低轨星座系统的可控波束到地功率通量密度研究

黄颖; 李伟; 简晨; 严康

doi:10.11959/j.issn.1000-0801.2022073

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低轨星座系统的可控波束到地功率通量密度研究

专题：卫星互联网 | 更新时间：2024-06-05

- 低轨星座系统的可控波束到地功率通量密度研究
- Research on power flux-density at the earth’s surface produced by emissions from the steerable beam of LEO constellation system
- 电信科学 2022年38卷第4期页码：49-58
- 作者机构：
- 作者简介：
  
  [ "黄颖（1968− ），女，国家无线电监测中心高级工程师，主要研究方向为空间无线电业务管理技术" ]
  [ "李伟（1984− ），男，博士，国家无线电监测中心高级工程师，主要研究方向为卫星通信系统的频率兼容技术、频谱共享技术" ]
  [ "简晨（1987− ），男，国家无线电监测中心高级工程师，主要研究方向为卫星通信系统频率兼容技术、卫星监测技术" ]
  [ "严康（1989− ），男，国家无线电监测中心高级工程师，主要研究方向为卫星通信系统的频率兼容技术、无线电监测技术" ]
- 基金信息：
  
  国家重点研发计划项目;The National Key Research and Development Program(2020YFB1806100);国家自然科学基金资助项目;The National Natural Science Foundation of China(91738101)
- DOI：10.11959/j.issn.1000-0801.2022073
  中图分类号： TN927.2
- 网络出版日期：2022-04，
  
  纸质出版日期：2022-04-20
- 稿件说明：
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黄颖, 李伟, 简晨, 等. 低轨星座系统的可控波束到地功率通量密度研究[J]. 电信科学, 2022,38(4):49-58.

Ying HUANG, Wei LI, Chen JIAN, et al. Research on power flux-density at the earth’s surface produced by emissions from the steerable beam of LEO constellation system[J]. Telecommunications science, 2022, 38(4): 49-58.
黄颖, 李伟, 简晨, 等. 低轨星座系统的可控波束到地功率通量密度研究[J]. 电信科学, 2022,38(4):49-58. DOI： 10.11959/j.issn.1000-0801.2022073.

Ying HUANG, Wei LI, Chen JIAN, et al. Research on power flux-density at the earth’s surface produced by emissions from the steerable beam of LEO constellation system[J]. Telecommunications science, 2022, 38(4): 49-58. DOI： 10.11959/j.issn.1000-0801.2022073.

摘要

功率通量密度是评估空间业务系统保护地面业务系统的一项干扰评价指标。给出了低轨星座系统可控波束的功率通量密度的计算方法和特定可控角下功率通量密度限值的符合性判定算法。在此基础上，提出了一种基于仰角遍历的功率通量密度限值的符合性判定算法。结合低轨星座系统的特征，论证了简化最大功率通量密度计算需要满足的条件。以Starlink系统为分析场景，计算分析了其Ka/E频段馈电波束的功率通量密度，并与SpaceX公开的结果对比验证了所提方法的正确性。结果表明，Starlink系统Ka频段馈电波束到地功率通量密度在仰角低于20°时不满足《无线电规则》规定的限值要求。

Abstract

The power flux-density (PFD) is an interference criterion for protecting terrestrial service systems from space service systems.A calculation method on the PFD produced by the emissions from the steerable beam of low earth orbit (LEO) constellation system was given

and thus a compliance determination algorithm of the limits of PFD under specific steering angle was presented.On this basis

a compliance determination algorithm of the limits of PFD based on elevation traversal was proposed.Combined with the characteristics of LEO constellation system

the conditions to simplify the calculation of maximum PFD of steerable beam were demonstrated.Taking the Starlink system as the typical scenario

the PFD produced by the gateway beam was analyzed

and the correctness of the proposed method was verified by comparison with the results published by SpaceX.The results showed that the PFD of the gateway beam of the Starlink system in Ka frequency band atelevations below 20° exceeded the limits given in Radio Regulations.

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references

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