AUTOMATIC SEQUENTIAL TUNING OF NARROWBAND RECEIVERS OF A WIRELESS LOCATION SYSTEM FOR VOICE/TRAFFIC CHANNEL TRACKING
In a wireless location system, narrowband receivers are used in a mode, known as automatic sequential tuning, in which the receivers are tuned sequentially and in unison to a plurality of predefined RF channels. Signal transmissions in these channels are digitally recorded and used in location processing. A location record or report is generated to identify an estimated location of one or more wireless transmitters. The identity of the located transmitter(s) is determined by matching the location record to data indicating which wireless transmitters were in use at a time corresponding to the location record, and which cell sites and RF channels were used by each wireless transmitter. This method is especially suited for voice or traffic channel tracking of wireless mobile transmitters, such as cellular telephones.