Sonar ranging system

Details Sonar ranging system Sonar ranging system

1967-10-24

1980-12-23

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367126, G01S 380

Patent

active

042414318

ABSTRACT:
A passive ranging system is disclosed wherein the transducer array has its eam pattern modulated so as to match the arrival angles of the different wave fronts arriving at the array from various target distances. The beams are formed by orientating a multiplicity of readout arms at appropriate angles with respect to a recording medium which has the individual signals detected by each transducer of the array recorded thereon in different horizontal tracks. The readout arms thus simultaneously scan all of the signals associated with the arrival angles for a particular range and produce a signal whose amplitude is a measure of the probability of a target at this range.

REFERENCES:
patent: 2897351 (1959-07-01), Melton

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