中文摘要：

针对舰船磁场测量中存在磁性目标干扰的问题，提出了基于混合等效源的舰船磁场建模方法。该方法将边界元法和磁体模拟法相结合，用边界等效源等效舰船，用磁体等效源等效磁性目标，根据磁性目标干扰下的原始磁场测量数据建立了基于混合等效源的逆问题模型。采用Tikhonov正则化方法反演出混合等效源参数，进而由获得的边界等效源参数计算出舰船磁场。最后，用船模实验对舰船磁场建模方法的可行性和有效性进行了检验。结果表明，所建模型能够由原始磁场测量数据有效计算出舰船磁场。

英文摘要：

As the measurement data of a ship＇s magnetic field is interfered with by a magnetic target, a modeling method for a ship＇s magnetic field based on a mixed equivalent source was proposed. The method combines the boundary element method with the theory of magnet simulation, uses a boundary equivalent source as a ship, and a magnet equivalent source as a magnetic target, and establishes an inverse question model based on a mixed equivalent source according to the original measurement data of the magnetic field that is interfered with by a magnetic target. The parameters of the mixed equivalent source were determined by the Tikhonov regularization method, and then a ship＇s magnetic field was determined based on the parameters of the boundary equivalent source. Finally, a model ship experiment was performed to verify the feasibility and effectiveness. The results show that the model can effectively calculate a ship＇s magnetic field according to the original measurement data of the original magnetic field.