LOCATION OF WIDEBAND OFDM TRANSMITTERS WITH LIMITED RECEIVERBANDWIDTH

摘要

A system for locating wireless transmitters employing an Orthogonal Frequ ency Division Multiplexing (OFDM) digital modulation scheme. The OFDM scheme comprises transmitting signal components over narrowband frequency channels spanning a wideband channel. The system includes a first receiving system c onfigured to receive a fraction of the signal components transmitted by a fi rst wireless transmitter to be located in a fraction of the narrowband frequ ency channels, and to process the fraction of the signal components to deriv e location related measurements. The system further includes at least a seco nd receiving system configured to receive the fraction of the signal compone nts transmitted by the first wireless transmitter, and to process this fract ion of the signal components to derive location related measurements. The sy stem also includes a processing system configured to use location related me asurements from the first and second receiving systems to compute the locati on of the wireless transmitter.