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:
Oct. 26, 2010
Filed:
Nov. 20, 2007
Gang Xie, Fullerton, CA (US);
Mangesh Chansarkar, Irvine, CA (US);
Daniel Liao, Irvine, CA (US);
Xiangdong Lin, Irvine, CA (US);
Gang Xie, Fullerton, CA (US);
Mangesh Chansarkar, Irvine, CA (US);
Daniel Liao, Irvine, CA (US);
Xiangdong Lin, Irvine, CA (US);
SiRF Technology, Inc., San Jose, CA (US);
Abstract
Systems and methods for detecting global positioning system (GPS) measurement errors are provided. In this regard, a representative system, among others, includes a navigation device that is configured to receive GPS signals from signal sources, the navigation device being configured to calculate pseudoranges (PRs) and delta ranges (DRs) based on the received GPS signals, the navigation device including a consistency check algorithm that is configured to: determine mismatches between the respective calculated PRs and DRs, and indicate that an error exists in the respective calculated PRs and DRs based on their mismatch and mismatch accumulations. This algorithm can be independent of navigation state and is capable of detecting slow-changing errors.