AHMET S. TURK , PhD, has been working on land mine detection systems as a ground-penetrating impulse radar RF system and antenna designer since 1998. Dr. Turk has over thirty technical publications in the areas of high frequency and microwave radars, RF communication devices, and ultra-wide band antennas. A. KOKSAL HOCAOGLU , PhD, has worked on image and signal analysis projects such as vehicle detection and recognition, detection of tripwires, acoustic signature analysis, and multi-sensor fusion for target recognition and tracking. He has been active in land mine detection algorithm research since 1998. Dr. Hocaoglu has over thirty technical publications in the areas of image and signal processing and pattern recognition. ALEXEY A. VERTIY , DSc., PhD, has been working on quasi-optical imaging, generating sub-THz Smith-Purcell radiation, super low-temperature millimeter wave spectroscopy for nuclear polarized targets, and subsurface microwave and sub-THz tomography systems for security, remote sensing, non-destructive testing, and medical applications. Dr. Vertiy has over one hundred sixty scientific publications in the areas of microwave and millimeter wave technologies, including coauthorship of two books.