Color sonar system for displaying echo signals from fish

Details Color sonar system for displaying echo signals from fish Color sonar system for displaying echo signals from fish

1985-06-14

1987-08-11

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

367101, 367110, G01S 1596, G01S 762

Patent

active

046866590

ABSTRACT:
In a color sonar system especially suitable for displaying fish echo signals, high and low frequency echo image signals are displayed utilizing colors corresponding to the echo signal strength, when the signal strength differences between the simultaneously received high and low frequency echo image signals are within a preset level range, when the differences between the high and low frequency echo image signals are outside the preset level range, the selected high frequency or low frequency echo image signals are displayed utilizing colors indicative of the differences in signal strength between the corresponding high frequency and low frequency echo signals.

REFERENCES:
patent: 4290125 (1981-09-01), Honda

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