Today U.S. soldiers are being killed because the Defense Department cannot deploy all the sensors it would like to. DoD could  deploy sensors every few yards to detect  buried  improvised explosive device (IED). As it is, every sensor deployed today has to be battery powered, so even if vast sensor nets …

Many types of sensors have been proposed for detection of small targets such as tanks and trucks including passive infrared imaging sensors and active Radars. Passive sensing systems, for many types of targets, especially airborne ones, use target motion as a cue for the target detection. However, for stationary small …