UWB base station coordinate automatic calibration method and system based on optimization theory

Abstract

The invention provides a UWB base station coordinate automatic calibration method and system based on an optimization theory, and the method comprises the following steps: arranging a minimum UWB system, and enabling base stations A0, A1 and A2 and a label T0 to be placed at corresponding positions; setting the A0 point as an original coordinate point, and establishing a rectangular coordinate system by taking the direction from the A0 point to the A1 point as an X axis; reading the initial coordinates of each point of the minimum UWB system, and calculating the distance between any two points in the minimum UWB system; substituting the values of all the distances into an optimization equation to obtain a total residual value, and updating the coordinate value of each point at the same time; circularly calculating a new total residual value generated in the process according to the updated coordinates; when the total residual value is smaller than the expected value, regarding the current index as the optimal index, and obtaining the calibration coordinate values of the base stations A1 and A2 in the minimum UWB system according to the optimal index. The distance automatically measured by the base station is used as the input of the optimization problem, the base station coordinate value with the minimum error is calculated through the optimization equation, and automatic calibration is achieved.

Description

technical field [0001] The invention relates to the field of information communication technology, in particular to a method and system for automatically calibrating UWB base station coordinates based on optimization theory. Background technique [0002] The optimization method mainly uses mathematical methods to study the optimization methods and schemes of various systems, and provides the basis for scientific decision-making for decision makers. The main research object of the optimization method is a variety of organized system management problems and their production and operation activities. The purpose of the optimization method is to obtain an optimal plan for the rational use of resources for the system under study, to develop and improve the efficiency and benefits of the system, and finally to achieve the optimal goal of the system. [0003] Ultra-wideband positioning (UWB) technology is a major breakthrough in the field of radio frequency application technology....

AI Technical Summary

Problems solved by technology

[0004] However, in the process of actual use, since the positioning (X, Y) of the uwb tag depends on the measured distance between the uwb tag and the base station and the coordinate value of the base station, and the calibration of the base station coordinates relies on manual calibration, manual calibration is not only cumbersome , and it is easy to calibrate inaccurately. If it is inaccurate, there will be space distortion of uwb tag positioning measurement

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