Target Tracking Based On Wireless Sensor Network Technology Research

With the rapid development of wireless communication technology, computer technology and Internet technology, wireless sensor network is more and more applied to the realistic environment. Because the sensor node has the advantages of small volume, low power consumption, wireless communication capability strong, the self-organizing strong, this make target tracking in wireless sensor network applications to become a major field, the field is composed of many disciplines cross together. Target tracking based on wireless sensor network(WSN) has become the focus of research at home and abroad in recent years.This paper first introduces the research background and research significance of target tracking, and analyzes target tracking in domestic and overseas research status. Then introduces the target tracking based on WSN mainly used technology, detailed describes the process of target tracking. there is no doubt target trajectory estimation and prediction is one of the main target tracking problem. The sensor network node location technology is the foundation of the realization of target tracking, the analysis of the node localization technology in detail, and discusses the main use of two kinds of node localization algorithm. Finally based on the choice of optimal algorithms in the process of target tracking, the particle filter algorithm is proposed, this algorithm can effectively deal with the nonlinear non-gaussian model, in view of the algorithm may result in sample improvement and weights of degradation problems, based on improved resampling particle filter algorithm is proposed to solve, tracking performance of two algorithms are simulated, compares and analyzes the simulation results.Target tracking based on WSN is a research focus in recent years, in a lot of technology can also be in-depth study and explore. Finally pointed out the direction of the research, and for future development was prospected.