Method and device for determining movement tracks

Abstract

The invention provides a method and device for determining movement tracks. The method comprises the steps: positions of n original track points P<1>-P<n> in a movement process of a mobile terminal are acquired, wherein the time when the mobile terminal passes through the i original track point P is earlier than the time when the mobile terminal passes through the i+1 original track point P<i+1>; the n original track points P<1>-P<n> are subjected to filtering processing, wherein filtering processing is used for deleting and / or updating the positions of at least one original track point in the n original track points P<1>-P<n>; and according to target track points obtained after the n original track points P<1>-P<n> are subjected to filtering processing, the movement tracks of the mobile terminal on at least one road in a road map are determined. According to the method and device for determining the movement tracks, a map matching process for a high-noise data acquisition mode such as base station positioning is more accurate, and the obtained movement tracks better accord with the actual condition.

Description

technical field [0001] The present application relates to the field of information technology, and more specifically, to a method and device for determining a motion trajectory. Background technique [0002] Map matching is an error correction technology for moving trajectory data. This technology is based on the pattern recognition theory and can be based on the assumption that the vehicle is always driving on the road. The basic idea is to combine the trajectory of the vehicle positioning with the road network in the digital map. Compare and match the vehicle position information measured by the positioning method with the electronic map data of the navigation system to find the road section where the vehicle is located. Positioning technology combined with map matching technology can effectively reduce the error caused by positioning sampling and greatly improve the accuracy of vehicle positioning. It has been widely used in global positioning system (global positioning s...

AI Technical Summary

Problems solved by technology

[0007] Therefore, in the method for determining the motion trajectory of the embodiment of the present application, m target trajectory points are obtained by performing at least one filtering process on the n original trajectory points obtained during the movement of the mobile terminal, and then the m target trajectory points are obtained. Road map matching, and then obtain the movement track of the mobile terminal, can filter or change the track points with large errors and negative effects in the original track points, so that the processed target track points are more accurate in map matching, especially for The high-noise data acquisition method such as base station positioning, as well as the special situation of rapid positioning, make the subsequent map matching process more accurate, and the obtained motion trajectory is more in line with the actual situation

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