一、概述 云是大气中水汽凝结或凝华所造成的一种现象。在航空上,云既能妨碍飞行活动,危及飞行安全,又可以增加战术上的有利条件。因此及时准确地掌握云的情况,特别是测出云的高度,对分析天气预报和直接保障飞行活动,都具有重要的作用。气象工作者 First, an overview of the cloud is the air condensation or condensation caused by a phenomenon. In aviation, the cloud can hinder flight activities, jeopardize flight safety and increase tactical advantage. Therefore, timely and accurate grasp of the situation of the cloud, especially measuring the height of the cloud, plays an important role in analyzing the weather forecast and directly guaranteeing the flight activities. Meteorological workers