Elephant censusing via geophone arrays: a visual approach for linear arrays

Authors:
Gabriel J. Chandler;Ozgur Izmirli;Caitlin O'Connell-Rodwell;Jason Wood
Affiliations:
Department of Mathematics, Connecticut College, New London, CT;Department of Computer Science, Connecticut College, New London, CT;Department of Otolaryngology, Stanford University, Stanford, CA;The Whale Museum, Friday Harbor, WA
Venue:
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Year:
2009

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Abstract

The problem of censusing elephants via geophone recordings of their footsteps along a linear array positioned along a path leading to a watering hole is considered. We propose an intuitive and graphically motivated technique that delineates passings of herds of elephants. Additionally, a measure of dispersion of the localization estimates is proposed that correlates to the size of the passing herd. We illustrate the methods using both real data and a simulation study.