Single mode excitation in the shallow water acoustic channel using feedback control
Citable URI
https://hdl.handle.net/1912/5454DOI
10.1575/1912/5454Abstract
The shallow water acoustic channel supports far-field propagation in a discrete set of
modes. Ocean experiments have confirmed the modal nature of acoustic propagation,
but no experiment has successfully excited only one of the suite of mid-frequency
propagating modes propagating in a coastal environment. The ability to excite a
single mode would be a powerful tool for investigating shallow water ocean processes.
A feedback control algorithm incorporating elements of adaptive estimation,
underwater acoustics, array processing and control theory to generate a high-fidelity
single mode is presented. This approach also yields a cohesive framework for evaluating
the feasibility of generating a single mode with given array geometries, noise
characteristics and source power limitations. Simulations and laboratory waveguide
experiments indicate the proposed algorithm holds promise for ocean experiments.
Description
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution June 1996
Suggested Citation
Thesis: Buck, John R., "Single mode excitation in the shallow water acoustic channel using feedback control", 1996-06, DOI:10.1575/1912/5454, https://hdl.handle.net/1912/5454Related items
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