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A signal model adapted ESPRIT algorithm for joint estimation of spatial and temporal parameters in vibrational analysis of cylinders

In English

Författare

Summary, in English

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

Publiceringsår

2002

Språk

Engelska

Sidor

360-364

Publikation/Tidskrift/Serie

2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings (Cat. No.02EX593)

Dokumenttyp

Konferensbidrag

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • 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

Conference name

2002 Sensor Array and Multichannel Signal Processing Workshop

Conference date

2002-08-04 - 2002-08-06

Conference place

Rosslyn, VA, United States

Status

Published

ISBN/ISSN/Övrigt

  • ISBN: 0-7803-7551-3