The Open Automation and Control Systems Journal
2013, 5 : 154-160Published online 2013 December 13. DOI: 10.2174/1874444301305010154
Publisher ID: TOAUTOCJ-5-154
Research on Ranging Optimization and Twice-Weighted Centroid Calculation in Wireless Sensor Network Localization Algorithm
School of Industrial Manufacturing,
Chengdu University, Chengdu, Sichuan 610106, China.
ABSTRACT
In practical applications of ranging technology commonly used in wireless sensor positioning algorithm, ranging between nodes will inevitably produce errors due to environmental factors and measurement hardware effects. The wireless sensor network localization algorithm DGC-TWCL proposed in this paper takes advantage of the Cayley-Menger determinant used to provide distance geometry constraints(DGC) in two-dimensional real space to optimize and correct the ranging error, combined with the twice-weighted centroid localization(TWCL) calculation, the final position of the unknown node can be obtained. The experiment results show that the algorithm can get the positioning results with higher accuracy and better robustness.