自給気潜水装置を装着したダイバーから発生する水中呼吸音とイメージングソーナー映像

URI http://harp.lib.hiroshima-u.ac.jp/jcga/metadata/12291
File
Title
自給気潜水装置を装着したダイバーから発生する水中呼吸音とイメージングソーナー映像
Title Alternative
The Underwater Respiratory Sound and the Forward Looking Sonar Images Generated from the Diver Equipped with the Self-Contained Underwater Breathing Apparatus
Author
氏名 倉本 和興
ヨミ クラモト カズオキ
別名 Kazuoki KURAMOTO
Subject
forward looking sonar, underwater search and rescue, SCUBA, underwater respiratory sound
Abstract

When we support the underwater search and rescue activity of Japan Coast Guard (JCG) divers from behind
a surface ship by utilizing the Forward Looking Sonar (FLS), strong interference lines from the sonar head toward
the divers occasionally appear on the sonar image in response to the breathing of divers. It is considered that a
high-frequency component is included in the underwater respiratory sound of divers and is overlapped with the
carrier signal from the sonar projector and has been observed all together by the receiver consequently.
In this study, we measured the underwater respiratory sound when the diver uses the self-contained underwater
breathing apparatus (SCUBA) in the pool or in the real sea and examined what kind of frequency elements were
included in this respiratory sound. Furthermore, we discussed the mechanism how the strong interference line
comes into the sonar image and considered a method of utilization and possibility to the field services of JCG.

Journal Title
海上保安大学校研究報告, 理工学系
Volume
63
Issue
1・2号 合併号
Spage
1
Epage
6
Published Date
2021-03-25
Publisher
海上保安大学校
ISSN
0287-2951
NCID
AN10088865
Self DOI
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Sort Key
01
Set
jcga