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Optimal sensor placement in active multistatic sonar networks

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Author
Kuhn, Tobias Uwe
Date
2014-06
Advisor
Craparo, Emily M.
Rasmussen, Craig W.
Second Reader
Karataş, Mümtaz
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Abstract
Recently the idea of deploying non-collocated sources and receivers in multistatic sensor networks (MSNs) has emerged as a promis-ing area of opportunity in sonar systems. This thesis addresses point coverage sensing problems in MSNs, where a number of points of interest have to be monitored in order to protect them from hostile underwater assets. We consider discrete cookie cutter sensors as well as various diffuse sensor models. By showing that the convex hull spanned by the targets is guaranteed to contain optimal sensor positions, we are able to limit the solution space. Using a cookie cutter sensor model, we are able to exclude even more suboptimal solutions by determining range-of-the-day, source and receiver circles. To address the nonconvex single-source placement problem, we develop the Divide Best Sector (DiBS) algorithm, which quickly provides an optimal source position assuming fixed receivers. Starting with a basic implementation of DiBS, we show how incorpo-rating advanced sector splitting methods and termination conditions further improve the algorithm. We also discuss two ways to use DiBS to find multiple source positions by placing sensors iteratively or simultaneously. Finally, we conclude that DiBS is a fast and simple algorithm that supports a wide variety of sensor models, various termination conditions, and objective functions.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/42665
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  • 1. Thesis and Dissertation Collection, all items
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