System and method for beyond perimeter detection and early warning

摘要: A system for beyond perimeter detection and early warning may comprise multiple sensors positioned in a first field, number of reflectors second field outside defined by the one or more transceivers. Each transceiver transmitter to transmit radio frequency (RF) signals, receiver receive signals from some set reflected some/all response transmitted RF signals. The also include monitor module detect perturbed signal resulting received sensor an alarm generate based on indicate that intruder has crossed field.