ABSTRACT
This chapter considers multipath exploitation for stationary and moving targets in an indoor environment based on compressive sensing and describes account multiple internal reflections within the front wall that have an adverse effect on the imaging results. It also considers multipath propagation due to some signal reaching the receiver via an indirect path, that is, an additional specular reflection either at an interior wall or at one of the front wall surfaces. Multipath can be broadly categorized into two types: target multipath and wall reverberations. The chapter introduces the wideband received signal model for through-the-wall radar imaging and explains various multipath contributions in the received signal. It shows how to recover the scene considering stationary and moving targets. The chapter discusses the spatial diversity can be utilized in order to gain more information of the target. It also explains comprehensive bistatic received signal model under multipath propagation.
