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Time-Domain Geoacoustic Inversion via Light Bulb Source Signal Matching  

Kim Kyungseop (서울대학교 조선해양공학과)
Park Cheolsoo (한국해양연구원 해양시스템안전연구소)
Kim Seongil (국방과학연구소)
Seong Woojae (서울대학교 조선해양공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.24, no.6, 2005 , pp. 334-342 More about this Journal
Abstract
In this Paper. a time-domain geoacoustic inversion was performed using the bulb signals measured during MがU. 04 experiment conducted in the East Sea of Korea in 2004. An obiective function was defined as a direct cross-correlation between the measured and the simulated signals in time domain. The ray theory was used to model the wave propagation in time domain and optimizations were Performed using VFSA (very fast simulated annealing) algorithm. Comparison of inversion results with those from transmission loss matching (an accompanying paper in this issue of the Journal of the Acoustical Society of Korea) shows that Parameters are consistently inverted. Direct time series comparisons between the measured signals and the simulated signals are Presented based on inversion results.
Keywords
Time-domain geoacoustic inversion; bulb source signal; ray model; VFSA;
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