一种基于压缩感知的天波超视距雷达短时海杂波抑制方法

doi:10.11999/JEIT160576

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Abstract

To deal with the drawbacks of low reconstruction accuracy and poor suppression performance of clutter with short Coherent Integration Time (CIT) for traditional time domain cancellation method, a method of sea clutter reconstruction and suppression based on Compressed Sensing (CS) is proposed. Firstly, echoes model of Over-The-Horizon Radar (OTHR) with short CIT is established, and the rationality using CS to reconstruct sea clutter is analyzed. Secondly, the proposed method is elaborated in detail from sparse representation of echoes model based on redundant sinusoidal?dictionary, representation of sensing matrix based on dimensionality reduction dictionary and sea clutter reconstruction and suppression based on the modified Orthogonal Matching Pursuit (OMP) algorithm respectively. Finally, the computer simulation analysis and measured data verification are accomplished. The results indicate that the clutter suppression performance and engineering application value of the proposed method are better than the traditional time domain cancellation method and subspace methods in the condition of short CIT.

Key words： Skywave Over-The-Horizon Radar (OTHR) Compressed Sensing (CS) Coherent Integration Time (CIT) Sea clutter suppression Redundant dictionary

Received: 01 June 2016 Published: 24 February 2017

PACS:

TN958.93

Fund:

The National Natural Science Foundation of China (61471391)

Corresponding Authors: YAN Tao E-mail: yantaokjld@163.com

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	YAN Tao
	CHEN Jianwen
	BAO Zheng

Cite this article:

YAN Tao,CHEN Jianwen,BAO Zheng. Sea Clutter Suppression Method for Over-the-horizon Radar with Short Coherent Integration Time Based on Compressed Sensing[J]. JEIT, 2017, 39(4): 945-952.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT160576 OR http://jeit.ie.ac.cn/EN/Y2017/V39/I4/945

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