天地一体化信息网络 ›› 2022, Vol. 3 ›› Issue (2): 3-11.doi: 10.11959/j.issn.2096-8930.2022015

• 专题:卫星互联网空间载荷 • 上一篇    下一篇

低轨卫星通信系统波束成形算法

王海旺1,2,3, 黄晨光1,2,3, 邹诚1,2,3, 邵丰伟1,2, 常家超1, 李国通1,2,3   

  1. 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
  • 修回日期:2022-04-27 出版日期:2022-06-20 发布日期:2022-06-01
  • 作者简介:王海旺(1997-),男,中国科学院微小卫星创新研究院硕士生,主要研究方向为宽带数字相控阵
    黄晨光(1997-),男,中国科学院微小卫星创新研究院硕士生,主要研究方向为宽带多波束数字预失真
    邹诚(1995-),男,中国科学院微小卫星创新研究院博士生,主要研究方向为低轨卫星通信系统干扰规避
    邵丰伟(1992-),男,中国科学院微小卫星创新研究院高级工程师,主要研究方向为低轨卫星通信系统载荷设计
    常家超(1989-),男,中国科学院微小卫星创新研究院副研究员,主要研究方向为卫星导航技术、低轨卫星通信技术
    李国通(1970-),男,中国科学院微小卫星创新研究院研究员,博士生导师,主要研究方向为卫星导航和卫星通信

Beamforming Algorithm of LEO Satellite Communication System

Haiwang WANG1,2,3, Chenguang HUANG1,2,3, Cheng ZOU1,2,3, Fengwei SHAO1,2, Jiachao CHANG1, Guotong LI1,2,3   

  1. 1 Innovation Academy for Microsatellites of Chinese Academy of Sciences, Shanghai 201203, China
    2 University of Chinese Academy of Sciences, Beijing 100049, China
    3 ShanghaiTech University, Shanghai 201210, China
  • Revised:2022-04-27 Online:2022-06-20 Published:2022-06-01

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。

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

Abstract:

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.

Key words: LEO satellite, smart antenna, adaptive beamforming, low sidelobe beamforming

中图分类号: 

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