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

Figure 23

Retrieval of H₂O fraction in the 2nd layer (3-variable case). Parameters: 𝜃_𝑖=40deg, amplitude = 3cm, 𝑙=20cm, and 𝜖_𝑟1=5.5+.3𝑖. Observation frequencies: 1000 MHz, 1100 MHz, and 1200 MHz.