Positioning method, device and computer-readable storage medium based on fingerprint database

Abstract

The embodiment of the invention discloses a positioning method and device based on a fingerprint database, and a computer readable storage medium. The method comprises the steps: collecting sample data; carrying out the rasterization of an obtained urban planimetric map through preset grids, and obtaining a rasterized map, wherein the preset grids comprise mutually staggered grids; carrying out the random sampling of the sample data, and then enabling the sample data to be corresponding to the rasterized map, so as to build a basic fingerprint database; carrying out the cracking processing ofthe time and space dimensions of the basic fingerprint database, so as to obtain target fingerprint databases; carrying out the initial positioning for many times according to a plurality of target fingerprint databases and a to-be-located base station in MR data, so as to obtain a plurality of initial positioning results; carrying out the weighted converging processing of the plurality of initialpositioning results, so as to obtain a target positioning result. According to the embodiment of the invention, the method can improve the positioning precision.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a positioning method, device and computer-readable storage medium based on a fingerprint library. Background technique [0002] With the development of communication technology and the widespread use of wireless intelligent terminals, LBS services based on user locations have been widely developed and applied. At present, the main methods of terminal positioning include: satellite positioning represented by GPS, WLAN positioning based on WLAN, and base station positioning based on base station. Furthermore, existing base station positioning methods mainly include base station position positioning, wireless propagation model positioning, and fingerprint database positioning. [0003] Among them, the accuracy of base station location positioning and wireless propagation model positioning is difficult to exceed 100 meters, especially in the case of complex geographical...

AI Technical Summary

Problems solved by technology

[0004] (1) Limited by the 10-meter theoretical error of civil GPS satellite positioning in the standard reference system for constructing MR grid fingerprints, the accuracy of the existing MR fingerprint algorithm is difficult to reduce the grid radius after the grid size is fixed at 20 meters further improvement;

[0005] (2) Most of the fingerprint database theoretical schemes are static, without considering the influence of base station wireless environment and changes in geographic information. In the case of large-scale construction of base stations, large fluctuations in the flow of people, and complex geographic information, the error is relatively large

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