Positioning correction method, relevant device and relevant system

Abstract

Embodiments of the invention disclose a positioning correction method, a relevant device and a relevant system. The invention assists in improving positioning precision of user terminals in a positioning calculation process by correcting relevant variables of a user terminal position. According to the embodiment of the invention, the method comprises the steps that: m position parameters are a variable relevant to a coordinate position of the user terminals in a positioning algorithm are acquired, and m is an integer greater than 1; a positioning error expression of the user terminals is determined based on the positioning algorithm and the position parameters; channel characteristics of the user terminals are acquired; first corresponding weights of the m position parameters are respectively determined based on the channel characteristics; and statistical summation of positioning errors of the user terminals is carried out by using the first weights and the expression based on preset criteria, and correction values of the position parameters are calculated by using statistical sum functions, wherein the preset criteria are set based on the demand of the user terminals for positioning errors.

Description

technical field [0001] The present invention relates to the field of wireless positioning, in particular to a positioning correction method, a related device and a system. Background technique [0002] Wireless positioning is a technology to determine the position of people or objects through wireless signals. It has been widely used. A typical example is the application of Global Positioning System (GPS, Global Positioning System), which determines the location by receiving satellite signals. In telecommunications Among the positioning services provided by operators, there are also positioning based on mobile communication base station signals. [0003] The principle of wireless positioning technology is that the characteristics of wireless signals, such as signal strength, phase, transmission time, etc., have a corresponding relationship with the location. By measuring the signal characteristics, location-related information can be obtained, and then the location can be es...

AI Technical Summary

Problems solved by technology

However, due to the existence of random variables, the distance estimation di has a large deviation, resulting in the circumferences of the circles not intersecting at one point. The distance estimation di forms a joint expression to take the minimum value. If three circles intersect two by two, then the estimated position will be a certain point in the area where the three circles intersect by two.

However, because the error is enlarged during the positioning operation, the actual coordinate point of the user terminal may not be in the area where the three circles intersect two by two, so the average error and maximum error of positioning are relatively large, and the positioning effect is not good.

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