星载被动辐射测量与地面 Next-G 网络的频谱共存
Spectrum Coexistence of Satellite-borne Passive Radiometry and Terrestrial Next-G Networks
AI总结：
本研究基于随机几何开发了一个评估框架，用于分析地面 Next-G 网络对星载遥感卫星的射频干扰，发现只要避免干扰天线主瓣，大量基站集群即可在受限 L 波段与 SMAP 卫星实现频谱共存。
摘要：
地面 Next-G 蜂窝网络与星载遥感（RS）之间的频谱共存正日益受到关注。一个主要问题是这将如何影响 RS 设备。在本研究中，我们开发了一个基于随机几何的框架，用于评估在与 RS 卫星相同频段运行的大规模地面 Next-G 网络产生的射频干扰（RFI）的统计特性。作为示例，我们考虑了一个在受限 L 波段（1400-1427 MHz）运行的网络，以及 NASA 的 Soil Moisture Active Passive (SMAP) 卫星，这是在该频段活跃的最新 RS 卫星之一。我们使用 Thomas Cluster Process (TCP) 来建模蜂窝基站集群在 SMAP 天线主瓣和旁瓣上产生的 RFI。我们证明，大量活跃集群可以在受限 L 波段运行而不损害 SMAP 的任务，前提是它们避免干扰其天线的主瓣。这得益于 SMAP 极低的旁瓣天线增益。
英文摘要：
Spectrum coexistence between terrestrial Next-G cellular networks and space-borne remote sensing (RS) is now gaining attention. One major question is how this would impact RS equipment. In this study, we develop a framework based on stochastic geometry to evaluate the statistical characteristics of radio frequency interference (RFI) originating from a large-scale terrestrial Next-G network operating in the same frequency band as an RS satellite. For illustration, we consider a network operating in the restricted L-band (1400-1427 MHz) with NASA's Soil Moisture Active Passive (SMAP) satellite, which is one of the latest RS satellites active in this band. We use the Thomas Cluster Process (TCP) to model RFI from clusters of cellular base stations on SMAP's antenna's main- and side-lobes. We show that a large number of active clusters can operate in the restricted L-band without compromising SMAP's mission if they avoid interfering with the main-lobe of its antenna. This is possible thanks to SMAP's extremely low side-lobe antenna gains.
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