of forward modeling scheme supported by DIPRO:
2.5-D FDM modeling with topography correction through 2.5-D FEM modeling.
2.5-D FEM modeling incorporating topography, lake, river and etc.
multiplier (1'st and 2'nd order smoothness constraint) or variable
Lagrangian multiplier (ACB, Active Constraint Balancing Method) based
on the automatic parameter resolution analysis for model regularization
results can be saved as ASCII file for further process