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直升机电磁(HEM)模拟的三维频率域电磁(EM)模拟编码已经实现。当存在空气情况下,利用电场矢量亥姆霍兹方程可避免与一阶麦克斯方程有关的收敛问题。根据散射电场把问题公式化可引入附加的稳定性。根据这一公式,外加偶极予源可用等效源替代,航空地形的等效源具有平滑器空间相关性,比较容易适用于模型。为了计算等效源,在电导率与背景值不同之处就必须计算出整个空间或层状半空间偶极子源的一次场。我们用交错网格上的有
Helicopter Electromagnetic (HEM) simulation of three-dimensional frequency domain electromagnetic (EM) simulation coding has been achieved. In the presence of air, using the electric field vector Helmholtz equation avoids the convergence problems associated with the first-order Max equations. Formulating the problem based on the scattered electric field can introduce additional stability. According to this formula, the source of dipole can be replaced by equivalent source, and the equivalent source of aerial topography has the spatial correlation of smoother, which is easier to apply to the model. In order to calculate the equivalent source, the primary field of the entire spatial or layered half-space dipole source must be calculated where the conductivity differs from the background value. We use the staggered grid there