Open AccessImproved localisation method based on multi‐hop distance unbiased estimation
Author(s) -
Wei Quanrui,
Zhong Dexing,
Han Jiuqiang
Publication year - 2014
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2014.0263
Subject(s) - hop (telecommunications) , computer science , range (aeronautics) , wireless sensor network , algorithm , distance measurement , computer network , artificial intelligence , materials science , composite material
Range‐free, distributed localisation method is a challenging issue in wireless sensor networks (WSN). Typical hop count‐based localisation methods assume that the Hopsize for different hop count is the same. However, many observations in WSN indicate that this assumption does not always correspond to the practical situation. In this study, the authors propose an approximate distribution of k ‐hop node distance and derive the expectation of k ‐hop node distance under the above distribution. Furthermore, the authors propose a novel range‐free localisation method based on the multi‐hop distance unbiased estimation (MDUE), and the simulation results demonstrate that more accurate distance and localisation can be obtained by MDUE than the state‐of‐the‐art methods.