Multi-Layered Structure for Radar Applications

This paper proposes a method to predict the backscattering of multilayer rectangular and circular slabs with arbitrary thickness, dielectric constant, and conductivity over all frequency ranges. The radar cross section is defined as a function of the internal field generated on each individual layer. The internal electric field is derived analytically through boundary conditions at each layer, representing the amplitude, phase, and polarization of the dispersed wave in the distant field. The multi-layer estimation of radar cross section is validated using results from a single-layer slab and experimental data from diverse literature. The model can additionally be employed to simulate the radar cross section of various landscapes and natural environments, where distinct re-gions such as vegetation, desert, or clouds are characterized by differing permittivity and thickness to derive the radar cross section. This study aims to introduce a novel adaptive adaptation for human detection by assessing the thickness of pierced walls. To ascertain the penetrated wall thicknesses, the frequency response of the wall must first be established. The calculation of frequency response employs two models: a single antenna model and a dual antenna model. The frequency response equations for each model are employed to examine the calculated received signal, establishing a correlation between reflections and wall thickness. The backscattering signals are simulated for a single antenna model, including signals arriving from various angles. For the twin an-tenna model, received signals are simulated for scenarios involving transmission via multilayer structures, walls, and individuals.