基于IRI模型的卫星环境仿真方法研究
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摘要
针对卫星所运行电离层等离子体环境的分析要求,搭建了一个以MATLAB软件为核心,以国际参考电离层(IRI)模型的MEX封装、卫星工具包(STK)为计算仿真模块的多源交互环境。以一颗500km高的太阳同步轨道卫星为例,结合卫星的实际任务运行,对卫星运行的等离子体中的电子密度、电子温度、离子温度等重要参数进行了仿真分析。仿真结果表明,此方法可以基于IRI模型较为精确、高效地分析卫星的等离子体环境参数。该方法还能推广到地磁场、大气层、磁层、地球辐射带、太阳风等其他卫星运行环境的分析,为卫星的总体任务分析提供直接的支持。
In order to satisfy the analysis requirement for ionospheric plasma environment,an interactive simulation platform is established,in which MATLAB is used as the kernel while both of MEX-encapsulated IRI(International Reference Ionosphere) model and STK(Satellite Tool Kits) are used as interactive simulation unit.To demonstrate the method,a satellite in 500km sun-synchronous orbit is used as an example for analyzing the important in-situ parameters such as electron density,electron temperature and ion temperature.The simulation result shows that this interactive simulation method can be used to analyze satellite in-situ ionospheric plasma environment in a more effective and accurate way.And the method could be extended to other orbiting environments such as geomagnetic field,atmosphere,magnetosphere,radiation belt and solar wind so as to provide basic support for satellite system-level mission analysis.
引文
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