文章基本信息

标题：An Improved Three-dimensional Localization Scheme based on APIT
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作者：Liu, Linlan ; Zhang, Haili ; Shu, Jian 等
期刊名称：Journal of Networks
印刷版ISSN：1796-2056
出版年度：2012
卷号：7
期号：12
页码：2096-2103
DOI：10.4304/jnw.7.12.2096-2103
语种：English
出版社：Academy Publisher
摘要：In wireless sensor networks, location information is essential to its monitoring activities. In view of the “boundary effect” and lack of accuracy in APIT-3D, this paper proposes an improved three-dimensional localization scheme based on APIT named IAPIT-3D. In the scheme, the probability of misjudgment is reduced by adding the conditions of judgment. On one hand, the signal strength that all of the neighbor nodes receive should be compared with the one of the unknown node. On the other hand, two variables are set for comparison to determine the position of the node relative to the triangular pyramid. Furthermore, narrowing down the targeted area through “Perpendicular Median Surface Cutting” reduces the localization error. The results of simulation show that compared with APIT-3D, IAPIT-3D can improve the accuracy of localization.
关键词：wireless sensor networks;APIT;three-dimensional localization;Perpendicular Median Surface Cutting