학술논문
Passive Acoustic Tracking of Whales in 3-D
Document Type
Conference
Author
Source
ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Acoustics, Speech and Signal Processing (ICASSP), ICASSP 2023 - 2023 IEEE International Conference on. :1-5 Jun, 2023
Subject
Language
ISSN
2379-190X
Abstract
Passive acoustic monitoring (PAM) is a nonintrusive approach to studying behaviors of vocalizing marine organisms underwater that otherwise would remain unexplored. In this paper, we propose a data processing chain that can detect and track multiple whales in 3-D from passively recorded underwater acoustic signals. In particular, time-difference-of-arrival (TDOA) measurements of echolocation clicks are extracted from a volumetric hydrophone array’s acoustic data by using a noise-whitening cross-correlation. For multi-target tracking, the TDOA measurements are then processed by a Bayesian inference engine consisting of two stages that is based on the sum-product algorithm (SPA). Particle flow is embedded in the SPA to make tracking computationally feasible in the considered nonlinear and high-dimensional scenario. The capability to track multiple whales without human intervention is demonstrated in scenarios with simulated and real data.