URN |
etd-1019114-205855 |
Author |
Ssu-yu Chen |
Author's Email Address |
No Public. |
Statistics |
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Department |
Institute of Undersea Technology |
Year |
2014 |
Semester |
1 |
Degree |
Master |
Type of Document |
|
Language |
zh-TW.Big5 Chinese |
Title |
Development of chirp sonar system and Its application |
Date of Defense |
2014-11-17 |
Page Count |
99 |
Keyword |
offshore southwestern Taiwan
sub-bottom profiler
chirp sonar
reflection coefficien
seismic images
|
Abstract |
Acoustical sub-bottom profiler (Chirp sonar) is widely used as a survey tool to image sediment structure. Chirp sonar data inversion has been used to determine sediment layering and physical properties in underwater acoustics applications. Chirp sonar echoes can be used to measure acoustic reflection coefficients at normal incidence to the seabed and attenuation roll-off rates of surficial sediments. The aim of this research is to (1) develop acoustical sub-bottom profiler and (2) to estimated seabed reflection coefficient and compare with coring data. This research is to integrate acoustic transducer, amplifier, and DAQ system as a independent system for acoustic profiler. The developed prototype of the acoustical sub-bottom profiler has been used and tested in the southwestern sea off Taiwan. This tool lends itself to various tasks that include imaging fluidized mud greater 40 meters, sediment classification, marine geotechnical surveys, hazardous waste target location, geological surveys, archeological surveys, mapping clam populations, military and offshore oil applications, and full ocean depth sub-bottom imaging. |
Advisory Committee |
Chau-Chang Wang - chair
Andrea Y.Y. Chang - co-chair
Chi-Fang Chen - co-chair
Linus Y.S. Chiu - advisor
|
Files |
Indicate in-campus at 2 year and off-campus access at 3 year. |
Date of Submission |
2014-11-25 |