The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1983
Filed:
Oct. 28, 1980
Paul K Dano, Euless, US;
Eric C Ko, Carrollton, US;
Del Norte Technology, Inc., Euless, TX (US);
Abstract
A radar system is used to locate a vehicle's position on a predetermined X, Y grid, which could be latitude and longitude. Several paths of different lengths link the vehicle with a master station which transmits cyclically recurring pulses. Equipment on the vehicle compares the propagation time required for the pulses to travel over each of the several paths. The compared times are then used by a microprocessor to calculate the position of the vehicle. The several paths are identified by a use of repeater stations which may selectively drop predetermined ones of the cyclically recurring pulses and retransmit the rest. For example, one repeater may retransmit every second recurring pulse and another repeater may retransmit every third recurring pulse.