Miniaturized scan within a pulse sonar

Details Miniaturized scan within a pulse sonar Miniaturized scan within a pulse sonar

1980-01-04

1981-09-01

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367122, G01S 1542, G01S 384

Patent

active

042875803

ABSTRACT:
An improvement for a sonar is provided wherein the improvement includes a ne array of N listening transducer elements, each listening element being capable of receiving an acoustic signal and outputting a corresponding electrical signal. A plurality of beamformers is provided wherein each beamformer has an input and an output, the input of each beamformer receiving the output from each listening element. A switching device is interconnected between the listening elements and the beamformers for alternately switching the outputs of the listening elements to each beamformer between two modes, one mode being a predetermined order and the other mode being an inversion of the predetermined order. With this arrangement only half the normal number of beamformers is required, thereby significantly reducing the weight and size of the sonar.

REFERENCES:
patent: 3163844 (1964-12-01), Martin
patent: 4166999 (1979-09-01), Brady

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