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. 14, 2011
Filed:
Dec. 09, 2008
Liwen L. Dai, Chino Hills, CA (US);
Chaochao Wang, Los Angeles, CA (US);
Daniel J. Eslinger, Huntington Beach, CA (US);
John Perry Genta, Redondo Beach, CA (US);
Liwen L. Dai, Chino Hills, CA (US);
Chaochao Wang, Los Angeles, CA (US);
Daniel J. Eslinger, Huntington Beach, CA (US);
John Perry Genta, Redondo Beach, CA (US);
Navcom Technology, Inc., Torrance, CA (US);
Abstract
In a method of mitigating errors in satellite navigation measurements at a satellite navigation receiver, respective single-frequency signals are received from respective satellites in a plurality of satellites in a satellite navigation system. Pseudorange and carrier-phase measurements corresponding to respective received single-frequency signals are calculated. These calculations include filtering the pseudorange and carrier-phase measurements in a Kalman filter having a state vector comprising a plurality of states, including a position state, a receiver clock state, and a plurality of bias states. Each bias state corresponds to a respective satellite in the plurality of satellites. The filtering includes updating the state vector. An estimated position of the satellite navigation receiver is updated in accordance with an update to the state vector.