Patrick L Simpson

US Patent:

53771630, Dec 27, 1994

Filed:

Nov 1, 1993

Appl. No.:

8/146738

Inventors:

Patrick K. Simpson - San Diego CA

International Classification:

G01S 1596

US Classification:

367131

Abstract:

The identity of an aquatic organism is determined by a signature derived from a broadband acoustic signal transmitted and received by a broadband transducer or transmitted by a an broadband acoustic transmitter and received by an array of broadband acoustic receivers. The signature is a set of classifier coefficients created from a training processing that learns to discriminate between various size/taxa of aquatic life forms using features extracted from the received broadband echoes. The signature database used for classification during operation is stored on a portable storage medium. The degree to which the signals collected from an unknown aquatic life form matches the predefined known aquatic life form is then reported to a utilizing device.