Skip to main content

A Multiple Time Scale Modularized Adaptive Beamformer

Publication ,  Journal Article
Niezgoda, GH; Krolik, JL
Published in: IEEE Transactions on Signal Processing
January 1, 1994

This paper analyzes the cascaded equivalent form of the min imum variance distortionless response (MVDR) beamformer. A unique feature of the modularized MVDR (M2 VDR) beamformer is the ability to distribute adaptive degrees of freedom (DOF) among beamformer stages. This property of the M2VDR beamformer allows DOF to be adapted over different time scales. As a consequence of the multiple stage decomposition adaptive beamformer weights appear in a form which suggest an apparent increase in the number of DOF. To properly analyze this case an alternative interpretation of adaptive DOF is introduced to establish the equivalence between the MVDR beamformer and its cascaded realization. In the second part of this paper the distribution for the output power estimate of a P stage M2VDR beamformer is derived. Analysis reveals the necessity of placing constraints on the adaptation time assigned to each beamformer stage. Simulation experiments are presented that demonstrate the applicability of the M2VDR beamformer in resolving closely spaced sources under impulsive interference conditions. © 1994 IEEE

Duke Scholars

Published In

IEEE Transactions on Signal Processing

DOI

EISSN

1941-0476

ISSN

1053-587X

Publication Date

January 1, 1994

Volume

42

Issue

5

Start / End Page

1251 / 1256

Related Subject Headings

  • Networking & Telecommunications
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Niezgoda, G. H., & Krolik, J. L. (1994). A Multiple Time Scale Modularized Adaptive Beamformer. IEEE Transactions on Signal Processing, 42(5), 1251–1256. https://doi.org/10.1109/78.295189
Niezgoda, G. H., and J. L. Krolik. “A Multiple Time Scale Modularized Adaptive Beamformer.” IEEE Transactions on Signal Processing 42, no. 5 (January 1, 1994): 1251–56. https://doi.org/10.1109/78.295189.
Niezgoda GH, Krolik JL. A Multiple Time Scale Modularized Adaptive Beamformer. IEEE Transactions on Signal Processing. 1994 Jan 1;42(5):1251–6.
Niezgoda, G. H., and J. L. Krolik. “A Multiple Time Scale Modularized Adaptive Beamformer.” IEEE Transactions on Signal Processing, vol. 42, no. 5, Jan. 1994, pp. 1251–56. Scopus, doi:10.1109/78.295189.
Niezgoda GH, Krolik JL. A Multiple Time Scale Modularized Adaptive Beamformer. IEEE Transactions on Signal Processing. 1994 Jan 1;42(5):1251–1256.

Published In

IEEE Transactions on Signal Processing

DOI

EISSN

1941-0476

ISSN

1053-587X

Publication Date

January 1, 1994

Volume

42

Issue

5

Start / End Page

1251 / 1256

Related Subject Headings

  • Networking & Telecommunications