This invention is a system and method of locating a target using
distributed antenna. The antenna consists of several receiving elements
in known locations. At least one of the receiving elements is also a
transmitter and transmits an interrogation signal to a target. The return
signal from the target is received by a plurality of receiving elements
and the target's position is calculated using the time of arrivals of the
reply signal and the round trip delay between the transmission of the
interrogation signal and the reception of the subsequent reply signal.