Research of range-based synergetic localization algorithm in wireless sensor networks

Localization error is a widely considered problem in the node localization of wireless sensor network. The error can be caused by many reasons, and the most important three reasons are measurement distance, localization cumulative error and the number of anchor nodes. This paper proposes a range-based synergetic localization algorithm, which makes the best of all the sensor network for localization, using TDOA technology to reduce measurement error, and introducing the concept of classification to reduce error cumulative. Experimental results show that the proposed algorithm can achieve high accurate localization with fewer anchor nodes.