
7. FISH FINDER OPERATIONS
7-26
False echo
When an ultrasonic pulse is transmitted, some energy leaves from each side of the
beam. This energy has the name "sidelobe". Echoes from sidelobes show on the
screen as false images like in the illustration shown below.
Mainlobe
Mainlobe
Sidelobe
Sidelobe
False image
Содержание GP-1870F
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