The very important part for wave tomography is to get coefficent matrix of tomography equations, that is the Jacobin matrix, or deviation derivative matrix of wave field to physical parameters.

• 波动成像最关键的一步就是求取成像方程的系数矩阵，也就是雅可比系数矩阵，也即波场对物性参数的偏导数矩阵。