Research on node localization for wireless sensor networks

This paper introduced the development course of wireless sensor network in recent years, and analyzed basic principles of the node localization, and thoroughly discussed typical algorithms of the node localization. Then, aiming at the shortage of three-dimensional localization algorithm, on the basis of number of beacons within the unknown node communication range, the space vector model is built for localization. A new type of three-dimensional localization mechanism in wireless sensor networks is proposed. Simultaneously, the basic principle of localization algorithm and implementation method in simulation environment of NS2 and MATLAB are also given. Simulation results show that the algorithm improves the accuracy of node localization and reduces the impact of algorithm positioning error by communication radius and density of beacons.