Single beacon locating method based on rotary RSS (received signal strength)

Abstract

The invention provides a single beacon locating method based on rotary RSS (received signal strength). According to the single beacon locating method based on the rotary RSS, the distance and the direction constraint of sending nodes relative to receiving nodes are obtained according to rotary RSS information, collected when a person rotates around a wireless receiving device, of a plurality of sending devices, so that the positions of all sending nodes relative to the receiving nodes are obtained; as long as the absolute positions of the receiving nodes all are known, the absolute positions of all the sending nodes can be obtained. The single beacon locating method based on the rotary RSS, which is disclosed by the invention, does not need to depend on special devices, and is an un-discussed new locating method in the field of wireless location; the location of a plurality of unknown nodes is finished in a single beacon scene, the limitation of a basic trilateral location algorithm to the minimum beacon number is broken through, the dynamic adaptability to the environment is good, and the communication overhead is lower.

Description

technical field [0001] The invention belongs to the field of wireless positioning, and relates to a single-beacon positioning method, in particular to a rotating RSS-based single-beacon positioning method. Background technique [0002] In many application scenarios today, such as wireless sensor network monitoring system, smart space, pervasive medical care, end-to-end mobile computing, etc., obtaining the location information of the target is the most basic content, which has attracted a large number of scholars in the past 20 years. related research work. Different from these relatively long-term and fixed application scenarios, it is also necessary to locate the target in some short-term and highly variable application scenarios, such as archaeological excavation sites, construction sites and other relatively mixed scenarios, we need to quickly find scattered Targets at field points, determine their location. [0003] So far, there are a lot of research work on wireless...

AI Technical Summary

Problems solved by technology

Compared with the positioning method based on radio frequency fingerprints, its advantage is that the number of RSS measurements is significantly reduced, and the disadvantage is that the accuracy is relatively poor. For example, EZ uses multiple sets of simultaneous equations for the relationship between RSS and distance to obtain the location information of the mobile terminal.

The above method needs to deploy multiple beacons. For temporary application scenarios, this pre-deployment overhead is quite time-consuming

Several positioning methods in the above-mentioned prior art cannot be well applied to temporary application scenarios

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