A novel technique for multiple targets detection in through-the-wall radar imaging

Abstract

Application of through-the-wall radar imaging (TWRI) in many critical scenarios requires accurate and fast target identification. The spatial distribution of a target in TWRI is a function of many variables thus making it a very complex and dynamic problem. Especially for multiple targets and in clutter rich environments, the operator faces a challenging task separating the target from noise and background clutter. In this work, a combination of a sensitive constant false alarm rate (CFAR) thresholding technique and a binary masking operation is proposed. The experimental results show that the technique provides a good trade-off between high sensitivity and low false detection rate.