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A 3D Location Method for Wireless Sensor Network Nodes Based on AC SCE-PSO Algorithm

A technology of SCE-PSO and wireless sensor, which is applied in the direction of wireless communication, electrical components, etc., and can solve problems such as not reflecting information exchange

Active Publication Date: 2020-02-18
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, there are multiple complex shapes in the SCE-PSO algorithm, and the formula (1) does not reflect the information exchange between each complex shape

Method used

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  • A 3D Location Method for Wireless Sensor Network Nodes Based on AC SCE-PSO Algorithm
  • A 3D Location Method for Wireless Sensor Network Nodes Based on AC SCE-PSO Algorithm
  • A 3D Location Method for Wireless Sensor Network Nodes Based on AC SCE-PSO Algorithm

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Embodiment Construction

[0060] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation examples.

[0061] The three-dimensional positioning method of wireless sensor network nodes based on the AC SCE-PSO algorithm in the present invention abstracts the three-dimensional positioning problem of wireless sensor network nodes into a nonlinear unconstrained optimization problem by defining an objective function, and then uses the proposed AC SCE-PSO algorithm Solve this nonlinear unconstrained optimization problem, and the solution obtained is the estimated value of the three-dimensional coordinates of the wireless sensor network nodes.

[0062] The three-dimensional locator of the present invention undergoes the following steps successively:

[0063] Step (1) Look for unknown nodes that can be located

[0064] In the initial stage of the network, each sensor node is assigned an ID number, and the anchor node and the unknow...

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Abstract

The invention designs a three-dimensional positioning method for wireless sensor network nodes based on the AC SCE-PSO algorithm. In the particle velocity update process in the SCE‑PSO algorithm, the information exchange between each complex shape is introduced, so a new algorithm communication SCE‑PSO algorithm is proposed. Compared with the SCE‑PSO algorithm, the particles in the AC SCE‑PSO algorithm can obtain more information during the search process, which can speed up the convergence speed and improve the quality of the solution; and the AC SCE‑PSO algorithm also inherits the SCE ‑The advantages of the PSO algorithm, which is less affected by the dimension of the optimization problem, is very suitable for the three-dimensional positioning of wireless sensor network nodes. The invention uses the SCE-PSO algorithm to locate the three-dimensional nodes of the wireless sensor network, thereby improving the node positioning accuracy.

Description

technical field [0001] The invention belongs to the field of node positioning in wireless sensor networks. Background technique [0002] Three-dimensional localization of Wireless Sensor Networks (WSN) nodes is one of the current research hotspots. According to whether it is necessary to measure the distance between nodes, the node localization methods of wireless sensor network can be divided into two methods based on ranging and non-ranging. Among them, the method based on ranging is widely used in wireless sensor network node positioning due to its high positioning accuracy. The positioning method based on ranging first needs to measure the distance or angle between nodes. The commonly used measurement methods include Received Signal Strength Indicator (RSSI), Time of Arrival (TOA), and Time of Arrival (Time of Arrival). Difference of Arrival, TDOA) and Angle of Arrival (AOA). [0003] After obtaining the distance or angle information between nodes, the ranging-based m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 刘伟李卓杨晓斐刘亚荣杨丽燕
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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