Underwater Acoustics and Ocean Dynamics: Proceedings of the 4th Pacific Rim Underwater Acoustics Conference

126 Pages·2016·4.62 MB·English

by  Lisheng Zhou

Lisheng Zhou · Wen Xu
Qianliu Cheng · Hangfang Zhao E ditors
Underwater
Acoustics
and Ocean
Dynamics
Proceedings of the 4th Pacific Rim
Underwater Acoustics Conference
Underwater Acoustics and Ocean Dynamics
Lisheng Zhou Wen Xu
(cid:129)
Qianliu Cheng Hangfang Zhao
(cid:129)
Editors
Underwater Acoustics
and Ocean Dynamics
fi
Proceedings of the 4th Paci c Rim
Underwater Acoustics Conference
123
Editors
LishengZhou Qianliu Cheng
HangzhouAppliedAcoustics Institute HangzhouAppliedAcoustics Institute
Hangzhou, Zhejiang Hangzhou, Zhejiang
China China
WenXu Hangfang Zhao
CollegeofInformationScience&Electronic CollegeofInformationScience&Electronic
Engineering Engineering
ZhejiangUniversity ZhejiangUniversity
Hangzhou, Zhejiang Hangzhou, Zhejiang
China China
ISBN978-981-10-2421-4 ISBN978-981-10-2422-1 (eBook)
DOI 10.1007/978-981-10-2422-1
JointlypublishedwithZhejiangUniversityPress
LibraryofCongressControlNumber:2016948114
©ZhejiangUniversityPressandSpringerScience+BusinessMediaSingapore2016
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Preface
The 4th Pacific Rim Underwater Acoustics Conference (PRUAC) was held in
Hangzhou, China during 9–11 October 2013. Thanks to all the participants, it
turnedouttobeoneofthemostexcitingconferencesaroundthePacificfocusedon
the ocean, with the theme “Underwater Acoustics and Ocean Dynamics.”
This conference was jointly hosted by Hangzhou Applied Acoustics Research
InstituteandZhejiangUniversity.ThesponsorsalsoincludedAcousticalSocietyof
China, Science and Technology on Sonar Laboratory, Acoustical Society of
America, Canadian Acoustical Association and Acoustical Society of Korea. The
objectiveofthisconferencewastoprovideaforumforactiveresearcherstodiscuss
state-of-the-artdevelopmentsinunderwateracoustics.It brought togetherscholars,
scientists, and engineers from numerous countries to exchange ideas and stimulate
future research.
Theproceedingsareacollectionofmostofthescientificpapersandreviewsthat
were presented at the 4th PRUAC conference. The volume is comprised of 16
presentedlecturescoveringavarietyoftopicsinthreesessions,includingacoustical
oceanography, underwater acoustic communication, and vector sensors and target
detection. Theselectures weremadebydistinguishedresearchersfromavarietyof
countries, including the United States, China, Canada, Korea, and Russia.
We extend our sincere gratitude to all the attendees of the conference, with
special thanks to the invited speakers, conference committee members, and those
who have provided support for the conference and proceedings.
With the PRUAC 2015 conference coming soon in Russia, we look forward to
meeting all our fellow researchers there.
Hangzhou, China Lisheng Zhou
Wen Xu
Qianliu Cheng
Hangfang Zhao
v
Organization Committee
Scientific Program Committee
Xianyi Gong, Hangzhou Applied Acoustics Research Institute, China
Renhe Zhang, Institute of Acoustics, China
Robert Spindel, University of Washington, USA
Ross Chapman, University of Victoria, Canada
Peter Dahl, University of Washington, USA
Jungyul Na, Hanyang University, Korea
Wen Xu, Zhejiang University, China
Xiaowen Cui, Hangzhou Applied Acoustics Research Institute, China
Fenghua Li, Institute of Acoustics, China
Organizing Committee
Lisheng Zhou, Co-chair, Hangzhou Applied Acoustics Research Institute, China
Wen Xu, Co-chair, Zhejiang University, China
Shuanping Du, Hangzhou Applied Acoustics Research Institute, China
Hangfang Zhao, Zhejiang University, China
Sponsors
Hangzhou Applied Acoustics Research Institute, China
Zhejiang University, China
Acoustical Society of China
vii
viii OrganizationCommittee
Science and Technology on Sonar Laboratory, China
Acoustical Society of America
Canadian Acoustical Association
Acoustical Society of Korea
Contents
Inference of Sound Attenuation in Marine Sediments
from Modal Dispersion in Shallow Water.... .... .... .... ..... .... 1
N. Ross Chapman and Juan Zeng
Counterintuitive Results in Underwater Acoustic Communications .... 11
Daniel Rouseff
