一、前言经过“八五”、“九五”和“十五”期间的重点建设,我国民航信息化在基础设施建设、重要信息系统开发和运用、技术队伍建设和人才培训等方面都取得了显著成绩。目前,两个民航专用通信网络(空管数据通信网和商务通信网)已经建成,几套信息系统包括离港系统、旅客订座、全球分销系统 I. Preface After the key construction during the “Eighth Five-Year Plan”, the “Ninth Five-Year Plan” and the “Tenth Five-Year Plan”, China’s civil aviation informationization has made great achievements in infrastructure construction, development and application of important information systems, technical team building and personnel training Significant achievements. At present, two civil aviation dedicated communication networks (ATC data network and business communication network) have been set up. Several information systems include departure systems, passenger reservations, global distribution system