多种中继方式在大型无人机输电线路巡检中的应用

通信数据链中继方式是大型无人机输电线路远距离、超视距巡检飞行的关键技术瓶颈。通过对多种中继方式可行性分析和评估，阐述空中中继无人机、地面固定、车载移动、OPGW光纤等中继方式在大型无人机输电线路巡检中的应用研究和实地验证情况，介绍利用现有资源因地制宜设置地面中继站的方法和经验。推荐无人机巡检实用化的通信中继方式及改进完善意见，建议创建支撑无人机巡检的通信数据链中继站资源信息数据库，为无人机实用化巡检作业提供实时的通信中继技术保障。

Application of Various Relay Modes for Transmission Line Inspection with Large-Size Unmanned Helicopters

Relay technology in communication data link is the bottleneck for large-size unmanned helicopters to perform long-distance, over-the-horizon transmission line inspection flight. In this paper, various relay modes and feasibility are analyzed and evaluated, and the application and field validation of various relay modes for large-size unmanned helicopter transmission line inspection is presented, including aerial relays using unmanned helicopters, ground fixed relays, vehicle mobile relays and OPGW optical fiber relays. The method and experience of setting up ground relay stations by using available resources according to real circumstances are introduced. In addition, some suggestions are provided about relay modes for unmanned helicopter inspection. It is also proposed to build up a database of relay resources for communication data link, so as to provide real-time communication technical support for practical unmanned helicopter inspection.