Correction target three-dimensional positioning method based on wireless communication base station and wireless communication system

Abstract

The invention belongs to the technical field of wireless communication. The invention discloses a correction target three-dimensional positioning method based on a wireless communication base stationand a wireless communication system, and the method comprises the steps: carrying out the weighting of the coordinates of an X axis, a Y axis and a Z axis according to the read coordinates of the basestation and the signal arrival time TOA and measurement data of a target terminal and the base station, and then calculating the coordinate distance from the target terminal to each base station; calculating an average error between the coordinate distance of the target terminal and the measurement distance; judging whether to continuously correct the measurement distance or not according to theaverage error, otherwise, returning to continuously weigh, and if so, fixing a distance correction coefficient; and judging whether to continuously correct the coordinate information according to theaverage error. According to the method, the average positioning error of the X axis and the Y axis is smaller than 0.3 m, the average positioning error of the Z axis coordinate is smaller than 0.5 m,the algorithm complexity is low, the convergence speed is high, good robustness is achieved for noise, and high practical application value is achieved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a three-dimensional positioning method for correcting a target based on a wireless communication base station and a wireless communication system. Background technique [0002] At present, the closest existing technologies are three-edge positioning, triangulation positioning, and least-squares measurement positioning. This method first assigns various points to three-dimensional coordinates, and completes the coordinate positioning and quantification of the target source in the three-dimensional coordinate system, with the purpose of improving accuracy. [0003] Prior art-trilateral ranging positioning, the trilateral ranging algorithm is a frequently used ranging method, the main method is to use the three side distances formed between the three base stations and the unknown target to calculate the position of the target, this This algorithm is low i...

AI Technical Summary

Problems solved by technology

[0019] (1) There is a large positioning error in the existing technology for Z-axis positioning information in complex environments (such as cities and oceans) in 3D positioning

[0020] (2) The existing technology does not consider the positioning noise error caused by the non-line-of-sight multipath propagation of the signal

[0021] (3) The existing technology does not correct the positioning accuracy, resulting in low positioning accuracy

[0022] Difficulty in solving the above technical problems: For the above-mentioned commonly used positioning techniques, due to the uncertainty and complexity of the signal propagation medium, especially for the precise positioning of the target terminal in a three-dimensional environment, it is very important to consider a suitable three-dimensional positioning method for the target. big challenge

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