FISH FINDER AND METHOD OF DETECTING FISH SCHOOL

Title:

FISH FINDER AND METHOD OF DETECTING FISH SCHOOL

Document Type and Number:

Japanese Patent JP2004003940

Kind Code:

A

Abstract:

To provide a fish finder which solves the problem of the difficulty in simultaneous fish detection and detailed conditions of seabed sedimentary layers.

A transducer 16 transmits an ultrasonic waves into water and receives a reflected wave thereof. An A/D convertor 26 converts the reflected wave into a digital signal and stores it as detected information into a buffer memory 24. A seabed-detecting part 36 detects the seabed, based on the detected information and outputs it at a detected image-generating part 102. The detected image-generating part 102 generates a visualized detected image, based on visualization ranges which differ in the upper and lower parts with respect to a seabed-based boundary. Thereby, visualization ranges for a plurality of objects to be detected can be set simultaneously.

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Inventors:

HIRAMA AKIRA
NAKAMURA WATARU
UENO TAKASHI
GOMI TAKEMI
KIMURA KOICHI
SEKI TOSHIYUKI
WATANABE YOSHIYUKI
MIYAZAKI MASAO
HACHINOHE HIROYUKI

Application Number:

JP2002348051A

Publication Date:

January 08, 2004

Filing Date:

November 29, 2002

Export Citation:

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Assignee:

KODEN ELECTRONICS CO LTD

International Classes:

G01S15/96; G01S7/62; (IPC1-7): G01S15/96; G01S7/62

Attorney, Agent or Firm:

Sakaki Morishita

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