输电线路无人机巡检数据链路通信系统设计

摘要

Aiming at impact of height and geographical conditions of unmanned aircraft inspection,the paper designs a data link communication system to handle breakage of territory,multi-path effects and declining of frequency selection and strong electromagnetic inference.Therefore,this article introduces and analyzes the components and function modules of the sys-tem.The system adopts coded orthogonal frequency division multiplexing (COFDM),high-speed data processing technology based on field programmable gate array(FPGA),high-linearity amplifier technology and data link control protocol technolo-gy,guaranteeing reliable and effective transmission of data collection and information control.%针对无人机巡检受飞行高度和地理条件遮挡的影响,设计了1套带中继链路的通信系统,克服地形阻挡、多径效应、频率选择性衰落和外界强电磁干扰的影响,为此,介绍和分析了该中继链路通信系统的组成和各项功能模块。该通信链路系统特别采用了编码正交频分复用(coded orthogonal frequency division multiplexing, COFDM)调制解调技术、基于(field programmable gate array,FPGA)的高速数据处理技术、高线性功放技术及满足特定要求的数据链路控制协议技术,大大保障了无人机巡检实现采集数据和控制信息的有效可靠传输。