Title:
超音波送受信装置
Document Type and Number:
Japanese Patent JP4354736
Kind Code:
B2
Abstract:
A trawl net (2) is attached to ends of warps (4) extending from a ship (6), such as a trawl boat, in the sternward direction, and a transponder (5) to transmit a response signal is attached to an upper part of a net mouth of the trawl net (2). The ship (6) forms a transmission beam TB of a detection signal by a transducer (1) at the bottom of the ship, and performs detection in the detection range. The transponder (5) receives the detection signal, and forms a transmission beam TPB of a frequency different from that. A detection image and a position display image of the transponder are superposed and displayed on a display of a scanning sonar or are displayed side by side.
Inventors:
Yasushi Nishimori
Satoshi Okunishi
Tokuda Koji
Tokuyama Kozo
Satoshi Okunishi
Tokuda Koji
Tokuyama Kozo
Application Number:
JP2003131986A
Publication Date:
October 28, 2009
Filing Date:
May 09, 2003
Export Citation:
Assignee:
FURUNO ELECTRIC COMPANY,LIMITED
International Classes:
G01S15/96; G01S15/74; G01S15/87; G01S7/62
Domestic Patent References:
| JP63052715B1 | ||||
| JP1012220Y2 | ||||
| JP3016072Y2 |
Attorney, Agent or Firm:
Hisao Komori