An Overview on Down-Looking UAV-Based GPR Systems

Radar imaging from unmanned aerial vehicles (UAVs) is a dynamic research topic attracting huge interest due to its practical fallouts. In this context, article provides comprehensive review of the current state art and challenges related UAV-based ground-penetrating radar (GPR) systems. First, description available prototypes provided in terms technology, UAV platforms, navigation control devices. Afterward, paper addresses main issues affecting performance GPR such as platform during flight collect high-quality data, necessity provide accurate position information probing wavelength, mitigation clutter other electromagnetic disturbances. A major applicative areas for systems reported with aim show their potential. Furthermore, signal-processing approaches currently adopted are detailed two experimental tests also prove actual capabilities. Finally, open future perspectives regarding promising technology discussed.