民航甚高频地空数据链地面站优化设计

Optimized design of VHF air-ground data link ground station in civil aviation

现有民航甚高频地空数据链通信系统数据源面向用户封闭、无法二次开发,难以满足大飞机研制阶段的验证测试要求。通过分析现有民航甚高频地空数据链的报文处理流程,对地空数据链地面站系统功能进行划分。以满足地空通信协议规范和用户需求为出发点,提出了甚高频地空数据链的优化思想,总结了所需解决的三个问题:算法复杂度评估、硬件数据交互实现、数据管理。文中着重对地面站系统中的解调算法和数据交互方案进行评估,最后给出了优化设计方案。

In nowadays civil aviation, the data source of VHF air-ground data link （VDL） communications system its is user-oriented closed and can not be secondary developed. The system is unable to meet the requirements of verification and testing in the development stage of large aircraft. Functions of ground station system were divided by analysing aviation. Optimization ideal was proposed according to specification and user demand, and three issues which should messages processing flow of VDL in civil the air-ground communication protocol be solved were summarized：evaluation of algorithm complexity, implementation of data interaction in hardware and management of data. Assessment of demodulation algorithm and data interaction program in ground station system are the emphasis in this paper and finally the optimized design program is put forward.