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基于回归轨道的月球通导一体星座设计方法

Design of Lunar Communication-Navigation Integrated Constellation Based on Recursive Orbit

  • 摘要: 针对现有月球星座设计将通信和导航功能分开考虑,未能有效利用通导一体技术降低星座设计的整体成本的问题。综合考虑星座覆盖重数、通信性能和导航精度等约束,使用非支配排序遗传算法对轨道参数进行优化设计,提出一种基于回归轨道的月球通导一体星座设计方法。优化结果显示,通过12颗月球回归轨道卫星,即可实现全月面平均位置精度因子小于7及中高纬度区域全时段三重覆盖。所提方案可为未来月球探测活动提供兼具成本效益和技术优势的高速通信和高精度的定位导航服务,同时展现了通导一体技术在降低系统成本方面的潜力。

     

    Abstract: With the growing frequency and complexity of lunar exploration activities, there is a pressing need for high-rate communication services and precise navigation capabilities for targets on the lunar surface. Major spacefaring nations are currently working on developing lunar constellation architectures to address the demands of future mission requirements. However, existing lunar constellation designs have not fully leveraged the capabilities of integrated communication-navigation technologies, leading to less than optimal cost efficiency. This study introduces a novel methodology for designing lunar constellations based on recursive orbit. It utilizes a multi-objective optimization framework that concurrently evaluates coverage multiplicity, communication performance, and navigation accuracy constraints through a non-dominated sorting genetic algorithm. The optimization results indicate that a 12-satellite constellation can achieve full lunar surface coverage with an average Positioning Dilution of Precision (PDOP) below 7, while ensuring continuous triple coverage in mid-to-high latitudes throughout the lunar cycle. The proposed architecture provides a cost-effective solution for future lunar exploration by integrating communication and navigation functions. This research underscores the considerable potential of integrated communication-navigation technologies in optimizing lunar infrastructure development through synergistic design approaches.

     

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