The effects of nonuniform and correlated noise on superresolution algorithms

Author

Torrieri, Don ; Bakhru, Kesh

Author_Institution

Army Res. Lab., Adelphi, MD, USA

Volume

45

Issue

8

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

1214

Lastpage

1218

Abstract

The effects of nonuniform noise power and correlated noise in an antenna array on the performance of the recursive suppression, standard MUSIC, and reduced MUSIC superresolution algorithms are examined. It is shown that the speeds of resolution of all the algorithms are slowed, but their steady-state errors exhibit only a mild sensitivity to moderate noise-power variations if the signal-to-noise (SNR) is sufficiently large. The sensitivity of the standard MUSIC algorithm to correlated noise is shown to be much more than that of the other two algorithms, which can tolerate considerable correlated noise even when the SNR is relatively low

Keywords

adaptive antenna arrays; adaptive signal processing; array signal processing; correlation methods; direction-of-arrival estimation; interference suppression; noise; signal resolution; SNR; adaptive superresolution system; antenna array; correlated noise; noise power variations; nonuniform noise power; recursive suppression performance; reduced MUSIC superresolution algorithm; resolution; signal to noise; standard MUSIC algorithm; steady-state errors; Adaptive arrays; Algorithm design and analysis; Antenna arrays; Directive antennas; Matrix decomposition; Multiple signal classification; Noise figure; Noise reduction; Signal resolution; Signal to noise ratio;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.611239

Filename

611239