【摘要】 相比于传统的高轨高通量卫星和地面网络，低轨卫星互联网具有显著的广覆盖、低时延、宽带化、低成本等特点和优势，近年来各国均在积极布局，且呈现出加速部署、快速迭代、不断演进的特征，然而其急剧扩张的规模给系统设计和性能评估也带来挑战。通过对低轨星座系统的发展现状和基于模型的系统工程方法（MBSE）在相关领域的应用的调研，分析了低轨星座系统设计论证的关键要素，采用MBSE方法构建了星座系统的设计建模与评估流程，进一步介绍了低轨星座系统数字化设计需要解决的关键技术，最后讨论了相关方法在低轨星座系统设计上的应用前景。更多还原

【Abstract】 Compared to traditional high-throughput satellites and ground networks, low earth orbit(LEO) satellite Internet offers significant advantages such as wide coverage, low latency, broadband capacity, and cost-effectiveness. In recent years, countries worldwide were actively deployed LEO constellation systems, and were characteristics of accelerated deployment, rapid iteration, and continuous evolution. However, the rapid expansion of these systems also posed elaborated challenges for system design and performance evaluation. Through the investigatione of the development status of LEO constellation systems and application of model-based system engineering(MBSE) in relevant fields, the key elements of their design were elaborated, then a MBSE process to construct the design model of constellation systems along with the performance evaluation was demonstrated. Additionally, the key technologies that need to be addressed in LEO constellation system design was discussed. Finally, the application of relevant methods in the design of LEO constellation systems was prospected.更多还原