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题名: Spacecraft Surface-Charging Risk Index in Auroral Region
作者: Meng, Xuejie; Chen, Dong; Shi, Liqin; Liu, Siqing; Chen, Shanqiang
作者部门: 空间环境部
通讯作者: Meng, XJ (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100191, Peoples R China.
关键词: Low earth orbit (LEO) satellite ; space environment effects ; spacecraft charging ; space-plasma environment
刊名: IEEE TRANSACTIONS ON PLASMA SCIENCE
ISSN号: 0093-3813
出版日期: 2017
卷号: 45, 期号:8, 页码:2013-2018
收录类别: SCI
项目资助者: Chinese Academy of Sciences [Y6213CEG7S]
英文摘要: High-level spacecraft surface charging, which is frequently observed in the auroral region, may lead to electrostatic discharges and result in significant damage to the satellite. In this paper, we present preliminary results on the relationship between low earth orbit surface-charging events and the geomagnetic activity indices. The surface-charging events in the auroral regions are identified and listed based on precipitating ion/electron energy spectra measured by the Defense Meteorological Satellite Program spacecrafts in 2011-2014. Furthermore, the charging features (i.e., duration, charging level, and location) are investigated. The charging frequency distribution with respect to Kp, Ap, Dst, and AE are analyzed. It is shown that the charging frequency increases with increasing Kp index. The occurrence frequency of charging events with respect to Kp and magnetic local time is presented, which is useful in the real-time estimation of surface-charging occurrence possibility. The correlation coefficients (c.c.) for Kp and AE indices with the average charging level are compared. It is found that Kp serves as the best index owning to its largest c.c. and its simplicity. Since Kp can be forecasted through existing models, our results suggest that it can be used to predict the likelihood and level of spacecraft surface charging in the auroral region.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6022
Appears in Collections:空间环境部_期刊论文

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