| 超长基线双基机载雷达空时杂波建模与特性 |
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| 引用本文： | 王成浩,廖桂生,许京伟,曾操.超长基线双基机载雷达空时杂波建模与特性[J].系统工程与电子技术,2016,38(10):2258-2266. |
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| 作者姓名： | 王成浩 廖桂生 许京伟 曾操 |
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| 作者单位： | 1. 西安电子科技大学雷达信号处理国家重点实验室, 陕西 西安 710071;
2. 信息感知技术协同创新中心, 陕西 西安 710071 |
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| 摘 要： | 超长基线双基机载雷达杂波的空时分布特性不仅严重依赖于双基雷达构型,也取决于地球曲率引入的波束覆盖问题。针对这一问题,推导了地心坐标系下超长基线双基机载雷达等距离环解析表达式,得出等距离环在基线所在铅锤面的投影为抛物线。通过对几种典型双基构型及其公共波束覆盖区域的分析,研究了超长基线双基雷达杂波空时分布的条带式截断特性,给出了杂波分布的距离依赖性分析。仿真实验验证了本文分析结论的正确性和有效性。
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Modeling and characteristics analysis of space-time clutter for ultralong baseline bistatic airborne radar |
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| WANG Cheng-hao,LIAO Gui-sheng,XU Jing-wei,ZENG Cao.Modeling and characteristics analysis of space-time clutter for ultralong baseline bistatic airborne radar[J].System Engineering and Electronics,2016,38(10):2258-2266. |
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| Authors: | WANG Cheng-hao LIAO Gui-sheng XU Jing-wei ZENG Cao |
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| Institution: | 1. National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China;;
2. Collaborative Innovation Center of Information Sensing and Understanding, Xi’an 710071, China |
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| Abstract: | Under the effect of earth curvature on geometry of ultralong baseline bistatic airborne radar, the space-time clutter distribution severely depends on bistatic geometry and area of beam coverage. To solve this problem, analytical expression of the iso-range ring is derived in geocentric coordinates and it turns out that the projection of the iso-range ring on plumb surface in which the baseline lies is parabolic. On analysis of several typical bistatic geometries and area of beam coverage, the stripped truncation characteristics of space-time distribution of clutter for ultralong baseline bistatic airborne radar and range-dependence of clutter are researched. Simulation results verify the validity and effectiveness of the conclusion. |
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