NGSO通信星座系统间同频干扰场景与建模研究

doi:10.11959/j.issn.2096-8930.2021003

天地一体化信息网络 ›› 2021, Vol. 2 ›› Issue (1): 20-27.doi: 10.11959/j.issn.2096-8930.2021003

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NGSO通信星座系统间同频干扰场景与建模研究

李伟¹, 严康¹, 耿静茹², 王文²

¹ 国家无线电监测中心，北京 100037
² 中国科学院信息工程研究所，北京 100093

修回日期:2021-03-05 出版日期:2021-03-20 发布日期:2021-03-01
作者简介:李伟（1984-），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/移动通信系统的频率兼容技术、干扰减缓技术。
严康（1989-），国家无线电监测中心工程师，主要研究方向为卫星通信系统/移动通信系统的频率兼容技术、干扰减缓技术。
耿静茹（1996-），中国科学院信息工程研究所博士生，主要研究方向为卫星通信干扰。
王文（1988-），中国科学院信息工程研究所高级工程师，主要研究方向为电磁环境安全感知、卫星系统频率兼容性分析。
基金资助:
国家重点研发计划(2020YFB1806100);国家自然科学基金(91738101)

Research on Scenarios and Modeling of Co-Frequency Interference Between NGSO Communication Constellation Systems

Wei LI¹, Kang YAN¹, Jingru GENG², Wen WANG²

¹ The State Radio Monitoring Center, Beijing 100037, China
² Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China

Revised:2021-03-05 Online:2021-03-20 Published:2021-03-01
Supported by:
The National Key Research and Development Program(2020YFB1806100);The National Natural Science Foundation of China(91738101)

摘要/Abstract

摘要：

针对非静止轨道（NGSO）通信星座系统存在的严重频率重叠问题，在综合阐述典型系统频率资源规划使用现状的基础上，全面分析多个NGSO通信星座系统同频共用情形下潜在的干扰场景，并对每个场景下发生干扰风险的可能性进行初步定性评估。根据干扰场景特征，探讨NGSO通信星座系统之间同频干扰分析的关键参数和模型，并给出3种不同评价指标的同频干扰计算模型，最后指出NGSO通信星座系统间同频干扰分析面临的挑战以及重点研究方向。研究结果可为NGSO通信星座系统之间的兼容共存提供参考。

关键词: 频率资源, NGSO通信星座系统, 同频干扰, 干扰场景, 干扰评价指标

Abstract:

Aiming at the serious problem of frequency overlapping among non-geostationary satellite orbit (NGSO) communication constellation systems.The potential interference scenarios under multiple NGSO communication constellation systems sharing the same spectrum band was comprehensively analyzed, with the aid of analyzing frequency plan of typical constellation systems.Then the possibility of interference risk in each scenario was qualitatively evaluated.According to the characteristics of interference scenarios, the key parameters and models for the co-frequency interference analysis between the NGSO communication constellation systems were discussed, and the computing models of co-frequency interference based on three diff erent protect criterion were presented.Finally, challenges and key research directions of co-frequency interference analysis between NGSO communication constellation systems were pointed out.The research can provide a reference for the study of compatibility and coexistence between broadband Internet constellation systems.

Key words: frequency resource, NGSO communication constellation system, co-frequency interference, interference scenario, interference evaluation criterion

中图分类号:

TN91

李伟, 严康, 耿静茹, 王文. NGSO通信星座系统间同频干扰场景与建模研究[J]. 天地一体化信息网络, 2021, 2(1): 20-27.

Wei LI, Kang YAN, Jingru GENG, Wen WANG. Research on Scenarios and Modeling of Co-Frequency Interference Between NGSO Communication Constellation Systems[J]. Space-Integrated-Ground Information Networks, 2021, 2(1): 20-27.

图/表 8

表1

图1

表2

干扰场景划分及干扰风险定性分析"

对比项	NGSO_A的信关站发射机	NGSO_A的卫星发射机	NGSO_A的用户终端发射机
	①信关站→信关站	②卫星→信关站	③用户终端→信关站
NGSO_B的信关站接收机	零干扰风险，除非双向使用频段（频段既可用作上行链路，也可用作下行链路）。即使频段被双向使用，风险也可忽略不计。因为信关站均处于地面，它们指向卫星的天线波束具有良好的角度分离，且信关站天线彼此可以保持足够的距离	有干扰风险，当NGSO_A的下行链路传输与NGSO_B信关站期望的下行链路传输共信道且波束对准时，NGSO_A对NGSO_B的接收造成干扰	零干扰风险，除非双向使用频段。即使频段被双向使用，风险也很小。因为信关站和用户终端都处于地面，它们指向卫星的天线波束具有良好的角度分离，但这取决于用户终端和信关站之间的距离
	④信关站→卫星	⑤卫星→卫星	⑥用户终端→卫星
NGSO_B的卫星接收机	有干扰风险，当NGSO_A的上行链路传输与NGSO_B卫星接收机期望的上行链路传输共信道且波束对准时，NGSO_A对NGSO_B的接收造成干扰	零干扰风险，除非频段被双向使用或一个系统使用FSS频段进行卫星间业务。风险有限，但当其他卫星系统试图增加星间链路，干扰风险将会增大	有干扰风险，当NGSO_A的上行链路传输与NGSO_B卫星接收机期望的上行链路传输共信道且波束对准时，NGSO_A对NGSO_B的接收造成干扰
	⑦信关站→用户终端	⑧卫星→用户终端	⑨用户终端→用户终端
NGSO_B的用户终端接收机	零干扰风险，除非双向使用频段。即使频段双向使用，风险也很小。因为信关站和用户终端都在地面，它们指向卫星的天线波束具有良好的角度分离，但这取决于从信关站到用户终端的距离	有干扰风险，当NGSO_A的下行链路传输与NGSO_B用户终端接收机期望的下行链路传输共信道且共线时，NGSO_A对NGSO_B的接收造成干扰	零干扰风险，除非双向使用频段。即使频段双向使用，风险也很小，因为用户终端都处于地面，因此它们指向卫星的天线波束具有良好的角度分离，但这取决于用户终端之间的距离

表2

图2

图3

图4

图5

表3

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星座名称	卫星数量/颗	轨道高度/km	申请频段
O3b	42	8 062	Ku/Ka
OneWeb	720	1 200	Ku/Ka/V
Starlink	4 409	550、1 110、550、540、560、570	Ku/Ka/V
Starlink	7 518	345.6、340.8、335.9	V
Kuiper	3 236	590、610、630	Ka
Telesat	117	1 000、1 248	Ka/V

建议书编号	描述
ITU-R P.341	无线电链路传输损耗概念
ITU-R P.525	自由空间衰减的计算
ITU-R P.526	绕射传播
ITU-R P.530	设计地面视距系统所需的传播数据和预测方法
ITU-R P.618	雨衰模型
ITU-R P.676	大气层衰减
ITU-R P.840	云雾模型
ITU-R P.619	对流层闪烁模型

NGSO通信星座系统间同频干扰场景与建模研究

Research on Scenarios and Modeling of Co-Frequency Interference Between NGSO Communication Constellation Systems

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