Depth sounder repeater structure and method

Details Depth sounder repeater structure and method Depth sounder repeater structure and method

1979-11-01

1982-04-06

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367112, 367114, G15

Patent

active

043239927

ABSTRACT:
A depth sounder repeater providing a remote display of the depth of a body of water digitally or by meter movement, a depth alarm, a lost echo signal, and a meter scale expansion for shallow depth display in conjunction with a ship's sonar, display of "alarm depth" while setting. The depth display may be digital or analog and multiple displays are possible as required. The depth sounder repeater includes a signal processor for providing signals initiated with the main ultrasonic pulse transmission from the ship's sonar and terminated with the receipt of the first echo of the corresponding main transmitted pulses. The signal processor signals may then be used to initiate and terminate production of a train of clock pulse signals which are counted to provide a digital depth display, or alternatively the signal processor signal may be integrated in analog meter display apparatus.

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patent: 3787802 (1974-01-01), Brahman
patent: 3787803 (1974-01-01), Beebe
patent: 3789352 (1974-01-01), Forsyth

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