PRECONDITIONED METHODS FOR SPACE-TIME ADAPTIVE PROCESSING

PRECONDITIONED METHODS FOR SPACE-TIME ADAPTIVE PROCESSING

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摘要 This paper introduces the preconditioned methods for Space-Time Adaptive Processing(STAP).Using the Block-Toeplitz-Toeplitz-Block(BTTB)structure of the clutter-plus-noise covari-ance matrix,a Block-Circulant-Circulant-Block(BCCB)preconditioner is constructed.Based on thepreconditioner,a Preconditioned Multistage Wiener Filter(PMWF)which can be implemented by thePreconditioned Conjugate Gradient(PCG)method is proposed.Simulation results show that thePMWF has faster convergence rate and lower processing rank compared with the MWF. This paper introduces the preconditioned methods for Space-Time Adaptive Processing （STAP）.Using the Block-Toeplitz-Toeplitz-Block（BTTB）structure of the clutter-plus-noise covariance matrix,a Block-Circulant-Circulant-Block（BCCB）preconditioner is constructed.Based on the preconditioner,a Preconditioned Multistage Wiener Filter（PMWF）which can be implemented by the Preconditioned Conjugate Gradient（PCG）method is proposed.Simulation results show that the PMWF has faster convergence rate and lower processing rank compared with the MWF.

作者 Zhang Zenghui Hu Weidong Yu Wenxian

机构地区 College of Electronic Science and Engineering

出处《Journal of Electronics(China)》 2008年第4期465-470,共6页 电子科学学刊（英文版）

基金 the Innovation Foundation of NUDT forPh.D.graduates.

关键词 Conjugate gradient method Multistage Wiener filter PRECONDITIONER Space-Time Adaptive Processing （STAP） 雷达信号处理时空自适应处理多级维纳滤波预处理方法

分类号 TN957.51 [电子电信—信号与信息处理] TN959.73 [电子电信—信号与信息处理]

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Journal of Electronics(China)

2008年第4期

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PRECONDITIONED METHODS FOR SPACE-TIME ADAPTIVE PROCESSING

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