低轨卫星通信系统波束成形算法  

Beamforming Algorithm of LEO Satellite Communication System

作　　者：王海旺 黄晨光 邹诚 邵丰伟 常家超 李国通 WANG Haiwang;HUANG Chenguang;ZOU Cheng;SHAO Fengwei;CHANG Jiachao;LI Guotong(Innovation Academy for Microsatellites of Chinese Academy of Sciences,Shanghai 201203,China;University of Chinese Academy of Sciences,Beijing 100049,China;ShanghaiTech University,Shanghai 201210,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201203 [2]中国科学院大学,北京100049 [3]上海科技大学,上海201210

出　　处：《天地一体化信息网络》2022年第2期3-11,共9页Space-Integrated-Ground Information Networks

摘　　要：宽带卫星互联网的迅速发展使得卫星通信进入新纪元,大规模低轨卫星星座的建立使得频谱资源逐渐饱和,频率使用的高度重合导致各个卫星通信系统间存在严重的干扰问题。卫星载荷通常使用相控阵天线进行通信,通过收发端波束成形来降低系统干扰。在接收端采用自适应波束成形算法,通过自适应调零来抑制干扰;在发送端采用低旁瓣波束成形算法,通过对旁瓣施加特定的约束压低旁瓣电平来降低干扰。针对地面接收端和卫星发送端分别分析3种抗干扰波束成形算法,为降低卫星通信系统的干扰问题提供波束层面的方法。The rapid development of broadband satellite internet has brought satellite communication into a new era.The establishment of large-scale low-orbit satellite constellations has gradually saturated spectrum resources,and the high overlap in frequency use has led to serious interference problems between satellite communication systems.Satellite payloads typically communicate using phased-array antennas,which reduce interference by beamforming at the receiving and transmitting ends.The adaptive beamforming algorithm was used at the receiving end to suppressed interference by adaptive zeroing;The low sidelobe beamforming algorithm was used at the transmitting end,which reduced the interference by imposing specifi c constraints on the sidelobes to suppressed the sidelobe level.Three anti-jamming beamforming algorithms were introduced for the ground receiving end and the satellite sending end respectively,which provided a beamlevel method for reduced the interference between satellite communication systems.

关 键 词：低轨卫星 智能天线 自适应波束成形 低旁瓣波束成形 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]