertical<br />
beam width (θ) , it is recommended that the scanner unit be installed on a<br />
mounting base so that the scanner unit can be tilted on the left and right sides<br />
according to the heel angle.<br />
Beam width θ<br />
Heel angle Φ<br />
Wind<br />
Horizontal line<br />
Radar scanner unit<br />
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