Means for improving turnaround time stability for R-C energy det

Details Means for improving turnaround time stability for R-C energy det Means for improving turnaround time stability for R-C energy det

1989-02-03

1990-04-03

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Returned signal used for control

367901, G01S 1500

Patent

active

049146408

ABSTRACT:
In combination with any signal processor system which uses an R-C integra type energy detector to recognize the presence of electrical signals such as those that are proportional to a received acoustic ping signal, the turnaround time stability improvement comprising a timing initiation signal recognition means, a validation means, first and second one-shorts for A/D conversion, and AND gate means for receiving the timing initiation signal and the validation signal and outputting a valid ping timing signal only when both are true, said valid ping timing signal in turn causing subsequent actions normally initiated by this event to occur, such as a transponder system incorporation the present invention projecting a return ping into the water.

REFERENCES:
patent: 4543577 (1985-09-01), Tachibana et al.
Stremler, Introduction to Communication Systems, 12-1982, pp. 231-232.

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