Active broadband acoustic method and apparatus for identifying a

Details Active broadband acoustic method and apparatus for identifying a Active broadband acoustic method and apparatus for identifying a

1993-11-01

1994-12-27

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Underwater system

367135, 367137, 367 87, G01S 1596

Patent

active

053771630

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.

REFERENCES:
patent: 5025423 (1991-06-01), Earp

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