Approximate Point in Triangulation (APIT) based Localization Algorithm in Wireless Sensor Network

Wireless sensor Networks (WSN) is a collection of sensor nodes that performs transactions of data between themselves lacking the reliance on a wired backbone network. Sensor nodes are normally discriminated by their manipulated processing, domination and recollection resources. Localization is important when there is an uncertainty of the exact location of some fixed or mobile devices. An effective localization algorithm can then use all the available information from the wireless sensor nodes to infer the position of the individual devices .The localization methods could be divided into range methods, that would compute an estimation of the distances between two motes, or range-free methods, that would not. This paper proposed the localization and tracking the targets with efficient utilization of energy by using APIT method.