Multibeam ultrasonic fish detector
An ultrasonic and fish finder technology, applied in the field of multi-beam ultrasonic fish finder, can solve the problems of difficulty in fishing with nets, increased fishery development cost, low fish finder efficiency, etc., and achieves the effect of improving spatial resolution capability
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[0029] The transducer array (2) of the invention is installed below the keel of the ship or on the side of the ship. In order to ensure the detection effect, when installing, the central axis of the transducer array (2) should be parallel to the water surface as much as possible. In consideration of reducing navigation noise (mechanical conduction noise and propeller noise), reducing or avoiding the air bubble layer, etc., the transducer array (2) should try to choose the place where the water splash is the least and the turbulence and swaying range of the ship are the smallest when the ship is sailing. , generally one-third to two-fifths away from the bow, and the draft should not exceed the depth of the keel. In order to cover a larger detection area with a beam width of 8° in the sailing direction, and to allow more preparation time for net fishing, the base array is placed at an acute angle to the horizontal plane, pointing to the direction of the ship. What DSP (10) adopt...
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