诱发卫星深层充电的高能电子环境模式研究

文章介绍了与卫星介质深层充电相关的辐射带高能电子环境的主要特征和规律,建立了相应的高能电子环境模式及软件,并运用该模式针对某飞行器的深层充放电危险性进行了分析和评估。结果表明该模式相对于AE8模式更好地反映了高能电子环境的动态特征,与欧空局建立的FLUMIC模式符合较好。该模式与深层充电分析模型相结合,可用于对航天器的充放电异常进行在轨诊断,以及在工程上针对深层充电进行防护设计。

A space energetic electron environment model for spacecraft deep dielectric charging evaluation

In this paper,the main characteristics of high-energy electrons in the radiation belt are studied,which is related with deep dielectric charging on satellites. A model for radiation belt electrons is proposed to evaluate the risk of a certain vehicle's deep dielectric discharging during its passing through the radiation belt. The results show that the model's performance is better than that of AE8 in representing dynamic characteristics of energetic electrons and good agreement is obtained with ESA's FLUMIC. By combining with analytic models for deep dielectric charging,our model may be useful in on-orbit diagnostics of charging and discharging anormalies and for protection designs.