Mobile emergency perimeter system and method

A method for establishing and controlling a mobile perimeter and for determining a geographic location of an emitting radio frequency (RF) emitter in a vicinity of the mobile perimeter includes at each of a plurality of RF sensors, receiving an RF transmission, processing the received RF transmissio...

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Bibliographische Detailangaben
Hauptverfasser:	McLinden, Ian J, Chartier, Eric, Davis, Paul C, Hagelstrom, Ryan L, Sweet, Douglas
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	A method for establishing and controlling a mobile perimeter and for determining a geographic location of an emitting radio frequency (RF) emitter in a vicinity of the mobile perimeter includes at each of a plurality of RF sensors, receiving an RF transmission, processing the received RF transmission to produce RF signal data, and wirelessly transmitting the RF signal data to a central station. At the central station, a processor: executes a cross-correlation process to: compare characteristics of pairs of RF signal data; based on the compared characteristics, determine a time difference of arrival (TDOA) between RF transmissions received at each RF sensor of a pair of RF sensors, and repeats the cross-correlation process for each pair of RF sensors from which RF signal data are received. Using the TDOA values for two or more pairs of RF sensors, the processor determines a location estimate for the RF emitter.