Accurate modeling of real-world materials including reinforced concrete, low-emissivity glass, asphalt, and vegetation at sub-THz frequencies.
ISACSim incorporates frequency-dependent dielectric constant and loss tangent curves compliant with ITU-R P.2040 for dozens of architectural and biological building materials from 1 GHz to 1 THz.
Surfaces with roughness comparable to wavelength (such as brickwork or asphalt at 140 GHz) scatter energy diffusely. ISACSim couples Beckmann-Kirchhoff and Lambertian models to accurately reproduce environmental clutter.