Keynote 1: Radar and Magnetic Field Imaging of Hidden Objects

Human eyes cannot see objects behind an opaque wall or buried underground. Therefore, an imaging device capable of seeing such a hidden object will be interesting, challenging, and useful. In this talk, I will discuss two subsurface/through-wall imaging modalities, i.e., radar and magnetic-field imaging. In the radar, short-range imaging implies the usage of ultra-wide bandwidth spectrum to achieve high-range resolution. The specifications, design, and implementation of a Ground Penetrating/Through-Wall Radar related to this issue will be presented. A magnetic field imaging system employs magnetometers to obtain a distribution of the induced magnetic field. Two examples of such systems will be presented. The first one employs a built-in magnetometer of a mobile phone (devices), and the second is an imaging system that employs an array of magnetometers. Whereas a single built-in sensor works as a magnetic field scanner, the imaging system that employs a sensor array works in real-time like a camera.