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DV-Hop algorithm is one of the important range-free localization algorithms. Three improved methods are put forward in this paper to settle the larger location error of the classic DV-Hop localization algorithm. First, the average hop-size of each anchor node is calculated by adopting least squares method. Second, the distance between unknown nodes and anchor nodes is refined by means of the average...
Node localization in the wireless sensor network (WSN) proves to be a crucial technique. In some special occasions, the precisions of conventional techniques cannot meet our needs due to the multipath influence. In this paper, a novel node localization scheme based on time reversal(TR) has been proposed. We match the signal to the scattering environment thus it will enhance the accuracy of the position...
This positioning process of the wireless sensor network (WSN) nodes is interfered by multipath, multiple access, especially NLOS transmission effect, Basing on TOA/TDOA positioning technology, the article brings forward TOA/TDOA measurement data model, and improves on a location algorithm which bases on least square support vector machine (LS-SVM). On one network with uniformly distributed nodes,...
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