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. 07, 2012
Filed:
Jun. 30, 2009
James Wang, San Jose, CA (US);
Xiaoguang Yu, Wuhan, CN;
Zhongbao Feng, Sichuan, CN;
Yiliang Liu, Sichuan, CN;
Shenghong LU, Sichuan, CN;
James Wang, San Jose, CA (US);
Xiaoguang Yu, Wuhan, CN;
Zhongbao Feng, Sichuan, CN;
Yiliang Liu, Sichuan, CN;
Shenghong Lu, Sichuan, CN;
O2Micro, International, Georgetown, KY;
Abstract
A global positioning system and dead reckoning (GPS&DR) integrated navigation system includes a GPS receiver coupled to a moving object for periodically generating GPS navigation information of said moving object, a DR system coupled to said moving object for periodically calculating DR navigation information of said moving object, and a filter coupled to said GPS receiver and said DR system for periodically calculating navigation information of said moving object, wherein said filter gets observation information by integrating said GPS navigation information and said DR navigation information according to a weight value of said GPS navigation information and a weight value of said DR navigation information, and calculates a current navigation information by integrating said observation information with previous navigation information from a plurality of previous cycles.