TTSL iterative localization algorithm in wireless sensor networks

Iterative Multilateration is widely used in multi-hop wireless sensor networks, where few anchor nodes are deployed in a large area. To compensate for the lackness of robustness in iterative localization when there are sufficient numbers of reference nodes around some blind node, a new estimation algorithm called TTSL is proposed in this paper. Firstly, we obtain all samples using trilateration from every combination of three reference nodes. Then the location of the blind node is estimated. Simulation experiments show that the proposed TTSL algorithm can reduce the position error sufficiently.