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Radiation Analysis of HR Electro-Optical Satellite

机译:HR电光卫星辐射分析

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Radiation is a critical factor for spacecrafts. In some parts of the Earth's orbit, like South Atlantic region, radiation dose can reach high levels and cause damage on electronic systems of satellites. Space radiation environment contains protons and heavy ions which are produced by energetic solar events, galactic cosmic rays and trapped particles. When the satellites are exposed to this environment, some deteriorations and effects are observed in the subsystems. The radiation effects are classified as- Cumulative effects, which are Total Ionizing Dose (TID)and Displacement Damage (DD), and Single Event Effects (SEEs). TID and DD show gradual changes, while SEEs cause transient or permanent effect on electrical circuits. A better understanding of the interaction of the satellite with the space environment, utilizing simulation tools is essential to gain overview of satellite resistance. This paper puts forth radiation analysis of High-Resolution (HR)electro-optical satellite in the Low Earth Orbit (LEO). The radiation environment is specified using OMERE [1] and its effects on subsystems are simulated with FASTRAD [2]. Also, it includes characteristics of the space environment and their effects on satellites.
机译:辐射是航天器的关键因素。在地球轨道的某些部分,例如南大西洋地区,辐射剂量可能达到很高的水平,并会损坏卫星的电子系统。空间辐射环境包含质子和重离子,这些质子和重离子是由高能太阳事件,银河系宇宙射线和被困粒子产生的。当卫星暴露在这种环境中时,在子系统中会观察到一些恶化和影响。辐射效应被分类为-累积效应,即总电离剂量(TID)和位移损害(DD),以及单事件效应(SEE)。 TID和DD显示逐渐变化,而SEE对电路产生瞬态或永久性影响。利用仿真工具更好地了解卫星与空间环境之间的相互作用对于获得卫星阻力的概况至关重要。提出了近地轨道高分辨(HR)电光卫星的辐射分析。使用OMERE [1]指定辐射环境,并使用FASTRAD [2]模拟其对子系统的影响。此外,它还包括空间环境的特征及其对卫星的影响。

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