近地空间磁场梯度分布特性及磁力效应研究

基金项目:

国家自然科学基金“低轨航天器磁推进机理研究”（项目编号：11002143）

The characteristics of geomagnetic field’s gradient distribution and the magnetic force effects in near-earth space

摘要: 以国际地磁参考场模型IGRF11为基础，推导出地球磁场梯度分布公式，并对近地空间磁场分布特点进行了分析。由基本磁力学可知，带强磁体的航天器在地磁环境中不仅受到磁力矩作用，还将受到与地磁梯度相关的磁力的影响。根据地磁环境下的磁体受力机理，文章讨论了以弱磁力改变轨道倾角的方法，并通过数值仿真验证了其有效性。
- IGRF11模型；地磁场；梯度分布；弱磁力
Abstract: Based on the 11th international geomagnetic reference field (IGRF11) model, the gradient distribution characteristics of the geomagnetic field in the near-Earth space are analyzed. From magnetics, it is known that the spacecraft with a strong magnet moment is not only affected by the magnetic moment, but also by a magnetic force related to the geomagnetic gradient. This paper discusses how to change the orbital inclination angle by the weak magnetic force, based on the force analysis for a magnet interaction with the geomagnetic field in the IGRF11 model. Numerical simulations are carried out to test the effectiveness of this idea.
- IGRF11 model