Comparisons of Methods for Numerical Internal Wave Simulation
in Long-Range Acoustical Propagation.. .... .... .... .... ..... .... 19
Rex K. Andrew
Acoustic Data Assimilation: Concepts and Examples... .... ..... .... 27
Liling Jin, Wen Xu, Jiamin Huang and Jianlong Li
The Preliminary Results of a Single-Hydrophone Geoacoustic
Inversion for Data Collected at the Sea of Japan.. .... .... ..... .... 37
Pavel S. Petrov
Measurements of Ultrasound Attenuation of Suspended Particles
with Various Size Distributions .... .... .... .... .... .... ..... .... 45
Changil Lee, Jee Woong Choi and Jungyul Na
A Low Complexity Multichannel Adaptive Turbo Equalizer
for a Large Delay Spread Sparse Underwater Acoustic Channel .. .... 49
Yanbo Wu and Min Zhu
A Turbo Equalization Based on a Sparse Doubly Spread Acoustic
Channels Estimation.... .... ..... .... .... .... .... .... ..... .... 57
Zibin Yu, Hangfang Zhao, Wen Xu and Xianyi Gong
Design and Testing of Underwater Acoustic Communications
for an AUV... .... .... .... ..... .... .... .... .... .... ..... .... 63
Hongtao Zhang, Zhijie Yue, Zhe Xie and Zhongkang Wang
ix
x Contents
Research of Axis Mismatches Between Pairs of Sensitive
Elements of Underwater Acoustic Velocity Gradient Sensors ..... .... 71
Xinyi Sun, Desen Yang, Lianjin Hong, Shengguo Shi
and Hongkun Zhou
A Passive Fathometer Technique for Bottom Profiling
Using Ambient Noise.... .... ..... .... .... .... .... .... ..... .... 81
Junghun Kim, Jee Woong Choi and Jungyul Na
Target Motion Parameter Estimation for LOFARgrams
Based on Waveguide Invariants.... .... .... .... .... .... ..... .... 85
Jian Li, Guangjie Han, Defu Zhou, Kai Tang and Qingbang Han
Source Localization by Maximizing the Longitudinal
Correlation Using Waveguide Invariant Theory... .... .... ..... .... 93
Xian Zhu and Huiliang Ge
Selective Detection and Localization by Decomposition
of a Subrank Time Reversal Operator .. .... .... .... .... ..... .... 99
Chunxiao Li, Mingfei Guo and Huancai Lu
Sounds of Undersea Gas Leaks .... .... .... .... .... .... ..... .... 107
Alexey O. Maksimov, Boris A. Burov, Alexander S. Salomatin
and Denis V. Chernykh
Multi-AUV Localization for an Underwater Acoustic
Sensor Network.... .... .... ..... .... .... .... .... .... ..... .... 117
Bo Li, Yuanxin Xu and Wen Xu
Inference of Sound Attenuation in Marine
Sediments from Modal Dispersion
in Shallow Water
N. Ross Chapman and Juan Zeng
Abstract Attenuationofsoundintheseabedplaysanimportantroleinpredicting
transmission loss in shallow water waveguides. Methods to invert the attenuation
from low-frequency acoustic field data include time-frequency techniques that
make use of modal dispersion. Since modal separation improves as a sound signal
that propagates to longer ranges, most of the inversion methods based on modal
dispersion were carried out with long range data. Recently a time-warping signal
processing technique was introduced that enables high resolution of modes at rel-
atively short ranges.Time-warping involves anaxistransformationthattransforms
theoriginaltime-frequencyrelationshipofthemodestoanewdomaininwhichthe
modes are approximately tonal and are well resolved. This paper shows that the
inversion can be carried out directly in the time-warped domain, and extends the
work to estimate low-frequency seabed attenuation.
(cid:1) (cid:1)
Keywords Geoacoustic inversion Time-warping transform Seabed attenua-
(cid:1)
tion Modal dispersion
1 Introduction
Inshallowwater,itiswellknownthatthegeoacousticpropertiesoftheseabedhave
a significant impact on sound propagation at low frequencies (<1 kHz). Inversion
methods for estimation of seabed model parameters from acoustic field data have
been developed by many researchers, and benchmark exercises to compare the
inversion performance have shown that they provide realistic results for the sound
N.R.Chapman(&)
SchoolofEarthandOceanSciences,UniversityofVictoria,Victoria
BCV8P5C2,Canada
e-mail:[email protected]
J.Zeng
LaboratoryofUnderwaterEnvironment,InstituteofAcoustics,
CAS,Beijing100190,China
©ZhejiangUniversityPressandSpringerScience+BusinessMediaSingapore2016 1
L.Zhouetal.(eds.),UnderwaterAcousticsandOceanDynamics
DOI10.1007/978-981-10-2422-1_1