空间非平稳噪声环境下的DOA估计新算法

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A novel method for estimating DOA in the presence of spatially nonstationary noise fields

WU Yun-tao;LIAO Gui-sheng;ZHANG Guang-bin

(Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071, China)

Received:1900-01-01 Revised:1900-01-01 Online:2003-02-20 Published:2003-02-20

Abstract

Abstract: A new method for estimating spatial narrow-band signal directions in the presence of the spatially nonstationary noise with unknown covariance is presented. An estimate of the colored noise covariance matrix is given. The received data for parameter estimation is then prewhitened using the estimated noise covariance, thus overcoming the highly biased estimates. Furthermore, its performances are confiremed by computer simulations.

Key words: array signal processing, colored noise, DOA estimate

CLC Number:

TN957.52

WU Yun-tao;LIAO Gui-sheng;ZHANG Guang-bin.

A novel method for estimating DOA in the presence of spatially nonstationary noise fields

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A novel method for estimating DOA in the presence of spatially nonstationary noise fields

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