The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 1995
Filed:
Jul. 15, 1985
Kenneth P Geohegan, Jr, Catonsville, MD (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
Target detection apparatus wherein a pulse of acoustic energy transmitted toward a target area of the sea bottom is reflected back to two spaced-apart receiver transducers. The sum and difference of the transducer outputs are obtained with the phase relationship therebetween being detected. An acoustic return from a target above or on the bottom will cause two returns to arrive at the receiver transducers at very slightly different times and at different angles thereby resulting in a phase relationship different than a return from the bottom. An output signal indicative of a target or no target condition is provided and is normalized so that its amplitude is independent of target strength.