摘要
为保证深空探测载人航天器与地面之间的可靠通信,在分析载波频率、信源压缩技术、编码技术和调制方式的基础上,提出了一种载人航天器深空通信系统架构,综合考虑各种通信业务的需求,采用LDPC编码、SOQPSK调制等先进技术,充分利用深空通信信道宽带宽的特点。相比于现有的深空探测航天器,文章提出的深空通信系统架构可获得更高的增益,能以更高的数据速率进行可靠通信,具有一定的技术前瞻性和较高的工程应用价值,对我国后续载人登月及其他深空飞行任务具有一定的参考意义。
For reliable communication between manned spacecraft and the earth, based on the analysis of carrier wave frequency, source compression, channel coding and signal modulation techniques,a structure of deep space communication system for manned spacecraft is proposed, taking various communication requirements into consideration, which adopts advanced techniques LDPC and SOQPSK and fully uses the broad bandwidth. Compared to launched deep space space- craft, it can obtain higher gain and communicate at higher data speed with certain technical pros- pect and high engineering application value. It also has significance in subsequent human moon landing and other deep space voyage of China.
出处
《航天器工程》
2013年第6期18-23,共6页
Spacecraft Engineering
基金
国家重大科技专项工程
关键词
载人航天器
深空通信系统
信道编码
信源压缩
信号调制
manned spacecraft
deep space communication system
channel coding
source com-pression
signal modulation
