ABSTRACT
This chapter discusses the through-wall (TW) operational problem, examines the constraints on TWR design, shows earlier state-of-the-art systems, explains the unique antenna array theory, and summarizes the time delay calibration and signal processing systems. The examples of Xaver™800 TWR high-resolution imaging show the results of the advanced design concepts. Amir Beeri, Ron Daisy, and Jacob Oaknin provided the papers explaining the antenna theory and channel alignment techniques. Chapter 15 explains the signal acquisition system. Chapter 16 presents the time delay calibration system.
