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Gerard K O Neill: Satellite-based vehicle position determining system. Robbins & Laramie, November 16, 1982: US04359733 (171 worldwide citation)

A system for determining the positions of a plurality of vehicles traveling on or above a defined sector of the earth's surface comprises a transponder carried by each vehicle for transmitting a uniquely coded beacon signal in response to a general interrogation signal, at least three repeater-carry ...


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O Neill Gerard K: Systeme porte par satellite pour determiner la position dun vehicule, Satellite-based vehicle position determining system. O Neill Gerard K, SIM & MCBURNEY, November 1, 1983: CA1156339

TITLE OF THE INVENTION SATELLITE-BASED VEHICLE POSITION DETERMINING SYSTEM ABSTRACT OF THE DISCLOSURE A system for determining the positions of a plurality ofvehicles traveling on or above a defined sector of the earth'ssurface comprises a transponder carried by each vehicle fortransmitting a unique ...


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O Neill Gerard K: Satellite-based vehicle position determining system. O Neill Gerard K, April 1, 1982: WO/1982/001076

A system for determining the positions of a plurality of vehicles (A) traveling on or above a defined sector of the earth's surface comprises a transponder (Fig. 6) carried by each vehicle for transmitting a uniquely coded beacon signal (Fig. 5) in response to a general interrogation signal, at leas ...