Modified adaptive ocean clutter suppression approach in OTHR

被引：4

作者：

Zhao, Zhi-Guo ^{[1
]}

Chen, Jian-Wen ^{[1
]}

Bao, Zheng ^{[1
]}

机构：

[1] Key Research Laboratory of Wuhan Radar Academy

来源：

Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2012年 / 34卷 / 05期

关键词：

Moving target indication (MTI); Ocean clutter suppression; Over-the-horizon radar (OTHR); Ship targets;

D O I：

10.3969/j.issn.1001-506X.2012.05.10

中图分类号：

学科分类号：

摘要：

The ocean clutter is one of the significant factors that limit the detection performance of the over-the-horizon radar (OTHR) system for slowly moving ship targets. Aimed at the problem that when the Doppler of a target is not significant to allow discrimination in Doppler, the target peak can be spilt or deviate from the true position, a modified eigen-value decomposition (MEVD) approach, which combines the moving target indication (MTI) and an adaptive approach based on eigen-value decomposition is adopted. In MEVD approach, the clutter near target is suppressed with MTI and other clutters are suppressed with adaptive approach. Meanwhile, this approach is able to suppress not only the first order but also high order ocean clutter, so the signal-to-clutter-plus-noise ratio is increased, which helps to improve detection performance of OTHR. Theoretical analysis and the results of simulations and real data processing indicate the effectiveness of MEVD approach.

引用

页码：909 / 914

页数：5

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