A Novel Lightness Localization Algorithm Based on Anchor Nodes Equilateral Triangle Layout in WSNs

摘要: Localization, which determines the geographical locations of sensors, is a crucial issue in wireless sensor networks. In this paper, we propose novel lightweight equilateral triangle localization algorithm (LETLA) that accurately localizes sensors and minimizes power consumption. LETLA, approximate coordinates substituted for real unknown node, corresponding optimization problem formulated to minimize estimation error. With sequences represent ranking distances from anchors simple robust technique developed quickly efficiently estimate region containing coordinates, condition under error can be minimized given. This employs new geometric construct anchor layout called diagrams. Extensive simulations show LETLA performs better than other state-of-the-art approaches terms energy consumption with same precision.