Sea Clutter Suppression Method for Over-the-horizon Radar with Short Coherent Integration Time Based on Compressed Sensing

被引：4
|
作者：
Yan T. [1 ]
Chen J. [1 ]
Bao Z. [1 ]
机构：
[1] Key Research Laboratory, Air Force Early Warning Academy, Wuhan
来源：
Yan, Tao (yantaokjld@163.com) | 1600年 / Science Press卷 / 39期
基金：
中国国家自然科学基金;
关键词：
Coherent Integration Time (CIT); Compressed Sensing (CS); Redundant dictionary; Sea clutter suppression; Skywave Over-The-Horizon Radar (OTHR);
D O I：
10.11999/JEIT160576
中图分类号：
学科分类号：
摘要：
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. © 2017, Science Press. All right reserved.
引用
收藏
页码：945 / 952
页数：7
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