| 毫米脉冲波在雾媒质中的传输效应 |
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| 引用本文： | 董群锋,李应乐,张辉,严斌.毫米脉冲波在雾媒质中的传输效应[J].咸阳师范学院学报,2007,22(2):17-20. |
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| 作者姓名： | 董群锋 李应乐 张辉 严斌 |
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| 作者单位： | 咸阳师范学院,物理系,陕西,咸阳,712000 |
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| 基金项目： | 咸阳师范学院校科研和教改项目 |
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| 摘 要： | 应用傅立叶时域积分近似解方法对毫米脉冲波通过雾媒质时的传输特性进行了研究和分析,得出了脉冲畸变、频移随频率、能见度及传播距离的变化关系,讨论了脉冲畸变与传播常数二阶导数的关系,得出脉冲畸变的规律,并进行了脉冲畸变仿真。对研究脉冲波在雨、雾等离散随机媒质中的传输效应研究有重要的理论参考价值。
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| 关 键 词： | 脉冲宽度 瑞利近似 畸变 |
| 文章编号： | 1672-2914（2007）02-0017-04 |
| 收稿时间： | 2006-12-22 |
| 修稿时间： | 2006年12月22 |
Propagation of Pulses at Millimeter Wavelengths Through Fog-filled Medium |
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| DONG Qun-feng,LI Ying-le,ZHANG Hui,YAN Bin.Propagation of Pulses at Millimeter Wavelengths Through Fog-filled Medium[J].Journal of Xianyang Normal University,2007,22(2):17-20. |
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| Authors: | DONG Qun-feng LI Ying-le ZHANG Hui YAN Bin |
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| Abstract: | The pulse propagation at Millimeter wavelengths through the fog-filled medium has been studied using a closed solution of Fourier integral for the time domain representation of the pulse.It has been found that the pulse distortion and frequency shift can be quite severe depending on frequency,pulse width,visibility and path length.Both broadening and compression of pulses can occur according to the values of second derivatives of the propagation constants.It is important significance for the transmission effects of pulses through discrete medium such as rain and fog. |
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| Keywords: | pulsed width Rayleigh approximation distortion |
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