Research And Design Of Energy Efficient Target Tracking Based On Wireless Sensor Networks

Target tracking based on wireless sensor networks gets target's mobile information, such as location, speed, trajectory and so on through the collaboration of the wireless sensor nodes in wireless sensor networks. It is not only one of the basic function of wireless sensor network, but also a typical application .As a result it boosts a deep theoretical research value and a widely practical value in the field of battlefield and traffic.At present, most algorithm designs of target tracking based on wireless sensor networks are only in application layer, target tracking belongs to, neglected the basic facilities, such as wireless sensor node structure, net protocol stack, lack of consideration about the whole of target tracking system. Consequently, although these algorithms have good performance in energy efficiency, real-time performance of tracking reaction, they put a greater demand on basic facilities. Similarly, some algorithms which concern the topology, routing protocol, time synchronization, only pursue energy efficiency, robustness, ignored the whole system.Paper did research and designed algorithms form network topology, routing protocols, time synchronization and application layer four aspects for target tracking based on wireless sensor networks with whole consideration. So, in topology, paper considered the target tracking's characteristics and designed a fast, robustness GAF algorithm, through modifying and integrating existed algorithms; in routing protocol, paper put the executor of routing on the virtual cells created by the process of topology control, to reducing the coupling degree between routing protocol and wireless sensor nodes; in time synchronization, using hierarchical structure created by routing initialization and the data transmission characteristics of target tracking, paper simplified the existed TPSN time synchronization algorithm; in the application layer target tracking belongs to, leading in Agent technology, paper achieved efficient management the wireless sensor nodes in the process of target tracking by using Agent technology's characteristics such as distributed computing, mobility.