Underwater Sound Source Localization by EMD-Based Maximum Likelihood Method

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Abstract

The underwater object localization is important in defense, underwater biological and environmental applications. Localization using a passive sonar system is a challenging task. It is more challenging when the source and receivers are in the reverberant environment. Time delay estimation (TDE)-based localization is a well-known technique to localize source for last few decades. In this work, empirical mode decomposition maximum likelihood (EMD ML TDE) method is used to estimate the time delay in a reverberant environment. The sound source location is estimated by intersecting spherical surfaces from the time delay. The experimental results prove that EMD ML time delay estimation method is effective to localize a sound source in a reverberant environment.

Keywords

Empirical mode decomposition EMD ML TDE Generalized cross-correlation Localization TDE Reverberant environment SNR 
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Copyright information

© Australian Acoustical Society 2018

Authors and Affiliations

  1. 1.Mechanical Engineering DepartmentIndian Institute of TechnologyKharagpurIndia

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