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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Title: Multichannel Myopic Deconvolution in Underwater Acoustic Channels
Committee:
Dr. Romberg, Advisor,
Dr. Sabra, Co-Advisor
Dr. Davenport, Chair
Dr. McClellan
Abstract:
The objective of this study is to develop new techniques for solving the multichannel blind deconvolution problem and to implement these techniques in an acoustic waveguide environment. We are revisiting this classical problem by investigating channel models and recovery methods. We will show how to use a priori information about channels to build appropriate channel models that, in turn, can be incorporated into our methods. Both linear and bilinear channel models will be investigated in our study. Our first method views solving the multichannel deconvolution problem as solving a system of bilinear equations that, in turn, can be recast as recovering a low-rank matrix from a set of linear observations. We will also further our knowledge in the classical subspace method for blind deconvolution and develop an efficient and guaranteed algorithm that will show more stability in applications. Moreover, we will investigate our channel models and methods in a multiple-source multiple-channel convolution scenario and develop a source separation framework.
