| 蒸发波导水平不均匀性对电磁波传播的影响 |
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| 引用本文： | 朱明永,杨坤德.蒸发波导水平不均匀性对电磁波传播的影响[J].探测与控制学报,2008,30(6). |
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| 作者姓名： | 朱明永 杨坤德 |
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| 作者单位： | 西北工业大学航天学院,陕西西安,710072 |
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| 基金项目： | 国家自然科学基金项目资助
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西北工业大学科技创新基金项目资助
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| 摘 要： | 蒸发波导是海上一种典型的异常大气折射结构,它能够部分陷获电磁波从而改变电磁波的传播特性.目前对电磁波在波导环境下传播特性的研究多数假定波导是水平均匀的,却很少考虑波导的水平不均匀情况.利用电磁波传播的抛物方程(PE)模型,通过仿真研究了波导水平不均匀性对其传播特性的影响,定量分析了不同收发高度及不同频率条件下电磁波路径损失的变化规律.结果表明,波导不均匀条件下电磁波传播的路径损失与均匀条件下明显不同.
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| 关 键 词： | 蒸发波导 抛物方程 水平不均匀性 传播损失 |
Effects of Horizontally Inhomogeneous Evaporation Duct upon Electromagnetic Wave Propagation |
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| ZHU Ming-yong,YANG Kun-de.Effects of Horizontally Inhomogeneous Evaporation Duct upon Electromagnetic Wave Propagation[J].Journal of Detection & Control,2008,30(6). |
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| Authors: | ZHU Ming-yong YANG Kun-de |
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| Affiliation: | ZHU Ming-yong,YANG Kun-de (School of Astronautics,Northwestern Polytechnical University,Xi\'an 710072,China) |
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| Abstract: | Evaporation duct is a typical structure of abnormal atmospheric refractivity,which can partly trap electromagnetic wave and change its propagation characteristics.Presently,studies of electromagnetic wave mostly assume that the evaporation duct is horizontally homogeneous instead of horizontally homogeneous.In this paper,effects of horizontally inhomogeneous evaporation duct upon electromagnetic wave propagation is studied by simulation,and the variation law of electromagnetic path loss is quantitatively an... |
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| Keywords: | evaporation duct parabolic equation(PE) horizontally inhomogeneous propagation loss |
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