一、引言随着航空事业的不断发展,航班密度的逐渐加大,低能见度(本文定义≤1公里的能见度为低能见度)对飞行的影响也越来越明显。据文献的统计分析,国际民航事故原因分类中,气象原因造成的飞行事故约占20%,仅次于机组差错;因低能见度(这里的低能见度指的是≤1.2公里的能见度)造成的事故约占气象原因的16%,高于雷暴。而在国内低能见度造成的事故占气象 I. INTRODUCTION With the continuous development of aviation and the gradual increase of flight densities, the impact of low visibility (defined in this paper as being less than 1 km in visibility) is more and more obvious on flights. According to the statistical analysis of the literature, among the causes of international civil aviation accidents, about 20% of the flight accidents caused by meteorological causes are second only to crew errors; accidents caused by low visibility (where visibility is ≤1.2km) About 16% of meteorological reasons, higher than thunderstorms. The accidents caused by low visibility in the country accounted for the weather