Compressive Sensing–Based High-Resolution Imaging and Tracking of Targets and Human Vital Sign Detection behind Walls

Abstract

The high-resolution and noninvasive imaging of stationary and moving human and its vital signatures through clutter, such as visually opaque obstacles has sparked a growing interest in through-the-wall radar imaging (TWRI) and ground-penetrating radar (GPR) in both military and civilian applications, such as homeland security, urban counterterrorism, search and rescue missions, and monitoring of the sick and elderly. This chapter outlines some of recent works in application of compressive sensing (CS) in synthetic aperture radar (SAR) and multiple-input multiple-output (MIMO) radar imaging and tracking of multiple targets simultaneously behind multilayer or multiple walls. It also discusses the use of CS in detection of human vital signatures in such a cluttered environment. The chapter concludes with a discussion on the design of a low complexity receiver system with reduced analog to digital converter requirements suitable for SAR, MIMO, ultra-wideband, or stepped frequency.