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:
Jun. 11, 1996
Filed:
Nov. 28, 1994
Thomas M King, Tempe, AZ (US);
Stephen J Sheard, Tempe, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A master control station (10) includes a common antenna (12) which drives two, unsynchronized multi-channel GPS receivers (16, 18). The two receivers (16, 18) couple to a controller (24). The controller (24) commands the receivers (16, 18) to identify all GPS satellites in view, and then assigns (48) satellites to various channels in the receivers (16, 18). The assignment includes at least one common satellite between the two receivers. Location data are obtained from the two receivers for the common satellite and used to normalize (66) all pseudorange data from all channels to compensate for the lack of synchronization between the two receivers (16, 18). Differential GPS location resolution (84) may then occur using the normalized data.