机载低轨卫星通信发展及关键技术综述

卫星通信是保障机载平台远程飞行的主要通信手段。低轨卫星通信具有传输损耗小、传输时延短、卫星发射灵活、能全球覆盖等优点，已成为机载卫星通信领域的研究热点。梳理了国内外机载低轨卫星通信技术发展历程，开展了机载低轨卫星通信应用分析，重点从相控阵天线、信号同步、编码调制、接入与切换等方面阐述了机载低轨卫星通信需要解决的关键技术，探讨了机载低轨卫星通信发展趋势，可为机载低轨卫星通信系统建设应用提供借鉴。

Development and Key Technologies of Airborne LEO Satellite Communication:a Review

Satellite communication is the main communication method to guarantee long-range flight of airborne platform.Low Earth orbit(LEO) satellite communication with characteristics of low transmission loss,short transmission delay,flexible launch and global coverage,is the current research hotspot in the field of airborne satellite communication.The authors introduce the development history and research status of airborne LEO satellite communication at home and abroad,carry out its application analysis,review its key technologies including phased array antenna,signal synchronization,coded modulation,access and handover,and analyze its development trends.The research results can provide reference for construction and application of airborne LEO satellite communication.