循环平稳弱目标回波信号的盲抽取方法

doi:10.3969/j.issn.1001-2400.2016.02.010

Abstract

Abstract:

To extract the weak echo signal buried in a strong direct signal, multipath signal, interfering signal and noise in passive radar systems, a new method is proposed based on cyclostationarity. The desired signal can be directly extracted from the echo channel without the reference channel based on the spectral line generating characteristics. Then, the component of the desired signal is maximized in an iterative way, while other signals and noise are minimized. Compared with the traditional methods, the proposed algorithm does not need the reference channel, which can simplify the structure of the receiver, and what's more, the computational burden is decreased. Simulation results verify the effectiveness of the proposed method.

Key words: passive radar system, blind source extraction, cyclostationarity

CLC Number:

TN958.97

ZHU Yun;WANG Jun;ZHANG Gege;WANG Xiangru. Blind extraction of the weak cyclostationary echo signal[J].Journal of Xidian University, 2016, 43(2): 52-57.

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Blind extraction of the weak cyclostationary echo signal

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