低轨卫星激光载荷配置及快速建链方法的研究

Research on configuration of laser payload for LEO satellites and rapid link establishment method

为了适应未来低轨卫星轻量化和低成本的发展趋势,满足星间激光快速建链的使用需求,对星间激光配置原则进行了分析,采用转台式激光载荷和固定式激光载荷相结合的载荷配置方式,分别用于异轨道面间和同轨道面内的星间建链,设计了基于在轨恒星标校、信标光辅助建链和光轴一致性的激光载荷快速星间建链方案,并介绍了全流程。结果表明,星间激光载荷建链时间小于30 s,可实现长时间的星间激光稳定跟踪通信。该研究结果有助于推动星间激光通信的发展和大规模在轨应用。

In order to adapt to the development trend of lightweight and low-cost low earth orbit(LEO)satellites and meet the demand for rapid laser inter-satellite link establishment,a payload configuration method combining a rotatable laser payload and a fixed laser payload was adopted based on the analysis of inter-satellite laser configuration principles,used for inter-plane link establishment and intra-plane link establishment respectively.A fast inter-satellite link establishment method and process for laser payloads based on in-orbit star calibration,beacon light-assisted link establishment,and optical axis consistency design were introduced.In-orbit experimental data show that the inter-satellite laser payload link establishment time can be less than 30 s,which can achieve stable and continuous inter-satellite laser communication.The study is helpful for promoting the development and large-scale in-orbit application of inter-satellite laser communication.