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Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities

Publication ,  Journal Article
Richmond, CD
Published in: IEEE Signal Processing Letters
December 1, 1998

The sample covariance based (SCB) minimum variance distortionless response (MVDR) beamformer has desirable properties under ideal homogeneous data conditions with perfect look. Such properties include maximum-likelihood optimality yielding an unbiased asymptotically efficient estimate of the signal parameter. When target array response mismatch exists and inhomogeneities are present, however, its performance can degrade considerably. Exact means and variances are given for the SCB MVDR beamformer output accounting simultaneously for finite sample support, imperfect look, and inhomogeneities demonstrating biased signal estimates and potentially extreme vulnuerability to undernulled interference and surprise jammers.

Duke Scholars

Published In

IEEE Signal Processing Letters

DOI

ISSN

1070-9908

Publication Date

December 1, 1998

Volume

5

Issue

12

Start / End Page

325 / 327

Related Subject Headings

  • Networking & Telecommunications
  • 4603 Computer vision and multimedia computation
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0801 Artificial Intelligence and Image Processing
 

Citation

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Richmond, C. D. (1998). Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities. IEEE Signal Processing Letters, 5(12), 325–327. https://doi.org/10.1109/97.735426
Richmond, C. D. “Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities.” IEEE Signal Processing Letters 5, no. 12 (December 1, 1998): 325–27. https://doi.org/10.1109/97.735426.
Richmond CD. Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities. IEEE Signal Processing Letters. 1998 Dec 1;5(12):325–7.
Richmond, C. D. “Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities.” IEEE Signal Processing Letters, vol. 5, no. 12, Dec. 1998, pp. 325–27. Scopus, doi:10.1109/97.735426.
Richmond CD. Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities. IEEE Signal Processing Letters. 1998 Dec 1;5(12):325–327.

Published In

IEEE Signal Processing Letters

DOI

ISSN

1070-9908

Publication Date

December 1, 1998

Volume

5

Issue

12

Start / End Page

325 / 327

Related Subject Headings

  • Networking & Telecommunications
  • 4603 Computer vision and multimedia computation
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0801 Artificial Intelligence and Image Processing