卫星移动通信系统抗干扰研究

Research on anti-interference of satellite mobile communication system

目前低轨卫星互联网正在蓬勃发展,可以预见,未来一定时期内,全球无缝覆盖、高低轨融合将成为卫星移动通信发展的新趋势。文章在分析和论述卫星移动通信系统主用的L,S频段规划和使用现状的基础上,针对卫星移动通信系统面临的电磁干扰,开展系统抗干扰技术研究,重点研究分析了扩频通信、星上处理、频谱感知与干扰规避、自适应调零天线、捷变波束通信等抗干扰技术,提出了星地一体化的体系抗干扰方案,可有效提高系统整体抗干扰能力。

At present,the low-orbit satellite Internet is booming,and it is foreseeable that in a certain period of time in the future,seamless global coverage and high-low orbit integration will become a new trend in the development of satellite mobile communications.Based on the analysis and discussion of the main L and S frequency bands used by the satellite mobile communication system and the current situation of use,this paper conducts research on the system anti-interference technology for the electromagnetic interference faced by the satellite mobile communication system,focuses on the research and analysis of anti-interference technologies such as spread spectrum communication,onboard processing,spectrum sensing and interference avoidance,adaptive zero antenna,agile beam communication,etc.,and proposes a satellite-ground integrated anti-interference technology.The interference scheme can effectively improve the overall anti-interference ability of the system.