A distributed range-free correction vector based localization refinement algorithm
| Autor: | Xiaorong Xu, Yingbiao Yao, Xianyun Chen, Ke Zou |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Computer Networks and Communications
Computer science 010401 analytical chemistry 0202 electrical engineering electronic engineering information engineering 020206 networking & telecommunications 02 engineering and technology Electrical and Electronic Engineering Dissipation 01 natural sciences Algorithm Wireless sensor network 0104 chemical sciences Information Systems |
| Zdroj: | Wireless Networks. 22:2667-2680 |
| ISSN: | 1572-8196 1022-0038 |
| Popis: | Localization problem is an important and challenging topic in today's wireless sensor networks. In this paper, a novel localization refinement algorithm for LAEP, which is a range-free localization algorithm by using expected hop progress, has been put forward. The proposed localization refinement algorithm, called as CVLR, is based on position correction vectors and can resolve the LAEP's hop-distance ambiguity problem, which can lead to adjacent unknown nodes localized at the same or very close positions. CVLR can make full use of the relative position relationship of 1-hop neighboring nodes (called as CVLR1), or 1-hop and 2-hop neighboring nodes (called as CVLR2), to iteratively refine their localization positions. Furthermore, from localization accuracy and energy dissipation perspective, we optimize the communication process of CVLR2 and propose an energy-efficient improved CVLR. Simulation results show that the localization accuracy of CVLR1, CVLR2, and the improved CVLR are obviously higher than that of LAEP and DV-RND. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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