摘要
TCP/IP协议在卫星通信中的应用受到越来越广泛关注。传输层TCP协议在星间链路中存在诸多问题,而UDP协议的简洁、快速、高效的特点,可以符合卫星通信的需求。该星载计算机采用MPC8260处理器,集成μC/OS-Ⅱ嵌入式实时操作系统,选用LwIP协议族,通信链路层采用Slip串口协议,利用Nrf 24E1ZigBee无线通信模块,搭建星间链路通信实验测试平台,实现传输层基于UDP协议的OBC与PC间的无线通信。实验结果证明,UDP协议具有较低的首部开销比,是一种较好的可选的星间链路协议。
In theses years,scientists have been paying more and more role on the satellite communication based on the TCP/IP protocol. There are many problems in the inter-satellite links when using the TCP protocol as the transporl la- yer, while the UI）P protocol is much more simple, convinenment and higer efficiency which can meet the demand of the satellite communication well. The processor on the on-board computer （OBC） is MPC8260, which integrates the μC/ OS-II embedded real-time operating system. It choises the LwIP protocol as the communicating protocal, and the Slip protocol as the link layer protocol, the Nrf 24E1 ZigBee as the wireless communicating tool. It sets up the inter-satellite link communication test platform, relizes the wireless communication between the OBC and PC based on the UDP proto- col. The result shows that the UDP protocol can perform well and is an optional protocol in the inter-satellite link.
出处
《计算机科学》
CSCD
北大核心
2013年第1期22-25,共4页
Computer Science
基金
国家高技术研究发展计划(863计划)(2012AA120603)资助
