Wireless range finding positioning method under asynchronous base station system and system thereof

Abstract

The invention provides a wireless range finding positioning method under an asynchronous base station system and a system thereof. The method comprises the following steps of storing a time label of respective wireless signal transceiving time on a positioning label terminal and a target base station terminal respectively; acquiring wireless signal propagation time between a positioning label and a target base station; storing and receiving a time label of wireless signal time by each non-target base station; acquiring wireless signal propagation time between the target base station and each non-target base station; acquiring wireless signal propagation time from each non-target base station to the positioning label; and acquiring a position coordinate of the positioning label. In the invention, the positioning label only needs to complete RTTT range finding for one time with any one target base station in a covering area and all the other base stations in a signal overlapping area equivalently complete distance measurement for one time; a distance is calculated and acquired and simultaneously a measurement error generated because the label and a base station clock are not synchronous is reduced.

Description

technical field [0001] The present invention relates to the fields of wireless positioning and wireless ranging, in particular to a wireless ranging and positioning method and system under an asynchronous base station system, especially an improved technical solution for multiple asynchronous base stations to realize simultaneous ranging and positioning. Background technique [0002] With the mature development of relevant technologies and markets in recent years, location-based services (LBS) have gradually attracted the attention of the market, and new applications continue to emerge in various information fields such as consumption, industry, security, and national defense. Under this development trend, both the global positioning system represented by GPS and Beidou, and the real-time positioning system (RTLS) covering indoor and outdoor dedicated environments have experienced rapid growth. At present, the industry is still working hard to promote technological developme...

AI Technical Summary

Problems solved by technology

Compared with the way of synchronous base stations, the communication time of non-synchronous base stations is several times or even ten times longer, which means that the system capacity is greatly reduced and the power consumption is doubled.

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