Localization algorithm based on region segmentation line for wireless sensor networks

In order to improve the issue about the low localization accuracy of unknown nodes, this paper proposes a kind of improved region segmentation localization algorithm. Under the precondition of building the mathematical model of region segmentation, the algorithm utilizes the ratio which the unknown node received signal strength from the beacon nodes comparing with the signal strength scale factor of the region segmentation line to make sure the sub region of the unknown node. The algorithm calculates the centroid coordinate of this sub region and takes the centroid coordinate as the location coordinate of the unknown node. The simulation results show that the average localization accuracy has been improved compared with centroid localization algorithm and improved centroid localization algorithm.