A Heading Drift Correction Method for Pedestrian Inertial Positioning

Pedestrian inertial positioning is an effective means when satellites fail. Heading accuracy determines the performance of pedestrian positioning. To realize accurate positioning, a heading drift correction method was proposed. An in-situ active rotation performed before autonomous and error compensation coefficient biaxial geomagnetic measurement obtained by using ellipse fitting to achieve suppression external environmental interference. The corrected information used directly calculate combine it with peak stride detection linear step estimation model pedestrians. verify effectiveness stability algorithm, several sets experiments on pedestrians are carried out in outdoor environment. experimental results show that average deviation between starting point endpoint proposed algorithm’s trajectory accounts for 0.95% total travel 150 m experiments.