Title:
水中探知信号処理装置、水中探知装置、及び水中探知信号処理方法
Document Type and Number:
Japanese Patent JP6811069
Kind Code:
B2
Abstract:
An underwater detection circuit 10 comprises a memory 22 configured to store echo signals from reflections of ultrasonic waves successively transmitted. An image generating module 32 generates an interpolated image from the stored echo signals obtained from two or more successive transmissions and by increasing a weight coefficient with time of a latest echo signal from the stored echo signals. A display controlling module 33 then outputs the generated interpolated image. For a distance up to an intermediate distance of a maximum detection distance, the image module may set a weight coefficient of an echo signal N to be larger than a weight coefficient of an echo signal N-1. For a distance beyond the intermediate distance the weight coefficient of echo N-1 may be set to larger than a weight coefficient of echo signal N-2.
Inventors:
Yasushi Hiraoka
Application Number:
JP2016198699A
Publication Date:
January 13, 2021
Filing Date:
October 07, 2016
Export Citation:
Assignee:
FURUNO ELECTRIC COMPANY,LIMITED
International Classes:
G01S7/62; G01S15/96
Domestic Patent References:
| JP60202371A | ||||
| JP63045573A | ||||
| JP10290801A | ||||
| JP58044371A | ||||
| JP2012163403A |
Foreign References:
| US5390674 | ||||
| CN101390756A | ||||
| CN102207544A |
Other References:
中村智法,外4名,“超音波による3次元像のリアルタイム回転表示”,電子情報通信学会,1990年 9月25日,第1574-1584頁
Attorney, Agent or Firm:
Naomi Katsura River