摘要
针对小口径卫星天线收发信噪比低和使用受限问题,文章设计了一种基于自适应扩频编码调制(ASCM)技术的卫星通信实现方法,阐述了所设计方法的卫星通信系统架构、ASCM传输帧格式及ASCM参数调整算法。经测试验证,结果表明:此方法可以实现在较低信噪比下的卫星通信信息传输,并可以灵活地根据链路情况自适应调整ASCM参数,具有抗干扰能力强、频谱利用率高、参数切换时间短和无损业务传输等优点。
Considering the low signal-to-noise ratio(SNR) and application limitations of small-diameter satellite antennas, an implementation method of satellite communication is designed based on Adaptive Spread Spectrum Coded Modulation(ASCM) technology. The system architecture of satellite communication, ASCM transmission frame format and ASCM parameter adjustment algorithm are described in this paper. The results of tests and verification show that this design method can fulfill the transmission of satellite communication information under lower SNR, and can flexibly adjust ASCM parameters according to the link condition. It shows the advantages including strong anti-interference ability, high spectrum utilization rate, short parameter switching time, and lossless service transmission.
作者
安中文
郝晓强
时立锋
杨博
张华健
AN Zhongwen;HAO Xiaoqiang;SHI Lifeng;YANG Bo;ZHANG Huajian(Space Star Technology Co.,Ltd.,Beijing 100095,China)
出处
《航天器工程》
CSCD
北大核心
2020年第4期19-25,共7页
Spacecraft Engineering
基金
中央军委装备发展部领域基金项目(61402090106)。
