2013
DOI: 10.1121/1.4816582
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Calling depths of baleen whales from single sensor data: Development of an autocorrelation method using multipath localization

Abstract: Multipath localization techniques have not previously been applied to baleen whale vocalizations due to difficulties in application to tonal vocalizations. Here it is shown that an autocorrelation method coupled with the direct reflected time difference of arrival localization technique can successfully resolve location information. A derivation was made to model the autocorrelation of a direct signal and its overlapping reflections to illustrate that an autocorrelation may be used to extract reflection inform… Show more

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Cited by 10 publications
(7 citation statements)
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“…These data are extremely scarce for most marine mammal species. Yet, recent developments in technologies such as digital recording tags [88,[100][101][102], as well as analysis techniques for localization and tracking of individual animals using passive acoustic data [103][104][105] may help to close some of these current data gaps in the future.…”
Section: Resultsmentioning
confidence: 99%
“…These data are extremely scarce for most marine mammal species. Yet, recent developments in technologies such as digital recording tags [88,[100][101][102], as well as analysis techniques for localization and tracking of individual animals using passive acoustic data [103][104][105] may help to close some of these current data gaps in the future.…”
Section: Resultsmentioning
confidence: 99%
“…Sonobuoys with integrated GPS receivers and telemetry would also greatly improve the estimation of buoy velocity. Finally, data fusion algorithms could be used to combine position information from video-tracks, DIFAR sonobuoys, acoustic time-depth recording tags, time-differences-of-arrival of sound, and possibly multipath [25], [26] in order to obtain more accurate tracks from the existing and future data sets.…”
Section: Resultsmentioning
confidence: 99%
“…More recent work has explored how to exploit acoustic multipath arrivals to provide additional localization information. In shallow water, Bayesian statistics and autocorrelation methods involving multipath ray acoustics have been used to track walruses (Rideout et al, 2013) and baleen whales (Valtierra et al, 2013). In deep water, surfacereflected and/or refracted ray paths have been used to track sperm and beaked whales using fewer hydrophones than standard techniques (Tiemann et al, 2004;Tiemann et al, 2006;Nosal and Frazer, 2007;Mathias et al, 2013;Zimmer, 2013).…”
Section: Introductionmentioning
confidence: 99%