The microwave communication system is the most important part of the emergency communication system at low altitudes.As master equipment,it accomplishes broad band wireless information transmission among network nodes(airborne base stations and remote ground access station)in the system.Complex environmental conditions and bad electromagnetic environmental conditions in disaster-hit area as well as the airship platform put special requirements on the microwave communication system.The paper puts forward the overall design idea of the ground-air and air-air microwave communication links.OFDM anti-fading technology and antenna servo tracking technology are adopted.Meanwhile,the paper presents the method for estimating technical specifications of the links and the calculation result,and validates the feasibility of the design scheme by system test.%微波通信系统是低空区域应急通信系统的重要组成部分,作为主用装备,主要完成系统内网络节点（升空基站）之间、网络节点到远端地面接入点之间的大容量无线信息传输。分析了应急条件下复杂地形、恶劣电磁环境、飞艇平台对微波通信系统提出的特殊要求,提出了微波通信系统中地空、空空微波通信链路的总体设计思路,采用了OFDM抗衰落技术和天线伺服跟踪技术,给出了链路指标估算方法及估算结果,通过系统试验验证了设计方案的可行性。
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