Calibrating sub-THz electromagnetic propagation models across concrete, glass, and asphalt urban environments.
Simulating millions of electromagnetic rays in 3D models of Manhattan and Tokyo reveals that diffuse surface scattering accounts for up to 30% of received radar echo power.
Extensive 140 GHz channel sounding trials validate path loss exponents and foliage attenuation rates, guiding optimal base station tower placement.
Optimizing antenna tilt angles and power levels across 120 city cell sites achieved 99.8% 3D spatial radar coverage with zero coverage holes.