Passive ranging sonar system

Details Passive ranging sonar system Passive ranging sonar system

1966-02-04

1991-07-23

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With beam steering, scanning, or focussing

367125, G01S 380

Patent

active

050349309

ABSTRACT:
A passive acoustic detector including a line hydrophone and apparatus coud thereto operable to utilize the energy sensed by the elements of the hydrophone during passive listening to effect scanning in depression-elevation by delaying for directivity and then combining acoustic energies sensed by the hydrophone elements and recording the combined energies on an x-y strip recorder for enhanced signal-to-noise ratio.

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patent: 3311871 (1967-03-01), Baron

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