Ka频段宽带互联网星座系统间上行同频干扰分析研究

Analysis of Uplink Co-frequency Interference in Ka Band between Broadband Internet Constellation Systems

针对Ka频段星座系统之间的上行同频干扰问题,以干噪比为干扰评价指标,建立了星座系统间的上行干扰分析数学模型,设计了一对一和一对多的干扰仿真场景。以OneWeb系统和O3b系统为例,仿真分析了一对一和一对多干扰场景下两个系统之间相互干扰情况以及地球站间距对干扰结果的影响。

Aiming at the problem of uplink co-frequency interference between constellation systems in Ka band,a mathematical interference analysis model was established based on I/N as the evaluation criteria,and one-to-one link and one-to-multiple links interference simulation scenarios were proposed.Taking OneWeb system and O3B system as examples,the interference between these two systems are simulated under one-to-one link and one-to-multiple links scenarios,and the impacts of the earth station distance on the interference result are analyzed.