| 摘要: |
| 端射阵天线是指波束指向垂直于阵列法线方向的一类特殊雷达天线，由于其具有低剖面和定向辐射特性，因而特别适合用于机载雷达的补盲。本文基于端射阵机载雷达杂波回波模型，首先分析了端射阵机载雷达杂波谱在距离模糊情况下的杂波特性，并对目前三种存在距离模糊时典型近程非平稳杂波抑制方法的基本原理进行了介绍；其次基于端射阵机载雷达对典型方法的杂波抑制性能进行了仿真分析；最后综合考虑各种因素，对各种方法在端射阵机载雷达背景下的适用性进行了分析，并得出了有益结论，可为端射阵机载雷达非平稳杂波抑制方法的进一步研究提供重要参考。 |
| 关键词: 端射阵 距离模糊 距离依赖性 杂波模型 近程杂波抑制 |
| DOI：DOI:10.3969/j.issn.1672-2337.2020.02.004 |
| 分类号:TN957;TN959.73 |
| 基金项目:国家自然科学基金（No.61102169） |
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| Clutter Suppression Methods with Range Ambiguity for End Fire Array Airborne Radar |
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LI Yongwei，XIE Wenchong，WANG Shaobo
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1. Key Research Laboratory，Air Force Early Warning Academy，Wuhan 430019，China;2.2. Unit 32036 of PLA，Chongqing 401320，China
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| Abstract: |
| The end fire array antenna refers to a special type of radar antenna whose main beam is directed perpendicularly to the normal direction of the array. Because of low profile and directional radiation characteristics，it is particularly suitable for the blind compensation of airborne radar. Firstly，the clutter spectrum characteristics of end fire array airborne radar with range ambiguity are analyzed based on the clutter echo model of end fire array airborne radar，and the basic principles of three typical short range non stationary clutter suppression methods with range ambiguity are introduced. Secondly，the clutter suppression performance of the typical methods used on end fire array airborne radar is simulated and analyzed. Finally，considering all kinds of factors，the applicability of each method in the background of end fire array airborne radar is analyzed，and some useful conclusions are drawn. Our study can provide important reference for the further research on non stationary clutter suppression methods for end fire array airborne radar. |
| Key words: end fire array range ambiguity range dependence clutter model short range clutter suppression |
