基于最优化卫星轨道参数确立地球主磁场模型

Establishing the Earth’s Main Magnetic Field Model Based on Optimized Satellite Orbital Parameters

摘要: 地球主磁场在资源勘探、导航定位与灾害预测等众多领域具有重要应用价值，而卫星磁测数据是构建地球主磁场模型的主要数据来源。卫星轨道参数(包括半长轴、偏心率和倾角等)的不同，会导致获取的卫星磁测数据集存在差异，进而影响地球主磁场模型的构建效果。本文深入探讨了不同卫星轨道参数对地球主磁场模型构建的影响机制，并从中筛选出能够构建高精度地球主磁场模型的最优卫星轨道参数。研究结果可为后续地球主磁场模型的构建及相关研究提供理论依据与实践指导。

Abstract: The Earth’s main magnetic field has significant application value in many fields, such as resource exploration, navigation and positioning, and disaster prediction. Satellite magnetic measurement data are the main data sources for constructing the Earth’s main magnetic field model. Different satellite orbital parameters (including semi-major axis, eccentricity, and inclination, etc.) will lead to differences in the obtained satellite magnetic measurement datasets, which in turn affect the construction of the Earth’s main magnetic field model. This paper deeply explores the influence mechanism of different satellite orbital parameters on the construction of the Earth’s main magnetic field model and selects the optimal satellite orbital parameters for constructing high-precision Earth’s main magnetic field models. The research results can provide theoretical basis and practical guidance for the subsequent construction of the Earth’s main magnetic field model and related research.