【摘要】 拟解析近似方法是一种求解积分方程的一种近似方法,它可以处理强散射或者大扰动的电磁散射问题,在计算过程中避免了传统微分数值方法解决问题时所遇到的大型矩阵或大型代数方程组的求解。孙建国[5]将其引入直流电场的积分方程中,并给出了求解异常电场积分方程的标量拟解析近似公式。在以前的研究中,已经验证了均匀场中异常球体的拟解析近似解的精度,这里对均匀场中的立方体异常体进行数值模拟,得到了直流电场中异常立方体模型的标量拟解析近似解。由于复杂地电模型可以用立方体的组合进行模拟,因此对立方体异常电场拟解析近似解的研究,为三维直流电场中复杂地电模型的快速正反演模拟打下了基础。更多还原

【Abstract】 The Quasi-analytical method is an approximation method for solving the integral equations which can deal with problems of strong scattering or large disturbing. In the process of calculation, it avoids the solving of the large matrix and the team algebraic equations, which was always encountered in the traditional differential coefficient methods. Sun J introduce this method into solving of the D.C. electric field integral equations, and he put forward the academic formulas.In the previous research, we had validated the precision of this method. In this paper we calculated the anomalous cube in the symmetrical field, got the Quasi-analytical solution of cube model. Due to the complex model decomposing into some cubes, the study of the cube model can pave way for the quasi-analytical method used in fast forward and inverse modeling of the complex model in the 3D D.C. electric field.更多还原