@article{Tiemann_2008, title={Three-dimensional single-hydrophone tracking of a sperm whale demonstrated using workshop data from the bahamas}, volume={36}, url={https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1993}, abstractNote={A passive acoustic localization method for tracking the movement of a clicking sperm whale in three-dimensions using data from just one hydrophone is demonstrated using data made available for the 3<sup>rd</sup> International Workshop on Detection and Classification of Marine Mammals. One recording contains sperm whale clicks recorded on a bottom-mounted hydrophone on a steep slope of the Navy’s AUTEC test range. When the direct-path acoustic ray arrivals from several clicks are time-aligned, persistent associated multipath arrivals of reflected ray paths can be identified for each click event and used for localization. Although the use of multipath arrival information is a standard procedure for range-depth tracking, a three-dimensional estimate of whale position can be obtained from the same multipath information with knowledge of an azimuthally-dependent environment relative to the receiver. In this case, azimuthal distinction arises from varied bathymetry. Multipath arrival patterns are matched to unique range-, depth-, and azimuth-dependent modeled arrival patterns to make an estimate of whale location. A threedimensional whale track in range, depth, and bearing from the fixed hydrophone is presented.}, number={1}, journal={Canadian Acoustics}, author={Tiemann, Christopher O.}, year={2008}, month={Mar.}, pages={67–73} }