Method for acquiring advancing directions of pedestrians by aid of mobile terminals without constraints

Abstract

The invention provides a method for acquiring advancing directions of pedestrians by the aid of mobile terminals without constraints.The method includes acquiring acceleration, angular speeds and earth magnetic field intensity in preset coordinate systems by the aid of the mobile terminals; acquiring heading angles of the mobile terminals in geodetic coordinate systems by the aid of attitude and heading reference systems AHRS according to the acceleration, the angular speeds and the earth magnetic field intensity; identifying mobile terminal carrying modes; correcting the heading angles according to difference between heading of the pedestrians and the mobile terminals in the identified mobile terminal carrying modes so as to obtain the advancing directions of the pedestrians.The method for acquiring the advancing directions of the pedestrians by the aid of the mobile terminals without the constraints has the advantages that movement directions of the pedestrians can be determined by the aid of the mobile terminals, positional relations between the mobile terminals and the pedestrians are free of constraints, in other words, the different mobile terminal carrying modes can be identified by the aid of the method, and accordingly actual action directions of the pedestrians can be acquired according to different conditions; operation procedures are simple, and the method is easy to implement and wide in application.

Description

technical field [0001] The invention relates to the technical field of pedestrian positioning, in particular to a method for obtaining the direction of pedestrians by using a mobile terminal without restriction. Background technique [0002] With the development of positioning technology and the popularization of smart phones, people's demand for Location-Based Service (LBS) is increasing day by day. At present, the most important means of navigation and positioning is still satellite positioning, such as the Global Positioning System (GPS) (Global Positioning System), Beidou Satellite Navigation System (BDS) (BeiDou Navigation Satellite System) and so on. However, when the user's active area is located indoors or in an environment covered by buildings, the accuracy of satellite positioning will be reduced due to the blocking and attenuation of satellite signals, or even unusable. In order to obtain good navigation and positioning results indoors or in environments with bui...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for unrestricted use of mobile terminals to obtain the direction of pedestrians, so as to solve the problem that the existing method of locating the direction of pedestrians is limited by the direction of the mobile phone and cannot be used in other situations

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