Multilayer Brightness Temperature Tracing Method for Rough Surface Scene Simulation in Passive Millimeter-Wave Imaging

Figure 13

Virtual scene of rough surfaces of different roughness, in which the working frequency is assumed to be 94 GHz and the relative complex permittivity of the four surfaces is assumed to be (81.0, 1.0), (1.353, 0.070), (6.0, 0.1), and (2.1, 0.9), consequently, and the relative complex permittivity of the four rectangular bodies is assumed to be (3.50, 1.20) which is like the cement material. In the scene, the average brightness temperature of sky background, rectangles, and planes is assumed to be 50 K, 300 K, and 200 K, respectively.