There is an increasing interest in direction-of-arrival (DOA) estimation using nested arrays
composed of vector sensors. Considering acoustic vector sensors (AVSs) commonly used in …

A robust adaptive beamforming scheme based on two-component electromagnetic (EM)
vector-sensor arrays is proposed by extending the well-known worst-case constraint into the …

For polarized signals, which arise in many application fields, a statistical framework in terms
of quaternionic random processes is proposed. Based on it, the ability of real-, complex-and …

Statistical description of polarized signals is proposed in terms of proper quaternionic
random processes. Within this framework, the intrinsic nature of such signals is captured …

Recordings from two dense arrays deployed at Argostoli, Cephalonia Island, Greece, are
analyzed with three objectives:(1) exploring to what extent the diffracted surface waves …

Based on crossed-dipole antenna arrays, quaternion-valued data models have been
developed for both direction of arrival estimation and beamforming in the past. However, for …

Vector‐sensor arrays such as those composed of crossed dipole pairs are used as they can
account for a signal's polarisation in addition to the usual direction of arrival information …

We introduce the MUSIQUE algorithm and apply it to seismic wavefield recordings in
California. The algorithm is designed to analyse seismic signals recorded by arrays of three …

The paper presents a novel approach to ranking relevant images for retrieval. Distance in
the feature space associated with a kernel is used to rank relevant images. An adaptive …

Effects of seismic ground motion induced by surface geology and geometry are known to be
associated with the generation of a substantial proportion of surface waves. As a …