本文基于平流层通信的特点及发展现状,结合通信中继在应急通信等领域的优势,提出了一种适应平流层平台的通信中继系统架构,对系统架构、工作原理进行了描述,并对同构/异构体制间的中继技术、语音编码及静音检测等关键技术进行了分析与论述。 Based on the characteristics and development status of stratospheric communication, combined with the advantages of communication relay in emergency communications, this paper proposes a communication relay system architecture adapted to the stratospheric platform, and describes the system architecture and working principle. The key techniques of isomorphism / inter-isomer relay technology, speech coding and silence detection are analyzed and discussed.