一、概论近几年来,我国民用航空业得到突飞猛进的发展,由此引发了高速增长的空中流量和落后的流量管理之间的矛盾,这种矛盾集中体现在90年代中期空管系统的差错率明显增高。适应空中交通的新格局,充分利用空域,保障飞行安全,是空中交通领域面临的首要问题。空域是航空器活动的空间范围,是机场和航空事业 I. Introduction In recent years, the rapid development of China’s civil aviation industry has led to the contradiction between the rapid growth of air traffic and the backward traffic management. This contradiction is mainly reflected in the mid-90s the error rate of ATC system Significantly higher. Adapting to the new pattern of air traffic, making full use of airspace and ensuring flight safety are the primary problems facing the air traffic. Airspace is the spatial extent of aircraft activity, both in airports and in aviation