卫星移动通信星座系统的建模/仿真

Modeling/Simulation in Satellite Constellation of Mobile Communication System

卫星移动通信系统常采用星座的方式构建,能够实现真正意义上的全球覆盖。它是一个复杂的系统,其核心星座系统部分的设计过程中需考虑时间、空间覆盖特性,进行链路和成本分析等,单纯的数学计算难以集成化地对设计过程的各方面以及设计方案进行全面、直观的分析,因此采用现代仿真技术,基于HLA/RTI和STK,建立卫星移动通信星座仿真系统,通过XML方式灵活的存取数据库中的模型数据和配置方案,进行星座系统设计,并对设计方案进行实时或超实时的仿真运行,得到全面的分析、评估结果,仿真系统具有直观的二维、三维场景和曲线、报表显示功能,可为卫星移动通信星座系统的设计提供一个集成化、可视化的仿真试验平台,并可在一定程度上支持其他卫星星座设计。

Satellite Mobile Communication is one of the key means of modern communication. Using satellite constellation, the true globe mobile communication can come into being. Coverage performance both in time and space, communication chains, total cost and so on factors should be synthetically considered during the process of system design and construct. It is difficult to have an all-sided and visible analytical result of all these aspects simply using mathematical method. Thus, based on modern modeling/simulation technology, the satellite constellation communication simulation system was constructed using HLA/RTI and STK. The system can obtain and save model data and configure schemes in database conveniently using XML interface. The schemes can be reconfigured and simulated in real-time or faster-than-real-time to get comprehensive evaluation result. Vivid two-dimensional and three-dimensional scene, report and curve were also provided. It affords satellite constellation communication system a general simulation and testing platform, and also supports other satellite constellation system design in a certain extent.