Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

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

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.


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


  • Electrical Engineering, Electronic Engineering, Information Engineering
  • 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


2002 Sensor Array and Multichannel Signal Processing Workshop
  • ISBN: 0-7803-7551-3

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen