An improved localization algorithm based on DV-Hop in wireless sensor networks
Article
Figures
Metrics
Preview PDF
Reference
Related
Cited by
Materials
Abstract:
Due to high error of positioning in the uneven distribution of wireless sensor network node for the DV-Hop algorithm, an improvement for the DV-Hop algorithm is presented. The main idea of this improvement is to use the received signal strength indicator measurement technique to increase the anchor nodes; then, the concept of “region of existence possibility ” is introduced under certain constraints, especially, the area of “region of existence possibility ” is regarded as the objective function of optimization problem, which is solved by using the nonlinear conjugate gradient method to approach the position of a unknown node, to minimum the node positioning error. Simulation result shows a 5% to 10% increase in positioning accuracy under the impact of different node communication radius and anchor node ratio, which validated the improvement.
Keywords:
Project Supported:
Supported by National Innovation and Entrepreneurship Program of College Students(201310635042)and National Natural Science Foundation of China(61170248,61373179).
