A signal model adapted ESPRIT algorithm for joint estimation of spatial and temporal parameters in vibrational analysis of cylinders
(2002) 2002 Sensor Array and Multichannel Signal Processing Workshop p.360-364- Abstract
- This paper deals with the joint estimation of spatial mode shapes and temporal frequencies from transient vibrations measured by a uniform circular array of sensors encircling a cross-section of a cylinder. The geometry allows each 2D mode to be interpreted as two real planar waves impinging from mirrored directions with respect to the broadside of a uniform linear array. Algorithms for joint estimation tend, in the presence of noise, to produce signal roots that express planar waves impinging from only approximately mirrored directions. A recently published 2-D ESPRIT algorithm is modified to take advantage of the geometry, and to force the estimated planar waves to impinge from exactly mirrored directions. This reduces the estimation... (More)
- This paper deals with the joint estimation of spatial mode shapes and temporal frequencies from transient vibrations measured by a uniform circular array of sensors encircling a cross-section of a cylinder. The geometry allows each 2D mode to be interpreted as two real planar waves impinging from mirrored directions with respect to the broadside of a uniform linear array. Algorithms for joint estimation tend, in the presence of noise, to produce signal roots that express planar waves impinging from only approximately mirrored directions. A recently published 2-D ESPRIT algorithm is modified to take advantage of the geometry, and to force the estimated planar waves to impinge from exactly mirrored directions. This reduces the estimation errors; the main advantage is more easily interpreted results. Memory requirements and complexity are significantly lower for the modified algorithm, since the decomposition of a large data matrix may be broken down into several small ones (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/611384
- author
- Axmon, Joakim LU ; Hansson, M. and Sörnmo, Leif LU
- organization
- publishing date
- 2002
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- spatial mode shapes, cylinders, vibrational analysis, temporal parameters, spatial parameters, data matrix decomposition, modified algorithm, complexity reduction, memory requirements, estimation errors, mirrored directions, 2D ESPRIT algorithm, noise, signal roots, signal model adapted ESPRIT algorithm, joint estimation algorithms, temporal frequencies, transient vibrations, uniform circular sensors array, planar waves, uniform linear array
- host publication
- 2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings (Cat. No.02EX593)
- pages
- 360 - 364
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 2002 Sensor Array and Multichannel Signal Processing Workshop
- conference location
- Rosslyn, VA, United States
- conference dates
- 2002-08-04 - 2002-08-06
- external identifiers
-
- wos:000181203600074
- scopus:33645368704
- ISBN
- 0-7803-7551-3
- DOI
- 10.1109/SAM.2002.1191061
- language
- English
- LU publication?
- yes
- id
- 0ba17fbf-cbad-4970-9dfc-3ab88de754d0 (old id 611384)
- date added to LUP
- 2016-04-04 11:55:28
- date last changed
- 2022-01-29 22:36:32
@inproceedings{0ba17fbf-cbad-4970-9dfc-3ab88de754d0,
abstract = {{This paper deals with the joint estimation of spatial mode shapes and temporal frequencies from transient vibrations measured by a uniform circular array of sensors encircling a cross-section of a cylinder. The geometry allows each 2D mode to be interpreted as two real planar waves impinging from mirrored directions with respect to the broadside of a uniform linear array. Algorithms for joint estimation tend, in the presence of noise, to produce signal roots that express planar waves impinging from only approximately mirrored directions. A recently published 2-D ESPRIT algorithm is modified to take advantage of the geometry, and to force the estimated planar waves to impinge from exactly mirrored directions. This reduces the estimation errors; the main advantage is more easily interpreted results. Memory requirements and complexity are significantly lower for the modified algorithm, since the decomposition of a large data matrix may be broken down into several small ones}},
author = {{Axmon, Joakim and Hansson, M. and Sörnmo, Leif}},
booktitle = {{2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings (Cat. No.02EX593)}},
isbn = {{0-7803-7551-3}},
keywords = {{spatial mode shapes; cylinders; vibrational analysis; temporal parameters; spatial parameters; data matrix decomposition; modified algorithm; complexity reduction; memory requirements; estimation errors; mirrored directions; 2D ESPRIT algorithm; noise; signal roots; signal model adapted ESPRIT algorithm; joint estimation algorithms; temporal frequencies; transient vibrations; uniform circular sensors array; planar waves; uniform linear array}},
language = {{eng}},
pages = {{360--364}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{A signal model adapted ESPRIT algorithm for joint estimation of spatial and temporal parameters in vibrational analysis of cylinders}},
url = {{http://dx.doi.org/10.1109/SAM.2002.1191061}},
doi = {{10.1109/SAM.2002.1191061}},
year = {{2002}},
}