Time domain terahertz impulse ranging studies

Abstract

We present time domain impulse scattering measurements of freely propagating terahertz radiation measured with subpicosecond resolution. This fast time response corresponds to a usable bandwidth of over 1 THz. Measured scattered fields from thin wire targets agree well with the calculated scattering for the early and late time response in both the time and frequency domains. Realistic ranging from scale model aircraft is demonstrated.