Research on the Self-localization of Wireless Sensor Networks

Self-localization is a key function in wireless sensor networks (WSNs). Many applications and internal mechanisms require nodes to know their location. Based on two different application environments and from the view of anchor nodes density, this paper proposes two new algorithms for distributed cooperative localization: Centroid-based with Preplaced Beacon Localization and Centroid-based with Scalable Node Localization. Both of them are simulated and analyzed in a two-dimensional (2-D) space simulation model of Matlab.