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分析了地球磁场的成因及各个组成部分,介绍了世界地磁模型WMM2005,给出了模型的具体公式。最后对地磁场模型在导航中的应用做了简要介绍。
The causes and components of the Earth’s magnetic field are analyzed. The world geomagnetic model WMM2005 is introduced, and the specific formula of the model is given. Finally, the application of geomagnetic model in navigation is briefly introduced.