Indoor positioning method based on UWB technology

An indoor positioning and technology technology, applied in the field of positioning based on UWB technology, can solve problems such as communication collisions, affecting positioning accuracy, and affecting data reception, and achieve the effects of ensuring positioning accuracy, reducing the probability of communication collisions, and shortening the allocation time
CN110225461AActive Publication Date: 2019-09-10GUODIAN LONGYUAN ELECTRICAL +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUODIAN LONGYUAN ELECTRICAL
Publication Date
2019-09-10

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Abstract

The invention provides an indoor positioning method based on a UWB technology, and mainly solves the problem of communication collision of UWB multi-positioning tags in the prior art. According to thepositioning method, a time division multiplexing technology is adopted in a time domain, time slots of positioning tags are managed and distributed in a unified mode by setting reference base stations, time slot occupation conditions are marked by adopting a bitmap algorithm, and idle time slots are quickly found; a corresponding relation between the positioning tag and the use time slot is recorded by adopting red-black tree index; and the time slot is recovered by adopting the longest non-use elimination algorithm. According to the method, the time slot searching and distribution of the positioning base station end are optimized, the time slot distribution time is shortened to the maximum extent, the probability of communication collision can be effectively reduced, the positioning precision is ensured, and the requirements of different positioning modes can be met.
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Description

technical field

[0001] The invention relates to the field of wireless communication and positioning systems, in particular to a positioning method based on UWB technology. Background technique

[0002] UWB is a carrier-free communication technology that uses nanosecond to picosecond-level non-sinusoidal narrow pulses to transmit data. By transmitting extremely low-power signals over a wide frequency spectrum, UWB can achieve data transmission rates from hundreds of Mbit / s to several Gbit / s within a range of about 10 meters. It has strong anti-interference performance, high transmission rate, large system capacity and very small transmission power. The communication device can realize the communication with the transmission power less than 1mW. Its electromagnetic radiation has little impact on the human body and has a wide range of applications. Especially in the field of indoor personnel positioning, this technology is widely used and is one of the most promising indoor ...

Claims

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