Through-the-wall tomographic imaging using chirp signals

This paper presents a feasibility study of using chirp signal for through-the-wall radar imaging and indoor positioning applications. Chirp signal enables frequency diversity while multistatic geometry of tomographic imaging enables space diversity. Pulse compression of chirp aims for range compression of received signals. Beamforming reconstruction algorithm is then applied on compressed signals to produce the final image. In the computer simulation experiments, we have considered using chirp signal and pulsed sine signal as transmitting signals for point targets imaging with building walls in different situations. This study draws a conclusion that using chirp signals, high-quality imaging and positioning results can be obtained.