面向低轨互联网星座的频率干扰仿真研究  

Simulation Research of Frequency Interference for Low Earth Orbit Satellite Constellation Networks

作　　者：余文科[1] 程媛[1] 李伟[2] YU Wen-ke;CHENG Yuan;LI Wei(Chinese Institute of Electronics,Beijing 100036,China;The State Radio Monitoring Center,Beijing 100037,China)

机构地区：[1]中国电子学会,北京100036 [2]国家无线电监测中心,北京100037

出　　处：《中国电子科学研究院学报》2022年第5期501-507,共7页Journal of China Academy of Electronics and Information Technology

摘　　要：低轨卫星互联网星座发展迅猛,使得空间频轨资源的受限情况越发严重,同频干扰分析问题值得重视。由于其具有规模大、动态性强、空间立体分布、波束体制灵活等特点,低轨卫星互联网星座系统之间的同频干扰场景与传统同频干扰场景有很大不同。文中针对低轨卫星互联网星座间干扰场景建立了统一的多波束分析模型。为评估实际卫星互联网系统的干扰影响,基于Matlab自动计算平台对Starlink星座和OneWeb星座间的下行通信频率干扰场景进行了仿真分析,结果表明低轨卫星互联网星座在大部分时间里会对其他同频星座造成严重干扰,引起通信质量的大幅下降。The rapid development of low-orbit Internet constellations has made the limitation of space frequency and orbit resources. The analysis of co-channel interference deserves attention. Due to its large scale, strong dynamics, three-dimensional spatial distribution, and flexible beam system, the co-frequency interference scenarios between low-orbit Internet constellation systems are very different from those between traditional geostationary orbit satellites. This article establishes a unified multi-beam analysis model for the LEO communication constellation interference scenarios. The downlink interference scenario between the Starlink constellation and OneWeb constellation was simulated and analyzed with an automated computing platform with MATLAB. The results showed that the low-orbit Internet constellation would cause serious interference to other co-frequency constellation, causing a significant drop in communication quality.

关 键 词：同频干扰分析 低轨互联网星座 卫星通信 

分 类 号：TN927[电子电信—通信与信息系统]