Impulse SAR and Its Application for Through-the-Wall Detection and Identification of People and Weapons

Eureka Aerospace is developing and testing a prototype 3D stereo metric impulse synthetic aperture radar supplemented by moving target indicator capabilities for remote through-the-wall reliable detection and identification of stationary and moving human and nonhuman targets, including weapons and explosives. The power source consists of a solid-state pulser, which generates double-exponential-type waveforms. The pulsers used in transient radar systems usually generate fast rise-time voltage profiles followed by relatively slow waveform decays. The University of Michigan uses the synthetic aperture array technique by employing ultra-wideband antennas and a wide range of incidence angles to study the propagation through brick and poured concrete walls in response to point sources near the walls. The ability to decouple early- and late-time responses results in a better understanding of the broadband echoes, which, in turn, yields more efficient signal processing algorithms capable of generating superior quality images.