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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 19 of 19  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
US 2020-08-26
13:50
Online Online A study of sound velocity profile acquisition method using Doppler shift
Masato Yoshiguchi, Hanako Ogasawara, Kazuyoshi Mori (NDA) US2020-22
Sound speed distribution, which is important to calculate sound propagation in the ocean, is currently estimated from a ... [more] US2020-22
pp.11-15
US 2019-08-28
14:55
Tokyo   Study of acoustic propaties for the surface sediment acoustic measurement at the Ariake Sea
Hanako Ogasawara, Masato Yoshiguchi, Kazuyoshi Mori (NDA) US2019-41
 [more] US2019-41
pp.23-26
US 2017-12-11
15:30
Tokyo   Visualization of Cavitation Bubble and Ultrasonic Pulse Transmission Generated by Snapping Shrimp
Kazuyoshi Mori, Hiroyuki Kawahara, Hanako Ogasawara (NDA), Kouichi Fujimura (Katokoken) US2017-78
It is important to survey biological transient noises produced by snapping shrimp, which may be the main noise sources i... [more] US2017-78
pp.21-24
US 2017-08-31
11:15
Kanagawa   Fundamental Study on the Effect of Acoustic Matching Layer on Convex Acoustic Lens for Equipping in Small AUV's Bow
Hiroyuki Kawahara, Hanako Ogasawara, Kazuyoshi Mori (NDA) US2017-49
Recently, we designed a convex underwater acoustic lens for equipping in small AUV’s bow, and calculated its converged s... [more] US2017-49
pp.15-18
US 2016-08-25
15:30
Tokyo Tokyo Institute of Technology, Ookayama Campus Statistical analysis of transient noise observed at Hashirimizu Port in Yokosuka
Keiichi Shikata, Kazuyoshi Mori, Hanako Ogasawara (NDA) US2016-41
In coastal water, ambient noise is dominated by snapping shrimp, and it is necessary to know its characteristics to desi... [more] US2016-41
pp.19-22
US 2015-08-24
16:10
Tokyo Tokyo Institute of Technology, Ookayama Campus Influence of Noise Spatial Distribution on Ambient Noise Imaging with Acoustic Lens -- Preliminary Data Analysis for the 2nd Sea Trial in November of 2014 --
Kazuyoshi Mori, Hanako Ogasawara (NDA), Takenobu Tsuchiya, Nobuyuki Endoh (Kanagawa Univ.) US2015-44
Recently, we built a 2nd prototype ambient noise imaging (ANI) system using the acoustic lens having a 2-D receiver arra... [more] US2015-44
pp.37-41
US 2014-08-25
15:45
Tokyo Tokyo Institute of Technology, Ookayama Campus Measurement of directivity and source level variation for sound produced by snapping shrimp gathered in Hashirimizu Port at Yokosuka
Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA) US2014-39
It is important to survey biological transient noises produced by snapping shrimp, which may be the main noise sources i... [more] US2014-39
pp.35-38
US 2014-08-25
16:10
Tokyo Tokyo Institute of Technology, Ookayama Campus Ocean environmental monitoring by AUV for sound propagation analysis
Hanako Ogasawara, Kazuyoshi Mori, Toshiaki Nakamura (NDA) US2014-40
Authors measured ocean environment with Autonomous Underwater Vehicle (AUV). The environment at the coastal area changes... [more] US2014-40
pp.39-42
US 2014-08-25
16:35
Tokyo Tokyo Institute of Technology, Ookayama Campus Adaptive Impedance Matching of Piezoelectric Transducer for Underwater Acoustic Communication
Yosuke Saito, Tadashi Ebihara, Koichi Mizutani, Naoto Wakatsuki (Univ of Tsukuba), Hanako Ogasawara (NDA) US2014-41
Underwater sensor is one of the most important components to achieve underwater measurement or to establish underwater s... [more] US2014-41
pp.43-48
US 2013-11-23
15:35
