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2. Fishfinder - Wikipedia

   en.wikipedia.org/wiki/Fishfinder

   When the fish swims directly under the transducer, it is closer to the boat so the stronger signal shows a thicker line. As the fish swims away from the transducer, the distance increases, which shows as progressively deeper pixels. The image to the right shows a school of white bass aggressively feeding on a school of threadfin shad. Note the ...

3. Garmin - Wikipedia

   en.wikipedia.org/wiki/Garmin

   Garmin Ltd. is an American multinational technology company based in Olathe, Kansas. [3] [4] The company designs, develops, manufactures, markets, and distributes GPS-enabled products and other navigation, communication, sensor-based, and information products to the automotive, aviation, marine, outdoors, and sport markets.

4. Underwater acoustic positioning system - Wikipedia

   en.wikipedia.org/wiki/Underwater_acoustic...

   Accuracy depends on transducer spacing and mounting method. When a wider spacing is employed as when working from a large working barge or when operating from a dock or other fixed platform, the performance can be similar to LBL systems. When operating from a small boat where transducer spacing is tight, accuracy is reduced.

5. Multibeam echosounder - Wikipedia

   en.wikipedia.org/wiki/Multibeam_echosounder

   A multibeam echosounder is a device typically used by hydrographic surveyors to determine the depth of water and the nature of the seabed. Most modern systems work by transmitting a broad acoustic fan shaped pulse from a specially designed transducer across the full swathe acrosstrack with a narrow alongtrack then forming multiple receive beams (beamforming) that are much narrower in the ...

6. Killer who executed cop over pair of trendy sunglasses ... - AOL

   www.aol.com/killer-executed-cop-over-pair...

   A cop killer who shot an NYPD officer to death in 1984 over the theft of a pair of trendy eyeglass frames was released from prison Tuesday on parole, delivering a gut punch to the officer’s ...

7. Sonar - Wikipedia

   en.wikipedia.org/wiki/Sonar

   Other types of transducers include variable-reluctance (or moving-armature, or electromagnetic) transducers, where magnetic force acts on the surfaces of gaps, and moving coil (or electrodynamic) transducers, similar to conventional speakers; the latter are used in underwater sound calibration, due to their very low resonance frequencies and ...