论文部分内容阅读
基于 Rayleigh散射近似和水的双 Debye复介电常数模型计算的云雾衰减系数 ,得到了一种新的估算云雾毫米波衰减系数的经验公式 ,计算结果表明在 1 0～1 0 0 0 GHz频率范围和 - 8℃～ 2 0℃温度范围内 ,这一经验公式和直接计算结果间的最大误差小于 9% ,与其他经验模式比较表明 ,本文所给经验模式在温度和频率适用范围上都有了较大改进 ,最后简述了雾衰减与能见度的关系。
Based on the Rayleigh scattering approximation and the double-Debye complex dielectric constant model of water, the empirical attenuation coefficient of cloud is obtained, and a new empirical formula for estimating the attenuation coefficient of cloud-millimeter wave is obtained. The calculation results show that in the frequency range of 10 ~ And-8 ℃ ~ 20 ℃, the maximum error between this empirical formula and the direct calculation result is less than 9%. Comparing with other empirical modes, it is found that the empirical mode given in this paper has both the application range of temperature and frequency Greatly improved, finally concludes the relationship between fog attenuation and visibility.