Kyoto Kambaikan, Doshisha Univ. Overview of the last five years studies for ambient noise imaging with acoustic lens
Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA), Takenobu Tsuchiya, Nobuyuki Endoh (Kanagawa Univ.) US2013-72
An aspherical lens has been designed and fabricated to develop a prototype system for ambient noise imaging which is the... [more] US2013-72
pp.25-30
US 2013-11-23
16:05
Kyoto Kambaikan, Doshisha Univ. The analysis of sound propagation of very shallow area at Hashirimizu Port
Hanako Ogasawara, Kazuyoshi Mori, Toshiaki Nakamura (National Defense Academy) US2013-73
 [more] US2013-73
pp.31-35
US 2011-08-30
13:30
Ibaraki NRIFE Tidal Effect of Sound Propagation Experiment in Very Shallow Water
Seiji Kamimura (N.D.A.), Yuji Sato (Grad. School, Univ. of Tsukuba), Hanako Ogasawara, Kazuyoshi Mori, Toshiaki Nakamura (N.D.A.) US2011-41
 [more] US2011-41
pp.1-4
US 2011-08-30
13:55
Ibaraki NRIFE A Basic Study of Classification Method of Target Scattering for Ambient Noise Imaging with Acoustic Lens
Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA), Takenobu Tsuchiya, Nobuyuki Endoh (Kanagawa Univ.) US2011-42
We designed and made an aspherical lens with an aperture diameter of 1.0 m for Ambient Noise Imaging. It was expected th... [more] US2011-42
pp.5-10
US 2010-08-30
14:00
Tokyo   Source Localization of Impulsive Biological Noise at Hashirimizu Port in Yokosuka.
Haruki Kada, Keisuke Awaji, Yukihiro Niisato, Seiji Kamimura, Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA) US2010-44
In this study, we observed impulsive biological noise with a pair of tetrahedron hydrophone array in May 2010. Our aim w... [more] US2010-44
pp.13-16
US 2009-08-28
14:55
Tokyo   A Basic Study of Utilization of Time Reversal Process for Ambient Noise Imaging Using Acoustic Lens
Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA), Takenobu Tsuchiya, Nobuyuki Endoh (Kanagawa Univ.) US2009-33
In ambient noise imaging (ANI), each pixel of a target image is mapped by either monochrome or pseudo-color to represent... [more] US2009-33
pp.21-26
US 2009-08-28
15:20
Tokyo   Analysis of Shallow Water Sound Propagation in Hashirimizu Port
Hanako Ogasawara, Kazuyoshi Mori, Toshiaki Nakamura (National Defense Academy) US2009-34
 [more] US2009-34
pp.27-32
US 2008-08-29
14:30
Tokyo Jamstec A Basic Study of Focusing Characteristics of Acoustic Aplanatic Lens for Ambient Noise Imaging
Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA), Yuji Sato (Univ. Tsukuba), Takenobu Tsuchiya, Tetsuo Anada, Nobuyuki Endoh (Kanagawa Univ.) US2008-28
Much attention has been paid to the new idea of detecting objects by using ocean ambient noise. This concept is called a... [more] US2008-28
pp.11-16
US 2007-08-24
11:00
Kanagawa The Port and Airport Research Institute Fluctuations of Sound Propagation at Hashirimizu Port
Hanako Ogasawara, Kazuyoshi Mori, Toshiaki Nakamura (National Defense Academy), Koichi Mizutani (Univ. Tsukuba) US2007-29
Acoustical monitoring method could monitor wide area such as ocean because it can spatially measure the measurement obje... [more] US2007-29
pp.7-12
US 2007-08-24
14:10
Kanagawa The Port and Airport Research Institute Evaluation of Directional Resolution of Spherical Biconcave Acoustic Lens for Ambient Noise Imaging on Small Scale Trial
Kazuyoshi Mori, Hanako Ogasawara, Toshiaki Nakamura (NDA) US2007-32
Much attention has been paid to the new idea of detecting objects by using ocean ambient noise. This concept is called a... [more] US2007-32
pp.25-30
 Results 1 - 19 of 19  /   
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