摘要
利用平流雾与辐射雾的能见度与含水量的经验公式导出的 Gamma雾滴谱分布 ,得到了平流雾和辐射雾的雷达反射因子 Z与雾的能见度、含水量的关系式。以94GHz雷达为例 ,研究了雾的雷达后向散射特性。最后利用毫米波衰减数据和能见度反演的几场湿海雾参数 ,研究了湿海雾的后向散射特性 ,研究结果表明
Based on Gamma distribution model of fog drip size derived from the empirical relation of visibility and water content for advection and radiation fogs, the relations between radar reflectivity factor and fog visibility or water content are proposed. As an example, the radar backscattering characteristics at 94 GHz is given. Finally, based on moist fog parameters derived from terrestrial millimeter wave attenuation data and visibility, the backscattering characteristis of moist fog are discussed, and the results show that the radar reflectivity factor of moist fog approximately corresponds to that of moderate and heavy rain.
出处
《电波科学学报》
EI
CSCD
2001年第4期498-502,共5页
Chinese Journal of Radio Science
关键词
雾
后向散射截面
雷达反射因子
电流传播
fog radar cross section radar reflectivity factor visibility
