A dynamic differential positioning method based on map matching for mobile communication terminals

Abstract

The invention discloses a dynamic differential positioning method for a mobile communication terminal based on map matching. The method comprises the following steps: obtaining surrounding base station information; using the base station information database to find the latitude and longitude coordinates of the surrounding base station points according to the obtained base station information; calculating the latitude and longitude coordinates of the mobile communication terminal; marking the location of the mobile communication terminal on the map according to the latitude and longitude coordinates of the mobile communication terminal, After removing the historical location coordinates that deviate greatly from the fitting trajectory, fit the remaining historical locations to form a motion trajectory; compare the direction angle and distance difference between the fitted motion trajectory and the road on the map, match the closest street road, and remove the motion The location point on the trajectory that deviates greatly from the matched road; draw the standard path on the map, and repeat the preceding steps. The present invention adopts the method of difference to carry out data fitting, so that the positioning is more accurate, and at the same time, the cost of positioning is also reduced, and the problem of difficult positioning and navigation of the base station is effectively solved.

Description

technical field [0001] The invention relates to the technical field of positioning of mobile communication terminals, in particular to a dynamic differential positioning method for mobile communication terminals based on map matching. Background technique [0002] There are two types of mobile positioning technologies, one is based on GPS positioning, and the other is based on the positioning of the base station of the mobile operating network. Nowadays, various technologies that require the use of positioning systems, such as mobile phone maps and car navigation, mostly use GPS-based positioning. But at the same time, a considerable number of users are unwilling to turn on the GPS and use the GPS satellite positioning system. The GPS function will sometimes share location information without the user's knowledge, causing the user's information to leak. In the case of potential safety hazards in GPS, using mobile phone base station positioning is a good alternative. In add...

AI Technical Summary

Problems solved by technology

Although the current mobile positioning technology can basically meet the needs of the majority of users, there is still much room for improvement in terms of accuracy and security.

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