Open AccessWireless Sensor Network Positioning Method Based on the Boundary of Sea Level in Three-Dimensional Space
Author(s) -
Renyi Shu,
Xiaobo Shen,
Jun Cai,
Li Wang,
Yan Wu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/6/062006
Subject(s) - boundary (topology) , node (physics) , position (finance) , wireless sensor network , computer science , basis (linear algebra) , spatial reference system , topology (electrical circuits) , real time computing , mathematics , computer network , artificial intelligence , geometry , physics , acoustics , mathematical analysis , finance , combinatorics , economics
All locating one unknown node requires at least four reference nodes in a three-dimensional space. If three reference nodes are used, then at least two places can satisfy the result of positioning in a wireless sensor network. Hence, on the basis of the boundary of sea level, the reference nodes are on the sea level below, whereas the unknown nodes are above. Here, we determine the solution of positioning both unknown and reference nodes with different spatial locations to find three reference nodes that are noncollinear and are the nearest to one unknown node. The experiment proves the accuracy of positioning with three reference nodes, which are furnished by the boundary of sea level. We conclude that the method of positioning that only uses three reference nodes can exactly realize the position and simultaneously increase the speed of positioning.