Skip to content

Month: June 2018

“DoA Reliability for Distributed Acoustic Tracking”

Access:

IEEE Signal Processing Letters

Supplemental Material of Mathematical Proofs

Authors:

Christine Evers, Emanuël A. P. Habets, Sharon Gannot, and Patrick A. Naylor

Abstract:

Distributed acoustic tracking estimates the trajectories of source positions using an acoustic sensor network. As it is often difficult to estimate the source-sensor range from individual nodes, the source positions have to be inferred from Direction of Arrival (DoA) estimates. Due to reverberation and noise, the sound field becomes increasingly diffuse with increasing source-sensor distance, leading to decreased DoA estimation accuracy. To distinguish between accurate and uncertain DoA estimates, this paper proposes to incorporate the Coherent-to-Diffuse Ratio as a measure of DoA reliability for single-source tracking. It is shown that the source positions therefore can be probabilistically triangulated by exploiting the spatial diversity of all nodes.