
4RANSDUCERBEAMWIDTH
The transducer mounted to the hull of your vessel serves as both a
"speaker" when transmitting, and as a "microphone" when the echo
sound is receiving. Similar to the way a flashlight focuses light, most of
the sound from your transducer is focused downwards with a smaller
amount going out to the sides. The amount of focusing of the sound
beam is expressed as a "beamwidth".
Figure 3 - A representation of a transducer beamwidth.
Transducer
Approximation of the
sound pattern below the
transducer
This angle is the
transducers beamwidth
1/2 maximum
intensity
Maximum intensity
0RINCIPLESOFOPERATIONOFANECHOSOUNDER #HAPTER
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