| HF radar sea clutter rejection by nonlinear projections |
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| 作者姓名： | Zhou Gongjian Jin Yonggao Dong Huachun & Quan Taifan. Inst. of Electronic Engineering Harbin Inst. of Technology Harbin P. R. China . Dept. of Electronic Information Engineering Coll. of Science and Engineering Yanbian Univ. Yanji P. R. China |
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| 作者单位： | Zhou Gongjian1，Jin Yonggao2，Dong Huachun1 & Quan Taifan11. Inst. of Electronic Engineering，Harbin Inst. of Technology，Harbin 150001，P. R. China;2. Dept. of Electronic Information Engineering，Coll. of Science and Engineering，Yanbian Univ.，Yanji 133002，P. R. China |
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| 基金项目： | ThisprojectwassupportedbytheNationalNaturalScienceFoundationofChina(60172036). |
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| 摘 要： | 1.INTRODUCTION Utilizingverticalpolarizedelectromagneticwavethat canfollowthecurvatureoftheearthalongtheair wa terinterfacewithlowpropagationlossonhighlycon ductiveoceansurface,highfrequencyground wave radar(HFGWR)isdesignedtodetectandtracktar getsbeyondthehorizonsuchasvesselsovertheseaor aircraftsatlowaltitude.Thereforemoreandmore countriesdevotemuchenergytodevelopHFGWRin recentyears.However,HFGWRhascontinuedtobe seriouslylimitedbyahighthresholdofdetectionin seaclutter.Dominatingth…
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HF radar sea clutter rejection by nonlinear projections |
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| Zhou Gongjian,Jin Yonggao,Dong Huachun & Quan Taifan. Inst. of Electronic Engineering,Harbin Inst. of Technology,Harbin ,P. R. China,. Dept. of Electronic Information Engineering,Coll. of Science and Engineering,Yanbian Univ.,Yanji ,P. R. China.HF radar sea clutter rejection by nonlinear projections[J].Journal of Systems Engineering and Electronics,2005,16(4). |
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| Authors: | Zhou Gongjian Jin Yonggao Dong Huachun Quan Taifan |
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| Institution: | 1. Inst. of Electronic Engineering, Harbin Inst. of Technology, Harbin 150001, P. R. China
2. Dept. of Electronic Information Engineering, Coll. of Science and Engineering,Yanbian Univ., Yanji 133002, P. R. China |
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| Abstract: | In the background of signal detection for high frequency (HF) radar, the sea clutter is quite significant and can mask some weak target signals. A new clutter rejection method named "nonlinear projection" is given to improve the SNR of the target. This approach is based on the recent observation that HF sea clutter may be modeled as a nonlinear deterministic dynamical system. After approximating the multidimensional reconstruction of the clutter by a low-dimensional attractor, projections onto this attractor can separate the clutter from other components. Real sea clutter, simulated target data and real target data are used to show that a nonlinear clutter rejection method is a promising technique to suppress sea clutter and enhances target detection. |
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| Keywords: | HF radar target detection clutter rejection nonlinear projection |
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