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Abstract
In the wireless sensor networks,node localization is one of the key technologies.The authors theoretically analyzed DV-HOP algorithm and pointed out the main reason for the error.Then,an improved algorithm was brought out to use correction value as the estimated distance between anchor nodes and unknown nodes.This value was composed of the correction of the multi-hop and anchor node's average distance error.Meanwhile,Total Least Squares(TLS) was applied to node localization to enhance the localization accuracy.Choosing Matlab as the emulator,it is proved that the localization accuracy of the improved algorithm is better than those of the original algorithm and some existing improved algorithms.
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