Method for performing heading estimation on pedestrian in multiple carrying modes using mobile terminal

Abstract

The invention provides a method for performing heading estimation on a pedestrian in multiple carrying modes using a mobile terminal. The method comprises the following steps: 1, obtaining the acceleration in a preset coordinate system, the angular velocity at a corresponding time point and the Earth's magnetic field intensity by the mobile terminal; 2, obtaining the attitude angle of the mobile terminal relative to a geodetic coordinate system according to the acceleration, the angular velocity at the corresponding time point and the Earth's magnetic field intensity; and 3, obtaining the gaitfrequency and the gait event sequence of the pedestrian according to the acceleration. The method for performing heading estimation on the pedestrian in multiple carrying modes using the mobile terminal can detect the heading of the pedestrian in multiple carrying modes by calculating human body motion information acquired by the mobile terminal. Compared with the prior art, the method provided by the invention can still achieve the heading estimation of the pedestrian when the pedestrian arbitrarily transforms the carrying mode of the mobile terminal.

Description

technical field [0001] The present invention relates to a method for estimating the course of pedestrians, in particular to a method for estimating the course of pedestrians using a mobile terminal in various carrying modes. Background technique [0002] With the development of positioning technology, people's demand for Location Based Services (LBS, Location Based Services) is increasing day by day. In the outdoor environment, the wide application of Global Navigation Satellite System (GNSS, Global Navigation Satellite System) meets people's outdoor navigation and positioning needs. However, in an indoor environment or an environment covered by buildings, attenuation and multipath effects will occur due to the satellite signal being blocked, which will cause the accuracy of satellite positioning to deteriorate, or even become unusable. Therefore, to achieve accurate indoor positioning and navigation requires the help of other positioning technologies. The continuous impro...

AI Technical Summary

Problems solved by technology

Once the pedestrian changes the position or way of carrying the mobile terminal during the positioning process, the positioning will produce a great deviation or even fail to locate. Specifically, if the pedestrian is holding the mobile terminal vertically or horizontally, or the mobile terminal and pedestrian If the heading forms a certain angle, it will affect the positioning of the pedestrian by the heading estimation of the existing technology, resulting in a deviation of the pedestrian positioning

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