Multi-channel NLMS-based sea clutter cancellation in passive bistatic radar

LETTER

Tao Shan, Yahui Ma, Ran Tao, Shengheng Liu

Author information

Keywords: passive bistatic radar (PBR), sea clutter cancellation, multi-channel normalized least-mean-square (MCNLMS), adaptive filter

JOURNAL FREE ACCESS

2014 Volume 11 Issue 20 Pages 20140872

DOI https://doi.org/10.1587/elex.11.20140872

Browse “Advance online publication” version

Details

Abstract

Sea clutter suppression is critical in the detection of low-velocity targets using a passive bistatic radar. The residual sea clutter may become high when the normalized least-mean-square (NLMS) algorithm with a small step size is used for this purpose. While a large step size can be used to reduce the residual sea clutter, it yields a widened filter notch, and thereby, causes significant target signal energy loss. A multi-channel NLMS algorithm is proposed to solve this problem, and its effectiveness is verified by simulation and real radar data analysis.

Corresponding author

Register with J-STAGE for free!