The GEM-3M is a handheld landmine/ordnance/IED detector/imager, that combines an EMI conductivity sensor, like metal detector (MD), and a ground-penetrating radar (GPR) along with a revolutionary built-in navigator that enables the operator to visualize ground image on a HUD or PDA screen while sweeping for buried objects like IEDs. This is done by painting the screen in real time using a new local navigation method.