An Experimental Study for a High-resolution 3-D Imaging Algorithm with Linear Array for UWB Radars

Pulse radars with UWB signals are promising as a high-resolution imaging technique that can be used for a non-destructive measurement of surface details on reflector antennas and airplane signal. We previously proposed a fast 3-D imaging algorithm, SEABED, that utilizes a reversible transform between the time delay and the target boundary. However, data acquisition is time-consuming when obtaining a high-resolution image because it assumes a mono-static radar with 2-D scanning of an antenna. In this paper, we utilize linear array antennas and propose a fast and high-resolution imaging algorithm. We extend the reversible transform for mono-static radars to apply to bi-static radars to reduce the data acquisition time. The effectiveness of the proposed method is verified with numerical simulations and experiments.