Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface. This nondestructive method uses electromagnetic radiation in the microwave band of the radio spectrum to detect reflected signals from subsurface structures. This book concisely summarizes many of the lessons learned over the past few decades working on the problem of algorithm development for landmine and IED detection in GPR data and represents an in-depth analysis of different stages of signal processing applied to GPR data.