摘要
介绍了邻近空间链路协议(Proximity-1space link protocol)的分层模型和业务类型。从3个方面分析了在我国火星探测任务中应用邻近空间链路协议的优势:首先提出了火星探测中在轨道器和漫游车之间建立邻近空间链路的典型应用,其次分析了邻近空间链路在解决远距离传输信号衰减和延时问题上起到了一定的作用,最后说明了邻近空间链路比高级在轨系统(AOS)空间数据链路更适合于火星探测任务。文章进一步设计了邻近空间链路协议的传输帧结构,提出了数据传输帧的几种端口路由策略以及数据链路的差错控制方式。
Layered model and service types of Proximity-1 space link protocol are described in this paper. The advantage of using Proximity-1 space link protocol in Mars exploration project is ana- lysed in three aspects. Firstly, the typical application of establishing Proximity-1 space link be- tween the orbiter and the rover is advanced. Secondly, the link plays a significant role in solving the problem of signal attenuation and delay intervening remote transmission. Finally, Proximity- 1 space link is a more appropriate link used in Mars exploration than AOS space data link. In ad- dition, the data structure of transfer frame used in Proximity-1 space link protocol is designed. The strategy for routing transfer frame from some ports and the error control method of data link are presented.
出处
《航天器工程》
北大核心
2015年第2期74-80,共7页
Spacecraft Engineering
关键词
邻近空间链路协议
火星探测
协议数据单元
邻近链路传输单元
端口路由
Proximity-1 space link protocol
Mars exploration
protocol data unit
proximity link transmission unit
port route
作者简介
张红军，男，工程师，研究方向为遥感和深空探测星载软件及其可靠性、空间通信链路。Email：zhanghjbuaa@sina.com
