Remote control sonar beam steerer

Details Remote control sonar beam steerer Remote control sonar beam steerer

1975-03-05

1976-05-04

Farley, Richard A.

Communications: electrical

Selective

Having indication or alarm

343100SA, G01S 380

Patent

active

039551725

ABSTRACT:
A beam steerer for remote positioning of the listening beams of a sonar ay which includes a beam selector switch, a steering control director, an analog switch network, and a delay line. The beam selector switch provides a remote capability of steering the hydrophone array by permitting the selection of any one of a number of listening beam pairs of the array and provides an enable signal to one of the five series-parallel combinations of voltage difference operational amplifiers, steering diodes, and voltage rectifiers of the steering control director. An enable signal from the steering control director provides a low impedance path for the signal from each of the hydrophone elements of the array through one of the analog switches for each hydrophone element and high impedance path for the remaining switches of each of the switch banks of the analog switch network. The output of each of the elements is then properly delayed before the beam is formed by summing the delayed outputs. The beam steerer accomplishes the beam steering processing in the array itself and reduces the array conductor requirements.

REFERENCES:
patent: 3676839 (1972-07-01), Wohl et al.
patent: 3846745 (1974-11-01), Hill et al.

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