نتایج جستجو برای: rotational signal subspace

تعداد نتایج: 462943  

In this work, incremental sheet forming of a complicated shape is investigated experimentally. Two point incremental forming with negative and positive dies are employed for manufacturing of a complicated shape with positive and negative truncated cones. The material is aluminum alloy 3105 with a thickness of 1 mm. The effects of process parameters such as sequence of positive and negative form...

Journal: :EURASIP Journal on Wireless Communications and Networking 2010

Journal: :EURASIP Journal on Advances in Signal Processing 2006

Journal: :IEEE Trans. Signal Processing 1994
Franz Hlawatsch Werner Kozek

We consider the problems of designing a linear, time-varying filter with a specified " time-frequency (TF) pass region " and of constructing an orthonormal basis for the parsimonious expansion of signals located in a given TF support region. These problems of TF filtering and TF signal expunsion are reduced to the problem of designing a " TF subspace, " i.e., a linear signal space comprising al...

Journal: :IEEE Trans. Signal Processing 1992
Juha Karhunen Jyrki Joutsensalo

Eigenvector-based methods such as multiple signal classification (MUSIC) are currently popular in sinusoidal frequency estimation due to their high resolution. A problem with these methods is the often high cost of estimating the eigenvectors of the autocorrelation matrix spanning the signal (or noise) subspace. In this work, we propose an efficient Fourier transform-based method avoiding eigen...

1997
Peter S. K. Hansen

This thesis focus on the theory analysis and algorithm aspects of signal subspace methods used for speech enhancement in digital speech processing The problem is approached by initially performing an analysis of subspace principles applied to speech signals in order to characterize the usefulness of de ning a signal subspace for this application The theory is formulated by means of the singular...

1997
C. Sengupta J. R. Cavallaro B. Aazhang

Many signal processing algorithms are based on the computation of the eigenstructure (eigenvalues and eigenvectors) of the covariance matrix of a data matrix. Applications include: direction of arrival estimation in array processing, spectral estimation and CDMA synchronization [1]. The advantages of using the eigenvector-based methods (also called subspace based methods) are well-known. In the...

2011
SOURABH PARGAL Shefali Agarwal Harald van der Werff

DISCLAIMER This document describes work undertaken as part of a programme of study at the Faculty of Geo-Information Science and Earth Observation of the University of Twente. All views and opinions expressed therein remain the sole responsibility of the author, and do not necessarily represent those of the Faculty. i ABSTRACT This research work concentrates on understanding the concepts of hyp...

1996
Dekun Yang Stuart J. Flockton

This paper addresses the problem of extracting a time-varying signal subspace from noisy signal measurements for direction-of-arrival (DOA) estimation and tracking. A robust adaptive method for extracting the signal subspace is developed based on robust statistics. The method is more resistant to the presence of outliers than existing adaptive methods. Robust DOA estimation and tracking are ach...

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