| 摘要: |
| 对单脉冲雷达实施的交叉眼干扰是一种重要的雷达角度欺骗手段，但是对这一干扰样式的传统理论分析与数学公式表达不仅繁杂，而且也没有揭示出其所具有的本质物理意义。针对这一问题，借鉴历史上物理光学中经典的杨氏双缝干涉实验，通过类比分析展示了雷达对抗中的交叉眼干扰与双缝相干光干涉成像的众多相似之处，详细分析了交叉眼干扰中两个相干干扰信号在单脉冲雷达天线处形成的干涉条纹对雷达测角处理的和差信号所造成的影响，形象地揭示了交叉眼干扰起效的原因与相关影响因素，并通过仿真对上述类比与理论分析结果进行了有效验证。从而为后续的干扰样式优化和工程实现因素控制的进一步研究提供了新的方法与手段，具有重要的理论意义和实用价值。 |
| 关键词: 雷达对抗 单脉冲雷达 交叉眼干扰 角度欺骗 相干干扰 杨氏双缝干涉实验 干涉条纹 光波与微波 |
| DOI：DOI:10.3969/j.issn.1672-2337.2019.04.017 |
| 分类号:TN958.4；TN974 |
| 基金项目: |
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| Explanation of the Principle of Cross-Eye Jamming from Young’s Two-Slit Interference Experiment |
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SHI Rong，DU Yu
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Science and Technology on Electronic Information Control Laboratory，Chengdu 610036，China
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| Abstract: |
| The cross-eye jamming on monopulse radar is one of important approaches about angle deception on radars. The traditional theoretical analysis on this jamming pattern is complicated and hardly reveals its physical significance. In order to solve this problem，the classical Young’s two slits interference experiment in the history of physical optics is applied to the study in this paper. A lot of similarities between the cross-eye jamming and the two-slit interference imaging are demonstrated by analogy analysis. The coherent fringes are produced by two coherent jamming signals from the cross-eye jammer，and their influences on sum and differential signals in the angle measurement of monopulse radar are analyzed in detail. The effecting reasons and relative factors of cross-eye jamming are vividly revealed. The theoretical analysis is effectively verified by simulations. It provides a new method for the further research on the jamming pattern optimization and engineering factor control and has important theoretical and practical significances. |
| Key words: radar countermeasure monopulse radar cross-eye jamming angle deception coherent jamming Young’s two-slit interference experiment coherent fringe optical wave and microwave |
