Title page for etd-0703117-123044


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URN etd-0703117-123044
Author Hsiu-pin Lin
Author's Email Address No Public.
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Department Institute of Undersea Technology
Year 2016
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The study of Acoustic Propagation in Dongsha Atoll
Date of Defense 2017-07-04
Page Count 114
Keyword
  • multipath effect
  • Doppler effect
  • Parabolic equation
  • DongSha Atoll
  • internal wave
  • Abstract Huge internal solitary waves (ISW) and steep bathymetry around DongSha Atoll in the South China Sea was expected to affect sound propagation. Internal waves, generated from the Luzon Strait due to spring tide and neap tide propagate cross the basin area and hit the east wage of Atoll. In 2016, an acoustic experiment was conducted around the atoll by deploying three acoustic and one environmental moorings for learning the channel for both mid and low frequency signals, transmitted by an integrated sonar system. The paper is aimed to study channel-estimation of passband/baseband signals using pulse compression technique and surface ambiguity function to correct the Doppler Effect. Water column perturbed by environmental parameters such as sound speed, temporal variance, sediment property and bathymetries are aimed, and its impaction to channel passband/baseband response is also studied in this paper. Furthermore, parabolic equation was also used in this paper to study two- and three- dimensional acoustic wave transmission modeling. And also discuss how internal waves affect sound propagation and acoustic energy with acoustic sources in different water layer.
    Advisory Committee
  • Hin-Kiu Mok - chair
  • Yuan-Ying ,Chang - co-chair
  • Mei-Chun ,Yuan - co-chair
  • Linus Y.S Chiu - advisor
  • Files
  • etd-0703117-123044.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2017-08-03

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