Convolution Neural Networks for Localization of Near-Field Sources via Symmetric Double-Nested Array

Speaker localization for far-field and near-field wideband sources using neural networks

Compressed Symmetric Nested Arrays and Their Application for Direction-of-Arrival Estimation of Near-Field Sources

In this paper, a new sensor array geometry, called a compressed symmetric nested array (CSNA), is designed to increase the degrees of freedom in the near field. As its name suggests, a CSNA is constructed by getting rid of some elements from two identical nested arrays. The closed form expressions are also presented for the sensor locations and the largest degrees of freedom obtainable as a fun...

Passive Localization of Mixed Far-Field and Near-Field Sources without Estimating the Number of Sources

This paper presents a novel algorithm for the localization of mixed far-field sources (FFSs) and near-field sources (NFSs) without estimating the source number. Firstly, the algorithm decouples the direction-of-arrival (DOA) estimation from the range estimation by exploiting fourth-order spatial-temporal cumulants of the observed data. Based on the joint diagonalization structure of multiple sp...

Microphone Array Beamforming with Near-field Correlated Sources

Due to the traditionally high cost of large microphone arrays, the application of arrays for large room audio capture has not become widespread. However, arrays of many small omnidirectional microphones can now be efficiently developed and deployed. A single array could replace several wired and wireless microphones. The microphone would no longer have to be used for one person at a time or eve...

Localization of Near Field Radio Controlled Unintended Emitting Sources

Abstract—Locating Radio Controlled (RC) devices using their unintended emissions has a great interest considering security concerns. Weak nature of these emissions requires near field localization approach since it is hard to detect these signals in far field region of array. Instead of only angle estimation, near field localization also requires range estimation of the source which makes this ...