Farthest 2 Anchors in Radio Range Localization in Wireless Sensor Networks

Wireless sensor localization has become an essential requirement for realistic applications over wireless sensor networks (WSNs). Although some other systems have been proposed, these methods normally require heavy computational processes to overcome the presence of these errors. Because coarse accuracy is sufficient for most sensor network applications, a method for estimating unknown node positions in a sensor network based exclusively on connectivity-induced constraints is described. In this paper, we present F2A, a novel localization algorithm that is range-free, and its improved scheme AF2A will be proposed. These novel algorithms were algorithms to compute the location of position unknown node without distances measuring between anchors and themselves.