Direction-of-arrival estimation for nested acoustic vector-sensor arrays using quaternions
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 …
composed of vector sensors. Considering acoustic vector sensors (AVSs) commonly used in …
Quaternion-valued robust adaptive beamformer for electromagnetic vector-sensor arrays with worst-case constraint
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 …
vector-sensor arrays is proposed by extending the well-known worst-case constraint into the …
Polarized signal classification by complex and quaternionic multi-layer perceptrons
S Buchholz, N Le Bihan - International journal of neural systems, 2008 - World Scientific
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 …
of quaternionic random processes is proposed. Based on it, the ability of real-, complex-and …
Optimal separation of polarized signals by quaternionic neural networks
S Buchholz, N Le Bihan - 2006 14th European Signal …, 2006 - ieeexplore.ieee.org
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 …
random processes. Within this framework, the intrinsic nature of such signals is captured …
Wavefield characteristics and spatial incoherency: A comparative study from Argostoli rock‐and soil‐site dense seismic arrays
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 …
analyzed with three objectives:(1) exploring to what extent the diffracted surface waves …
[HTML][HTML] Fully quaternion-valued adaptive beamforming based on crossed-dipole arrays
X Lan, W Liu - Electronics, 2017 - mdpi.com
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 …
developed for both direction of arrival estimation and beamforming in the past. However, for …
Design of Fixed Beamformers Based on Vector‐Sensor Arrays
M Hawes, W Liu - International Journal of Antennas and …, 2015 - Wiley Online Library
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 …
account for a signal's polarisation in addition to the usual direction of arrival information …
Analysis of seismic waves crossing the Santa Clara Valley using the three-component MUSIQUE array algorithm
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 …
California. The algorithm is designed to analyse seismic signals recorded by arrays of three …
Adaptive quasiconformal kernel metric for image retrieval
DR Heisterkamp, J Peng, HK Dai - Proceedings of the 2001 …, 2001 - ieeexplore.ieee.org
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 …
the feature space associated with a kernel is used to rank relevant images. An adaptive …
Diffracted wavefield decomposition and multidimensional site effects in the Argostoli valley, Greece
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 …
associated with the generation of a substantial proportion of surface waves. As a …