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Improve the accuracy of TDOA measurement using the Teager-Kaiser Energy operator
Kandia, V.; Stylianou, Y.; Dutoit, T. (2008). Improve the accuracy of TDOA measurement using the Teager-Kaiser Energy operator, in: New Trends for Environmental Monitoring Using Passive Systems (PASSIVE 2008). pp. 6. https://hdl.handle.net/10.1109/PASSIVE.2008.4786987
In: (2008). New Trends for Environmental Monitoring Using Passive Systems (PASSIVE 2008). Institute of Electrical and Electronics Engineers (IEEE): [s.l.]. ISBN 9781424428151. 206 pp., more

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Document type: Conference paper

Keyword
    Marine

Authors  Top 
  • Kandia, V.
  • Stylianou, Y.
  • Dutoit, T.

Abstract
    In this paper we present a method to improve the accuracy of the Time Difference of Arrivals (TDOA) estimators for reducing the uncertainty in localizing sperm whales using passive acoustics. More precisely we suggest the use of Teager-Kaiser energy operator for the enhancement of recordings made by hydrophones before applying an estimator of TDOA. Using data from the Atlantic Undersea Test and Evaluation Center (AUTEC) and standard estimators for TDOA like the Generalized Cross Correlation (GCC) approaches or statistical methods based on LMS, we show that the suggested pre-processing method significantly improves the accuracy of these estimators. Simulating various Signal to Noise Ratio (SNR) conditions, we are able to show the robustness of the pre-processing approach against additive noise.

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