民航通信导航系统是民用航空正常运行的重要基础之一,它不但为实施空中交通管理提供保证,而且,还担负着为航空公司,以及民航各有关部门提供通信导航保障。因此,民航通信导航的建设直接关系到民航飞行安全及航空运输事业的发展。各级领导和全体同志都必须充分认识到这项工作的重要性。改革开放以来,民航通信导航事业有了较大的发展。新技术的应用、设备的更新,为通信导航的正常运转提供了 Civil aviation communication and navigation system is one of the important bases for the normal operation of civil aviation. It not only provides guarantee for the implementation of air traffic management, but also provides communication and navigation support for airlines and relevant departments of civil aviation. Therefore, the construction of civil aviation communication and navigation has a direct bearing on the development of civil aviation flight safety and air transportation. Leaders at all levels and all comrades must fully realize the importance of this work. Since the reform and opening up, civil aviation communications and navigation have made great progress. The application of new technologies, equipment updates, provided for the normal operation of communications and navigation