NGSO星座Q/V波段星间链路干扰规避技术
Chinese Journal of Space Science（2023）
中国科学院国家空间科学中心
Abstract
随着大规模星座系统的发展,近地轨道空间频轨资源越来越紧缺.随之而来的星载通信链路干扰风险不容忽视,已成为今后星座系统设计需要重点考量的指标之一.在规避干扰的前提下,保证星座系统的工作性能至关重要.针对大规模非静止轨道(NGSO)星座系统星间链路存在的干扰风险问题,提出了基于干扰、受扰链路夹角的干扰规避方法.以Starlink的Q/V波段星间链路为例,定义了系统效率与工作效率,研究不同干扰规避方法与建链策略下系统的鲁棒性.仿真结果表明,基于受扰链路夹角的干扰规避方法能够在不同建链策略下将系统干扰噪声比I/N超限时长分别从5.79％和16.75％降至0,并且不影响工作链路.这种仿真方法对于类似具有星间链路的大规模NGSO星座系统的干扰规避具有借鉴意义.
MoreKey words
Global Navigation Satellite Systems
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