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A lightweight clutter suppression algorithm for passive bistatic radar

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A lightweight clutter suppression algorithm for passive bistatic radar
In passive bistatic radar,the computational efficiency of clutter suppression algorithms remains low,due to continuous increases in bandwidth for potential illuminators of opportunity and the use of multi-source detection frameworks.Accordingly,we propose a lightweight version of the extensive cancellation algorithm(ECA),which achieves clutter suppression performance comparable to that of ECA while reducing the computational and space complexities by at least one order of magnitude.This is achieved through innovative adjustments to the reference signal subspace matrix within the ECA framework,resulting in a redefined approach to the computation of the autocorrelation matrix and cross-correlation vector.This novel modification significantly simplifies the computational aspects.Furthermore,we introduce a dimension-expanding technique that streamlines clutter estimation.Overall,the proposed method replaces the computation-intensive aspects of the original ECA with fast Fourier transform(FFT)and inverse FFT operations,and eliminates the construction of the memory-intensive signal subspace.Comparing the proposed method with ECA and its batched version(ECA-B),the central advantages are more streamlined implementation and minimal storage requirements,all without compromising performance.The efficacy of this approach is demonstrated through both simulations and field experimental results.

Passive bistatic radarClutter suppressionExtensive cancellation algorithmComputational complexitySpace complexity

Yong WU、Luo ZUO、Dongliang PENG、Zhikun CHEN

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Intelligent Transportation School,Zhejiang Institute of Communications,Hangzhou 311112,China

Guangzhou Institute of Technology,Xidian University,Guangzhou 510555,China

School of Automation,Hangzhou Dianzi University,Hangzhou 310018,China

Passive bistatic radar Clutter suppression Extensive cancellation algorithm Computational complexity Space complexity

2024

10.1631/FITEE.2300859

信息与电子工程前沿(英文)
浙江大学

信息与电子工程前沿(英文)

CSTPCD
影响因子：0.371
ISSN：2095-9184
年,卷(期)：2024.25(11)