運用AP-8及AE-8輻射帶模型計算各種衛星軌道之累積粒子通量

Integrated Particle Flux at Various Satellite Orbits Based on AP-8/AE-8 Radiation Belt Model

丁健恩(Jianen Ding)

指導教授 ： 汪愷悌

淡江大學/工學院/航空太空工程學系碩士班/碩士(2019年)

https://doi.org/10.6846/TKU.2019.00181

摘要

范艾倫輻射帶是一個位於地球附近富含大量高能電子與質子的區域。普遍而言，此輻射帶是由內輻射帶及外輻射帶二個高密度的帶狀區域，以及於二者間電子和質子通量相對較少的槽區域所組成。這些區域中的高能量粒子可能對人造衛星造成嚴重破壞，所以了解這些粒子的空間分布及其於衛星軌道上的累積通量極其重要。在本研究中，我們選用AE-8及AP-8輻射帶模型與國際地磁參考場模型IGRF-12，來計算不同軌道元素參數之衛星繞行地球ㄧ圈所接收之質子與電子的累積通量。計算結果顯示，於不同季節時，質子與電子之積分通量差異較不顯著；而電子之積分通量於太陽極大期和太陽極小期的差異則較為明顯。本研究整理各不同軌道之質子及電子之累積通量並製表，藉此輔助軌道行經地球輻射帶的衛星任務設計。

關鍵字

范艾倫輻射帶 ； AE-8/AP-8輻射帶模型 ； 累積通量 ； 衛星軌道

並列摘要

The Van Allen radiation belt is a near-Earth region in space that contains an abundance of high energy electrons and protons. In general, the Van Allen radiation belt is made up of two belts with dense particle densities including the inner belt and the outer belt, and a slot region with tenuous particle fluxes in between. These high-energy particles can pose serious damage to satellites passing through this region. Hence, it is important to understand the spatial distributions of these particles and model their associated fluence that satellites can be bombarded. In this study, we integrate fluxes of proton and electrons along different satellite orbits rotating to the Earth, based on varied input parameters for orbital elements by adopting the AE-8 and AP-8 Van Allen radiation belt models and the 12th International Geomagnetic Reference Field (IGRF-12) model. The results show that the difference of integrated fluxes for both protons and electrons at different seasons is not obvious; however, it is significant for electrons if comparing the integrated values during periods of solar maximum and solar minimum. The fluence of both protons and electrons for one completed orbit are also made into a table for reference for future design of space mission associated with the radiation belt.

並列關鍵字

Van Allen Radiation Belt ； AE-8/AP-8 Models ； Fluence ； Satellite Orbits

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