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Data analysis of the polar plasma environment for spacecraft charging analysis

机译:用于航天器充电分析的极性等离子体环境的数据分析

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Polar Earth orbit (PEO) is a peculiar orbit where energetic auroral electrons and low- temperature ionospheric plasma coexist. There is a risk of charging and subsequent arcing in PEO. The plasma environment, namely its density and energy, is the crucial parameter for spacecraft charging analysis. We statistically analyzed the environmental condition in PEO using the data of auroral electrons and thermal ions measured by DMSP (Defense Meteorological Satellite Program) satellites. The probability of a given combination of current densities of auroral electrons and thermal ions has been derived. The energy spectrum of the auroral electrons is also classified into several types, and its correlation with the thermal ions is analyzed. Combinations of the plasma parameters used by a spacecraft charging simulation software have been identified and a database containing the probability of occurrence of each combination has been formulated.
机译:极地轨道(PEO)是一个奇特的轨道,高能的极光电子和低温电离层等离子体共存。 PEO中存在充电和随后产生电弧的风险。等离子体环境,即其密度和能量,是航天器充电分析的关键参数。我们使用DMSP(国防气象卫星计划)卫星测得的极光电子和热离子的数据,对PEO中的环境条件进行了统计分析。已经得出了极光电子和热离子的电流密度给定组合的概率。极光电子的能谱也分为几种类型,并分析了其与热离子的相关性。已经确定了航天器充电模拟软件所使用的血浆参数的组合,并已建立了包含每种组合出现概率的数据库。

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