|International Journal of Computer Applications
|Foundation of Computer Science (FCS), NY, USA
|Volume 151 - Number 3
|Year of Publication: 2016
|Authors: Xiu- Wu Yu, Feng Zhang, Fei- Sheng Fan
Xiu- Wu Yu, Feng Zhang, Fei- Sheng Fan . A Range-free Localization Algorithm for WSN based on Error Correction and Multi-Hop. International Journal of Computer Applications. 151, 3 ( Oct 2016), 27-31. DOI=10.5120/ijca2016911713
Considering analysis of localization algorithm in wireless sensor networks ,and problem of lager error in Distance Vector-Hop(DV-hop)localization algorithm is mainly due to the estimation error of the distance between unknown nodes and anchor nodes, a localization algorithm based on error correction and multi-hop is proposed to reduce location error. The distance-per-hop of anchor is fixed by anchor nodes estimated and actual coordinates, unknown nodes receive limited number of received anchor nodes. According to the distance and the number of hops in a variety of circumstances to determine the distance of each hop distance, and then use the ratio of the square of distance to calculate the unknown node coordinates. Simulation results show that compared with DV-hop and WSGDV-Hop,EM-Hop algorithm can effectively improve the node localization accuracy and reduce the positioning error.