摘要
深空测控通信中,接收信号微弱,信号时延巨大,使得深空测控与地球轨道航天器的测控有很大差异,选择合理的测距信号体制,对深空测控系统具有极其重要的意义。在对NASA及ESA的几种测距信号体制进行介绍的基础上,分析比较了几种深空系统测距信号体制,并对深空测控系统测距信号体制提出初步想法。
The signals received by deep space TT＆C and communication system are weak and featured by large delay, thus making the TT＆C system for deep space spacecrafts being very different from that for spacecrafts on earth orbit. It is important for deep space TT＆C system to select the reasonable ranging signal system. Based on introduction to several ranging signal systems in NASA and ESA, the deep space ranging signal systems are analyzed and compared, and the primary ideal is proposed.
出处
《电讯技术》
2008年第5期1-6,共6页
Telecommunication Engineering
关键词
深空探测
测控通信
测距信号体制
分析与比较
deep space exploration
TT＆C and communication
ranging signal systems
analysis and comprison
