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Impact location estimation techniques are important components of Structural Health Monitoring systems. This paper considers impact location estimation in composite structures using acoustic emission signals arriving at a passive sensor array attached to the structure. Because composite structures are anisotropic, the wave propagation properties depend both on the direction of propagation and the...
The ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques) is proposed for estimating the DOA (Direction-Of-Arrival) of narrowband signal, which uses the rotation invariance of the received data's signal subspace to estimate the DOA. But the ESPRIT algorithm can't be directly used for the wideband signal. The ESPRIT algorithm based on K-means introduces K-means algorithm to...
Making use of the time-frequency spectra sparsity of the speech sources and the spatial and inter-relation information provided from a triangular pyramid microphone array (TPMA), the ratio of the inter-sensor phase difference (RIPD) is defined and a direct relationship between RIPD information and the direction of arrival (DOA) of each source is obtained. A novel multiple speech source localization...
Microarray experiments usually generate multiple missing values in gene expression data sets due to several reasons. In the paper, a robust method has been proposed to estimate the missing values in microarray data using biological knowledge of the genes. Missing values are imputed based on the similarity in their characteristics patterns observed among the co-regulated genes. In this approach, first...
MIMO transmission technologies have been investigated and are expected to realize the wide-band and high-speed radio communication in LTE and IMT-A systems. To put those technologies into practical use, the accurate MIMO channel is required. To estimate the propagation parameters of rays from the channel data measured by the channel sounder, the SAGE based estimation algorithms have been used. SAGE...
In previous work, it has been observed that the specular and the diffuse component are linked in the angular domain. The idea of adding a diffuse component to each specular cluster has been proposed to model the specular-diffuse channel. In this paper, an approach is proposed to treat the specular and the diffuse measurement data simultaneously, with a clustering algorithm that is applied jointly...
The steered response power with phase transform weighted (SRP-PHAT) is a robust sound source localization method based on microphone array. Multiple source localization has been implemented using SRP-PHAT with agglomerative clustering (AC). In this paper, a novel method of multiple speech source localization based on sub-band SRP is proposed. In this method, speech signal is divided into several sub-bands,...
Sound source localization is an important feature in robot audition. This work proposes a sound source number and directions estimation method by using the delay information of microphone array. An eigenstructure-based generalized cross correlation method is proposed to estimate time delay between microphones. Upon obtaining the time delay information, the sound source direction and velocity can be...
A partitioning-based placement algorithm with priori wirelength estimation called HJ-hPl is presented in this paper. We propose a new methodology to estimate proximity of wirelengths in a netlist, which is capable of estimating not only short interconnects but long interconnects accurately. We embed the wirelength estimation into the partitioning tool of our global placement, which can guide our placement...
We have investigated a technique for recognising faces invariant of facial expressions. We apply multi-linear tensor algebra, which subsumes linear algebra, to analyse and recognise 3D face surfaces. This potent framework possesses a remarkable ability to deal with the shortcomings of principle component analysis in less constrained situations. A set of vector spaces can be used to represent the variation...
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