SLE服务模型及应用研究

Research on SLE Service Model and Application

空间链路扩展(SLE)服务将CCSDS空间链路协议扩展到地面要素之间,完成空间链路数据单元在空间链路信道和地面用户之间的传输,从而建立标准的空间数据传输与管理接口,降低了数据交换业务在技术、管理以及操作方面所需的代价。本文研究了SLE参考模型和其2个重要服务RAF和CLTU,并在"嫦娥一号"绕月探测工程中进行了应用,实现了基于SLE技术的CLTU和RAF服务。

Space Link Extension(SLE) extends CCSDS space link protocol to ground elements,transports space link data unit from space link channel to ground users,and builds standard space data transportation and management interface.At the same time,it decreases cost in technology,management and operation.This paper is a study on the SLE reference model and two important services RAF and CLTU,which were successfully used in CE-1 mission to transmit telemetry signals to ESA tracking station and then relay commands to the spacecraft.