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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
(a) Heading calculation of the GLRT+Kalman and DT+Kalman algorithms for indoor pedestrian inertial navigation. (b) The error of the heading angle for these two algorithms.