Retrieval of Parameters for Three-Layer Media with Nonsmooth Interfaces for Subsurface Remote Sensing

Figure 8

Data subspaces (3 variable case). The total data space is broken up into smaller subspaces. The subspaces typically contain 4 points along each direction providing error-free fits with 3rd order polynomials and non-zero 2nd derivatives. The inversion algorithm is then applied to every individual subspace, and the best solution is then selected.