基于星间可见性的振动监测可视化仿真研究
2023,31(9):297-304
摘要：星间激光通信已经成为现如今的发展热潮，星间链路容易受到外界环境或卫星本体的振动影响，致使通信质量受损；在卫星的轨道建模以及可视化领域，传统方案极少引入卫星平台振动对链路的影响，无法满足未来星网仿真的需求；为反应星间链路通信过程中平台振动对其的影响，提出了星间激光链路状态模型，主要对地心角、激光功率、以及平台振动等主要参数进行了研究；实验验证了星间可见性方法的计算准确性和功能有效性，分别对方位角、俯仰角、星间距离进行误差对比验证，其中方位角和俯仰角误差控制在30μrad以内，星间距离误差控制在110m以内，并通过振动叠加实验，验证了卫星平台振动对链路干扰的程度，较好的还原星间链路的真实情况。
关键词：星间可见性；平台振动；ATP系统；链路状态；可视化仿真
Research on Visualization Simulation of Vibration Monitoring Based on Inter-satellite Visibility
Abstract：Inter-satellite laser communication has become a development boom nowadays, and inter-satellite links are easily affected by the vibration of the external environment or the satellite body, resulting in damage to the communication quality. In the field of satellite orbit modeling and visualization, traditional solutions rarely introduce the influence of satellite platform vibration on the link, which cannot meet the needs of future star network simulation. In order to reflect the influence of platform vibration during inter-satellite link communication, an inter-satellite laser link state model is proposed, which mainly studies the main parameters such as geocentric angle, laser power and platform vibration. The calculation accuracy and functional effectiveness of the inter-satellite visibility method are verified by experiments, and the error comparison and verification of the azimuth angle, elevation angle and inter-star distance are respectively. The error of azimuth angle and elevation angle is controlled within 30 μrad, and the error of inter-satellite distance is controlled within 110m. Through vibration superposition experiment, the degree of satellite platform vibration interference to link is verified, and the real situation of inter-satellite link is well restored.
Key words：interplanetary visibility; platform vibration; ATP system; link state; visual simulation
收稿日期：2023-04-10
基金项目：上海市2022年度“科技创新行动计划”高新技术领域项目（22511100502）
