High-precision three-dimensional positioner for wireless sensor network node

Abstract

The invention belongs to the technical field of own positioning of a wireless sensor network node and particularly relates to a high-precision three-dimensional positioner for a wireless sensor network node. Firstly, a three-dimensional target function in which a reciprocal of a range error is used as a weight is defined; during solving of range equations, an equation with a minimum ranged value is selected as a public power decreasing equation which has the lowest probability of noise pollution; power decreasing is realized by subtracting the selected public power decreasing equation from other equations in the range equations; then optimized solving is performed on the target function by using a particle swarm optimization method; and finally, the acquired optimal solution is used as a coordinate of an unknown node. The three-dimensional positioner is high in positioning precision, the method is simple and easy to implement, and the three-dimensional positioner has the advantages of higher error tolerance capability and good application prospect.

Description

technical field [0001] The invention belongs to the technical field of self-positioning of wireless sensor network nodes, and in particular relates to a high-precision three-dimensional locator of wireless sensor network nodes. Background technique [0002] Wireless sensor network integrates sensor technology, wireless communication technology and integrated circuit technology. It has attracted extensive attention of researchers and has been widely used in many fields such as military security, environmental monitoring, geological exploration and industrial control. [0003] Sensor network nodes are both information routers and information transmitters, so they are the most important components of wireless sensor networks. In practice, monitoring data without location information is usually meaningless, and determining the location of the node collecting data is one of the most basic functions of wireless sensor networks. Usually, a wireless sensor network has a large numbe...

AI Technical Summary

Problems solved by technology

In the 3D environment, due to factors such as the increase of unknown position information and the increase of ranging errors, if the 2D positioning method is directly extended to the 3D positioning method, it is easy to cause problems such as an increase in cumulative error and a decrease in positioning accuracy.

So far, for the problem of three-dimensional positioning of wireless sensor network nodes, there is no internationally recognized good solution

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