Linear and Nonlinear Microwave Tomography Approaches for Subsurface Prospecting: Validation on Real Data

In this letter, the capabilities of two tomographic approaches for subsurface prospecting have been tested against laboratory-controlled data. The first approach is a noniterative method based on the Born approximation, while the second one is a nonlinear iterative approach. Despite some simplifications adopted in modeling the scenario, both approaches have provided satisfying results.