1
George A Olive: System and process for locating sources of radiation. Charles F Duffield, September 14, 1976: US03980948 (15 worldwide citation)

A vehicle location system is provided for determining the coordinate location of a vehicle through radio transmission radiation from the vehicle and the system includes a plurality of receiver sites at known coordinate locations each having antenna-coupler means providing first and second signals wh ...


2
Olive George A: System and process for locating sources of radiation. Duffield Charles F, February 4, 1975: US3864681 (12 worldwide citation)

A vehicle location system is provided for determining the coordinate location of a vehicle through radio transmission radiation from the vehicle and the system includes a plurality of receiver sites at known coordinate locations each having antenna-coupler means providing first and second signals wh ...