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

Figure 14

Three independent observations are used in a 2-variable case resulting in significantly improved inversion results. Parameters: 𝜃_𝑖=40deg, amplitude = 3cm, 𝑙=20cm, 𝜖_𝑟1=5.5+.3𝑖, and 𝜎_rms=7cm. Observation channels: 𝑓₁=120MHz, 𝑓₂=180MHz, and 𝑓₃=460MHz.