Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (12): 3015-3021.doi: 10.13229/j.cnki.jdxbgxb20210552

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Sensor node localization mechanism based on improved DV⁃Hop algorithm

De-hong TANG1(), WANGYi-duo1,Xin-guo MA2()   

  1. 1.School of Industrial Design,Hubei University of Technology,Wuhan 430068,China
    2.School of Science,Hubei University of Technology,Wuhan 430068,China
  • Received:2021-06-21 Online:2022-12-01 Published:2022-12-08
  • Contact: Xin-guo MA E-mail:327040478@qq.com;maxg@hbut.edu.cn

Abstract:

To overcome the shortcomings of current DV-Hop algorithm, such as low positioning accuracy, low positioning efficiency and poor anti-interference ability, a sensor node positioning mechanism based on improved DV-Hop algorithm was designed to achieve ideal positioning effect. Firstly, the factors of large sensor node location error in DV-Hop algorithm were analyzed, and corresponding improvements were made. Then, DV-Hop algorithm was used to estimate the location of sensor nodes preliminarily, and DV-Hop algorithm was used as the initial value of Steffensen iteration model. The optimal sensor node location was obtained through Steffensen iteration. Finally,the simulation results were compared with other sensor node localization algorithms. The results show that the positioning error of the proposed mechanism is small. The average time of sensor node positioning is significantly shortened, and the efficiency of sensor node positioning is significantly improved.

Key words: sensor node, positioning error, DV-Hop algorithm, node positioning efficiency

CLC Number: 

  • TP391

Fig.1

Localization flow of wireless sensor network nodes based on DV-Hop algorithm"

Table1

Wireless sensor network parameters"

编号参数取值及说明
1无线传感器网络大小/(m×m)200×200
2未知节点数/个100
3锚节点数/个25
4节点分布方式锚节点均匀分布,未知节点随机分布
5节点通信半径/m10~30

Fig.2

Comparison of sensor node positioning errors based on three mechanisms"

Fig.3

Comparison of sensor node location time based on three mechanisms"

Fig.4

Relationship between the number of anchor nodes and the average positioning error"

Fig.5

Relationship between the communication radius of sensor nodes and the average positioning error"

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