论文名称为“LEO satellite multibeam coverage area division and beamforming method”。低轨卫星通信仰角大，导致不同角度的路径损耗差异大，现有的多波束覆盖区域划分方法难 以满足对大角度区域等效全向辐射功率的覆盖要求。为此，本文提出了自外向内的波束覆盖区域划分策略，结合子阵式多波束赋形方法，在满足通道一致性的条件下，实现了对地等通量大范围多波束最优覆盖，大为提升了现有波束成形方法整体效率。在此基础上，提出了基于深度优先搜索的频率复用分色算法，解决了非均匀多波束间低互扰分色问题。设计出了52个波束，12色频率复用，覆盖区域±55°，满足单波束边缘EIRP不低于25.5dBW，载干比不低于16dB。工作主要完成人钟开源、程钰间、杨海宁、郑斌。

论文链接：https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9495105

Abstract—The low-orbit satellite has a large communication angle, resulting in a large difference in path loss at different angles. The existing multibeam coverage area division method cannot meet the coverage requirement of the effective isotropic radiated power (EIRP) in these large-angle areas. Therefore, this letter proposes a method for dividing the beam coverage area from the outside to the inside. Combined with the subarray multibeam forming method, it achieves the optimal coverage of isoflux multiple beams to the ground with unchanged output power of the transmitter, which greatly improves the overall efficiency of existing beamforming methods. At the meantime, a frequency reuse color separation algorithm based on the depth first search is proposed to reduce the mutual interference among nonuniform multiple beams. As an example, 52 beams with 12-color frequency reuse are designed to cover ±55°. The edge EIRP of a single beam is no less than 25.5 dBW and the carrier-to-interference ratio is no less than 16 dB.

Index Terms—Frequency reuse color separation, low-orbit (LEO) satellite, multibeam coverage area division, multibeam forming.