风云三号A/B星空间环境监测器对空间天气事件监测能力评估及其应用研究

摘要

The space environment monitor (SEM), onboard the Chinese meteorological satellites FengYun-3A/B, has the abilities to measure proton lfux in 3-300 MeV energy range and electron lfux in 0.15-5.7 MeV energy range. SEM can also detect the heavy ion compositions, satellite surface potential, the radiation dose in sensors, and the single events. The space environment information derived from SEM can be utilized for satellite security designs, scientific studies, development of radiation belt models, and space weather monitoring and disaster warning. In this paper, the SEM’s instrument characteristics are introduced, and the postlaunch calibration algorithm is presented. The applications in monitoring space weather events and the service for manned spacelfights are also demonstrated.%中国气象卫星风云三号A/B星上的星载空间环境监测器（SEM），具有探测3～300兆电子伏（Mev）能量范围的质子通量和0.15～5.7Mev能量范围的电子通量的能力。同时该监测器可以探测重离子组成成分，卫星表面电位，传感器累积的辐射剂量以及单粒子事件。从监测器中得到的空间环境信息可以用来进行卫星安全设计、科学研究、辐射带模型开发研究，以及空间天气监测和灾害预警。介绍了监测仪器的特性和在轨期间的定标算法，以及在空间天气事件监测和载人航天飞行服务中的应用范例。