RADIO LOCATION SYSTEM INCLUDING TRANSCEIVER TAGS

摘要

An asset management radio location system uses time-of-arrival differentiation for random and repetitive spread spectrum, short d uration pulse "blinks" from object-attached tags, to provide a practical, continuous identification of the location of each and every object within an environment of interest, irrespective whether the object is stationary or moving. Correlation-based RF processors (24) determine which signals received by tag transmission readers (10) are first-to-arrive signals as transmitted from any blinking tag, and an object location processor carries out time-of-arrival differentiation of these first-to-arrive transmissions from any blinking tag to determine where the respective object is located within the environment. A low power interrogation wand may be employed to refine the location of an object by a user programmed transmission - response exchange between the wand and the tag associated with the object of interest.