宇宙射线
宇宙射线对健康的威胁
艾伦皮带车辐射
物理
空间环境
航天器
太阳耀斑
磁层
近地轨道
空间辐射
大气(单位)
辐射
电离辐射
太空天气
天文
地心轨道
天体生物学
轨道(动力学)
太阳高能粒子
地球轨道
卫星
航空航天工程
日冕物质抛射
辐照
气象学
太阳风
光学
核物理学
工程类
等离子体
作者
Norsuzila Ya’acob,Akmarulnizam Zainudin,R. Magdugal,Nani Fadzlina Naim
标识
DOI:10.1109/iccsce.2016.7893545
摘要
Spacecrafts experience numerous problems from encountering space environment such as radiation belts, solar flares and cosmic rays which are at the origin of space radioactive environment. In this paper, these radiations are investigated and analysed for the Low Earth Orbit (LEO) using Space Environment Information System (SPENVIS) and the results are then used to mitigate their effects on satellites. The radiations from Galactic Cosmic Rays (GCR's) and solar flares are composed of highly energetic particles originated from space and they are capable of damaging electronic systems severely. The charged particles from GCR and solar flares are trapped in the Earth's magnetosphere and form belts called Van Allen Belts. These radiations cause harmful effects such as Total Ionizing Doses (TID) and Single Event Upsets (SEU) to space craft components. TID is caused by the presence of electrons and SEU is created by the presence of protons in the atmosphere. TID affects almost every equipment of the satellites while SEU causes soft errors. These effects are really harmful and can even shorten the life span of satellites. Three satellites orbiting in LEO with different altitudes and inclinations are used to study the radiation effects.
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