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. 18, 2020
Filed:
Oct. 16, 2017
U-blox Ag, Thalwil, CH;
Christopher David Hide, Reigate, GB;
Alexander James Parkins, Reigate, GB;
u-blox AG, Thalwil, CH;
Abstract
Methods and apparatus for determining navigation data () using carrier range measurements obtained by a GNSS receiver for a plurality of GNSS satellites, the apparatus comprising: a first Kalman filter () configured to determine an a posteriori estimate of a first state vector based at least in part on a first set of GNSS measurements () obtained by the, and/or a further, GNSS receiver and an a priori estimate of the first state vector, the first state vector comprising carrier range ambiguity values relating to the plurality of GNSS satellites and a position of the, and/or the further, GNSS receiver; and a second Kalman filter () configured to determine an a posteriori estimate of a second state vector, which comprises the navigation data (), based at least in part on a second set of GNSS measurements () obtained by the, and/or a further, GNSS receiver, an a priori estimate of the second state vector, and carrier range ambiguity data () based on the carrier range ambiguity values determined in the a posteriori estimate of the first state vector.
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