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Fourth, the localization results when the number of nodes is 250. As we can see, Figure (a) presents the movement of the anchor nodes. While Figure (b) shows the relation between the estimated and the actual locations of the ordinary nodes with an average localization error of 69.43 m. In contrast, Figure (c) presents the localization results for all anchors and ordinary nodes. As we can see from the results that increasing the node density leads to decreasing the average localization error and, therefore, increasing the localization accuracy of our method. |