A Range-free Localization Algorithm for WSN based on Error Correction and Multi-Hop | Zendy

Xiu- Wu | Zendy; Feng Zhang | Zendy; Fei- Sheng | Zendy

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A Range-free Localization Algorithm for WSN based on Error Correction and Multi-Hop

Author(s) -

Xiu- Wu,

Feng Zhang,

Fei- Sheng

Publication year - 2016

Publication title -

international journal of computer applications

Language(s) - English

Resource type - Journals

ISSN - 0975-8887

DOI - 10.5120/ijca2016911713

Subject(s) - computer science , hop (telecommunications) , range (aeronautics) , algorithm , computer network , composite material , materials science

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.

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