| 最大熵法在高频雷达角度超分辨中的应用 |
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| 引用本文： | 王继良,段凤增.最大熵法在高频雷达角度超分辨中的应用[J].系统工程与电子技术,1993(10). |
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| 作者姓名： | 王继良 段凤增 |
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| 作者单位： | 哈尔滨工业大学
(王继良)，哈尔滨工业大学(段凤增) |
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| 摘 要： | 角度超分辨技术近年来得到了迅速的发展,但是大部分的研究工作都是在假定阵元间噪声不相关的情况下进行的,而对于阵元间噪声(干扰)相关的情况的研究还没有看到。 本文在研究了各种角度超分辨算法的基础上,针对地波超视距雷达的海杂波干扰背景,采用最大熵法作为实现角度超分辨的主要手段,进行了计算机仿真。根据大量的仿真结果,分析了海杂波、信杂比、目标的起始相位等因素对于分辨效果的影响。最后得出结论:最大熵法能够有效地解决海杂波背景下,高频雷达的多目标分辨问题。
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| 关 键 词： | 角分辨率 目标识别 噪声 计算机模拟 超视距雷达 |
Application of Maximum Entropy in Angular Superresolution of OTHR |
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| Wang Jiliang and Duan FengzengHarbin Institute of Technology.Application of Maximum Entropy in Angular Superresolution of OTHR[J].System Engineering and Electronics,1993(10). |
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| Authors: | Wang Jiliang and Duan FengzengHarbin Institute of Technology |
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| Institution: | Wang Jiliang and Duan FengzengHarbin Institute of Technology |
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| Abstract: | Angular superresolution technique has been developed rapidly in recent years, but most of the research work is done with the assumption that noise between one array sensor and another is not correlative. There is no paper on correlative noise between one sensor and another up till now.In this paper, on the basis of studying many kinds of methods of angular superresolution, maximum entropy method (MEM) is simulated to solve the problem of angular superresolution as a main means against the sea-clutter background of ground-wave over-the-horizen radar (OTHR). According to the simulation results, factors affecting resolution are analysed, such as sea-clutter, signal to clutter ratio, the initial phase of targets etc. At last, the conclusion is that MEM can be applied to high frequence OTHR to distinguish multiple targets against the sea-clutter background. |
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| Keywords: | Superresolution Spectrum analysis Spectrum estimation Maximum entropy |
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