Sonar system for classifying submerged objects

Details Sonar system for classifying submerged objects Sonar system for classifying submerged objects

1974-08-08

1976-06-29

Farley, Richard A.

Communications: electrical

Selective

Monitoring in addition to control

340 5MP, G01S 966, G01S 762

Patent

active

039672336

ABSTRACT:
A sonar system capable of identifying submerged objects near the ocean floor is provided. Transmitting and receiving transducers are mounted on a common support including an arrangement for pivoting the transducers around a vertical axis. The signals from the receiving transducer are amplified and appropriate phase shifting is provided to form very narrow, close monitoring channels focused in the Fresnel region of the transducer. Sampling circuitry for sequentially sampling the monitoring channels provides a signal for a CRT display and a memory lens. Possible applications include the detection and identification of influence ground mines.

REFERENCES:
patent: 3144631 (1964-08-01), Lustig et al.
patent: 3585579 (1971-06-01), Dorr et al.
patent: 3742436 (1973-06-01), Jones

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