Radiation exposure to satellites in medium earth orbit

中地球轨道卫星的辐射暴露

• 批准号: 1940244
• 金额: --
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1940244
• 关键词: Radiation; exposure; satellites; medium; earth

Research shows that the proton radiation belt varies with time, but at different rates depending on altitude. There are several sources and losses which depend on geomagnetic activity. The student will develop a dynamic radiation belt model that can take these variations into account. The model will be verified by comparing the results against data from the VAP satellites for selected events of interest. Using the SPENVIS system, the student will calculate the solar array degradation from the new model and compare against that obtained using the AP8 and AP9 models.

研究表明，质子辐射带随时间变化，但随海拔高度的不同而不同。有几个来源和损失取决于地磁活动。学生将开发一个能够考虑这些变化的动态辐射带模型。该模型将通过将结果与VAP卫星对选定感兴趣事件的数据进行比较来验证。使用SPENVIS系统，学生将根据新模型计算太阳能电池板退化，并与使用AP8和AP9模型得到的结果进行比较。

项目成果

Solar Cell Degradation Due to Proton Belt Enhancements During Electric Orbit Raising to GEO

• DOI: 10.1029/2019sw002213
• 发表时间: 2019-07
• 期刊: Space Weather
• 作者: Alexander R. Lozinski;R. Horne;S. Glauert;Giulio Del Zanna;D. Heynderickx;H. Evans

Optimization of Radial Diffusion Coefficients for the Proton Radiation Belt During the CRRES Era

CRRES时代质子辐射带径向扩散系数的优化

• DOI: 10.1029/2020ja028486
• 发表时间: 2021
• 期刊: Space Physics
• 作者: Lozinski A