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Data-adaptive array interpolation for DOA estimation in correlated signal environments

Lau, Buon Kiong LU ; Viberg, Mats and Leung, Yee Hong (2005) 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) In Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing p.945-948
Abstract
Many popular direction-of-arrival (DOA) estimators rely on the fact that the array response vector of the array is Vandermonde, for example, that of a uniform linear array (ULA). Array interpolation is a preprocessing technique to transform the array response vector of a planar array of arbitrary geometry to that of a ULA over an angular sector. While good approximation within the target sector is attained with the various existing array interpolation approaches, the response of the interpolated array in the out-of-sector region is at best partially controlled. Accordingly, out-of-sector signals, especially those highly correlated with the in-sector signals, can degrade significantly the performance of DOA estimators that rely on the... (More)
Many popular direction-of-arrival (DOA) estimators rely on the fact that the array response vector of the array is Vandermonde, for example, that of a uniform linear array (ULA). Array interpolation is a preprocessing technique to transform the array response vector of a planar array of arbitrary geometry to that of a ULA over an angular sector. While good approximation within the target sector is attained with the various existing array interpolation approaches, the response of the interpolated array in the out-of-sector region is at best partially controlled. Accordingly, out-of-sector signals, especially those highly correlated with the in-sector signals, can degrade significantly the performance of DOA estimators that rely on the Vandermonde form to work correctly. Recently, we proposed an improved array interpolation approach that takes into account the array response over the full azimuth. In this paper, we develop the idea further and present a simple data-adaptive array interpolation scheme that can provide significantly better accuracy in the DOA estimates. We present examples to demonstrate the effectiveness of our proposal (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
uniform linear array, ULA, DOA estimation, correlated signal environments, data-adaptive array interpolation, Vandermonde response vector, array response vector, direction-of-arrival estimators
in
Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing
pages
945 - 948
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
external identifiers
  • WOS:000229404203236
  • Scopus:30344473422
ISBN
0-7803-8874-7
DOI
10.1109/ICASSP.2005.1416166
language
English
LU publication?
yes
id
c0cc8b29-d7fe-448c-be5e-7cf2fe21f782 (old id 615305)
date added to LUP
2007-11-25 14:59:59
date last changed
2017-01-01 07:59:39
@inproceedings{c0cc8b29-d7fe-448c-be5e-7cf2fe21f782,
  abstract     = {Many popular direction-of-arrival (DOA) estimators rely on the fact that the array response vector of the array is Vandermonde, for example, that of a uniform linear array (ULA). Array interpolation is a preprocessing technique to transform the array response vector of a planar array of arbitrary geometry to that of a ULA over an angular sector. While good approximation within the target sector is attained with the various existing array interpolation approaches, the response of the interpolated array in the out-of-sector region is at best partially controlled. Accordingly, out-of-sector signals, especially those highly correlated with the in-sector signals, can degrade significantly the performance of DOA estimators that rely on the Vandermonde form to work correctly. Recently, we proposed an improved array interpolation approach that takes into account the array response over the full azimuth. In this paper, we develop the idea further and present a simple data-adaptive array interpolation scheme that can provide significantly better accuracy in the DOA estimates. We present examples to demonstrate the effectiveness of our proposal},
  author       = {Lau, Buon Kiong and Viberg, Mats and Leung, Yee Hong},
  booktitle    = {Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing},
  isbn         = {0-7803-8874-7},
  keyword      = {uniform linear array,ULA,DOA estimation,correlated signal environments,data-adaptive array interpolation,Vandermonde response vector,array response vector,direction-of-arrival estimators},
  language     = {eng},
  pages        = {945--948},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Data-adaptive array interpolation for DOA estimation in correlated signal environments},
  url          = {http://dx.doi.org/10.1109/ICASSP.2005.1416166},
  year         = {2005},
}