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| 沙尘尺寸分布对微波传输特性的影响 | |
| 引用本文： | 董群锋,许家栋,李应乐,张辉,王明军.沙尘尺寸分布对微波传输特性的影响[J].装备环境工程,2010,7(5):1-3,19. |
| 作者姓名： | 董群锋 许家栋 李应乐 张辉 王明军 |
| 作者单位： | 1. 西北工业大学,西安,710072;咸阳师范学院,陕西,咸阳,712000 2. 西北工业大学,西安,710072 3. 咸阳师范学院,陕西,咸阳,712000 |
| 基金项目： | 国家自然科学基金项目，陕西省教育厅 |
| 摘 要： | 应用沙尘粒子的尺寸分布和沙粒的等效介电常数模型,给出了微波在沙尘暴中的传输模型,表明沙尘的衰减和相移与沙粒的等效半径成正比关系,并对不同能见度、不同频率和不同高度下沙尘暴引起的衰减和相移进行了仿真计算。结果表明,对数正态分布和指数分布对微波的传输特性影响最大,瑞利分布和正态分布的预测结果比较接近且影响最小。 |
| 关 键 词： | 尺寸分布 微波 衰减和相移 |
Effect of Particle Size Distribution on Microwave Transmission |
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| DONG Qun-feng,XU Jia-dong,LI Ying-le,ZHUANG Hui,WANG Ming-jun.Effect of Particle Size Distribution on Microwave Transmission[J].Equipment Environmental Engineering,2010,7(5):1-3,19. | |
| Authors: | DONG Qun-feng XU Jia-dong LI Ying-le ZHUANG Hui WANG Ming-jun |
| Institution: | 1.Northwestern Polytechnical University,Xi′an 710072,China;2.Xianyang Normal University,Xianyang 712000,China) |
| Abstract: | Based on the size distributions of sand particle and the equivalent permittivity method,the model of microwave transmission into sand/dust storms was obtained.The attenuation and phase shift caused by sandstorm of different visibility,frequency and height was calculated with the simulation model.It was shown that attenuation and phase shift is proportional to the value of equate radius of sand;the log-normal and exponential distributions have more effect on microwave,but the Rayleigh and normal distribution... |
| Keywords: | size distribution microwave attenuation and phase shift |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |