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URN	etd-1019114-205855
Author	Ssu-yu Chen
Author's Email Address	No Public.
Statistics	This thesis had been viewed 5386 times. Download 273 times.
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	etd-1019114-205855.pdf Indicate in-campus at 2 year and off-campus access at 3 year.
Date of Submission	2014-11-25

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