Mode Processing and Tomography for the Philippine Sea Experiment
GEORGE MASON UNIV FAIRFAX VA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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LONG-TERM GOALS. This project is a three-year basic research effort on deep water ocean acoustics. The broad goals of this research are to understand mode scattering in the deep water channel, to characterize deep ocean noise processes, and to implement acoustic tomography using the low mode signals. OBJECTIVES. There are three major technical objectives of the proposed research. The first objective is to analyze the spatial characteristics of noise in the deep ocean using measurements from the distributed vertical line array DVLA. The second objective is to measure mode statistics for the Philippine Sea environment. Note that the DVLA deployed with the PhilSea experiment is designed to resolve the low modes excited by the moored sources. In addition to improving fundamental understanding of signal and noise processes in the deep ocean, the results of the first two research objectives will provide valuable information for signal processing performance predictions. The third objective is to implement tomographic inversions using the Philippine Sea data set. The Philippine Sea experiment is a great opportunity for mode tomography because of the capabilities of the DVLA and the shorter source ranges as compared to previous experiments. In addition to exploring the standard active acoustic tomography using the controlled sources deployed as a part of the experiment, this project will investigate passive acoustic tomography using ambient noise sources.
- Physical and Dynamic Oceanography