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:
Feb. 25, 2014
Filed:
Nov. 17, 2011
Liwen L. Dai, Chino Hills, CA (US);
Ronald R. Hatch, Wilmington, CA (US);
Yujie Zhang, Lomita, CA (US);
Min Wang, Irvine, CA (US);
Liwen L. Dai, Chino Hills, CA (US);
Ronald R. Hatch, Wilmington, CA (US);
Yujie Zhang, Lomita, CA (US);
Min Wang, Irvine, CA (US);
Navcom Technology, Inc., Torrance, CA (US);
Abstract
A system and method for providing improved correction information to navigation receivers includes receiving, from a plurality of reference stations at known locations, a plurality of satellite navigation measurements of signals from a plurality of global navigation satellites. A state of the plurality of global navigation satellites is computed based on the received satellite navigation measurements. Baselines, each corresponding to a pair of the reference stations, are identified. For each identified baseline, computing floating and integer values for a double-differenced integer ambiguity. Double-differenced integer ambiguities that satisfy a set of predefined conditions are identified, and the computed state of the plurality of global navigation satellites is adjusted in accordance with an integer value constraint applied to each double-differenced integer ambiguity that satisfies the set of predefined conditions. The correction information is computed from the adjusted computed state of the plurality of global navigation satellites.