Confidence intervals of location for marine mammal calls via time-differences-of-arrival: Sensitivity analysis

Confidence intervals of location for marine mammal calls via time-differences-of-arrival: Sensitivity analysis

Confidence intervals of location (CIL) of calling marine mammals, derived from time-differences-of-arrival (TDOA) between receivers, depend on errors of TDOAs, receiver location, clocks, and sound speeds. Simulations demonstrate a time-differences-of-arrival-beamforming-locator (TDOA-BL) yields CIL...

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Bibliographic Details
Published in:JASA express letters Vol. 4; no. 2
Main Authors: Mathur, Maya, Spiesberger, John L, Pascoe, Devin
Format: Journal Article
Language:English
Published: United States 01-02-2024
Subjects:
Animals
Caniformia
Cetacea
Confidence Intervals
Sound
Online Access:Get full text
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Description
Summary:Confidence intervals of location (CIL) of calling marine mammals, derived from time-differences-of-arrival (TDOA) between receivers, depend on errors of TDOAs, receiver location, clocks, and sound speeds. Simulations demonstrate a time-differences-of-arrival-beamforming-locator (TDOA-BL) yields CIL in error by O(10-100) km for experimental scenarios because it is not designed to account for relevant errors. The errors are large and sometimes exceed the distances of detection. Another locator designed for all errors, sequential bound estimation, yields CIL always containing the true location. TDOA-BL have and are being used to understand potential effects of environmental stress on marine mammals; a use worth reconsidering.
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ISSN:2691-1191
2691-1191
DOI:10.1121/10.0024634