The concept of sensor networks that can detect intrusions by hostile personnel and provide live, real time video of the intrusions to a central location has been circulated for over three decades. While there have been permanent installations of continuous surveillance monitors along small sections of the US border and such systems are routinely installed around high value facilities, these systems are not practical over large regions. The ideal sensor network would be covert, have self-contained power, be resistant to false alarms, be low cost, enable wireless data transfer, rapidly deployed and easily maintained, and require minimal personnel to operate/monitor. Unfortunately, the technical capability to produce such a sensor network has heretofore not existed. The advent of Ultra-Wideband (UWB) radiofrequency technology, digital cameras and night/day imaging technology developed during the telecom boom has changed this. By combining General Atomics' UWB communications and radar technology with commercially available micro-CCD or CMOS cameras, night illuminators, and lithium-ion batteries, an unattended sensor network capable of monitoring large (10 - 2000 km) class perimeters has been developed.