A time-domain beamformer for UWB through-wall imaging

A time-domain beamformer using ultra-wideband short-pulse (UWB SP) signal for through-wall imaging (TWI) applications is proposed in this paper. The impact of the wall on the performance of through-wall radar imaging, such as wave refraction and velocity change, is considered in the design of the beamformer. Proof verifying the proposed beamformer is provided using the finite-difference time-domain (FDTD)-simulated high fidelity through-wall radar data. Simulation results demonstrate that hidden targets behind the wall can be located accurately in both range and angle by using the presented time-domain beamformer.