根据Koschmicder能见度公式结合雾滴粒子消光系数、雾中含水量W及雷达反射率因子Z之间的相互关系,解析了雷达雾回波的反射率因子Z与雾区能见度的关系,并以2006年冬南京实测雾滴谱资料,估算在特定雾滴谱模型下能见度与雷达反射率因子的关系,以及对2006年镇江站一次大雾天气的实测雷达回波及能见度资料的分析,验证雾中能见度与雷达回波的相关性,能见度随反射率因子Z的增大而递减。 According to the Koschmicder visibility formula and the correlation between the droplet particle extinction coefficient, the moisture content in the fog and the radar reflectivity factor Z, the relationship between the reflectivity factor Z of radar fog and the visibility of fog area is analyzed. The relationship between the visibility and radar reflectivity factor in a specific fog droplet spectral model was estimated based on the measured data of fog droplet in winter Nanjing as well as the data of the observed radar echoes and visibility of a heavy fog in 2006 in Zhenjiang Station. Radar echo correlation, visibility decreases with increasing reflectivity factor Z.