Frequency modulated interrupted continuous wave signals in different radar imaging applications

Undesired reflections at the interface between air and other materials can compromise the detection of targets and saturate and block the receiver in a variety of radar systems for applications such as through-wall imaging, ground penetration radar, and medical imaging. In this paper we propose a technique based on frequency modulated interrupted continuous wave (FMICW) signals as a novel approach to mitigate/remove the undesired reflections. The proposed technique has been successfully validated through different in-field experiments performed with a radar system built for the purpose.