Research On Distributed Target Tracking Algorithm For Wireless Mobile Sensor Network

WMSN(Wireless Mobile Sensor Networks) is one kind of WSN(Wireless Sensor Networks),which is consisted of dispersed moblie nodes.Every node has sensoring,computing and communication abiIity that traditional static nodes have, except having mobile ability.The mobile nodes can be disposed alone without relying any other objects.The mobile targets tracking for WMSN requires the whole network move with the movement of targets,in order to ensure the targets can be seen by the network.It is the most distinct difference between the dynamic targets tracking for WMSN and target tracking for traditional WSN(Wireless Sensor Networks).The main researches of this paper are energy validity,low complexity location algorithm,and distributed target tracking algorithm etc.The design proposal of experiment platform of WMSN is provided too.Based on the analysis of traditional 7-layer constructure of ISO and existing constructure of WSN,the cross-layer constructure that suits for the application of WMSN is provided.After having analyzed the existing power control algorithms based on cross-layer,and pointed out the shortcoming of these algorithms,the experiments of measuring data are done many times.The design and realization methods of new cross-layer power control algorithm have been provided in this paper,based on analyzing and disposing the data from experiments.Analyzing the topology algorithm of WSN,and pointing out the reason why it cann't suit for WMSN,then the hiberarchy dynamic topology algorithm and node disposal independencely algorithm which suit for WMSN is provided.It is the premise for realizing targets location and tracking.The premise of targets tracking in WMSN is position coordination of nodes. After having analyzed a plenty of experimental data,then got the statistical model,a low complexity wireless node location algorithm using RSSI as method of measuring distance is provided.In the real using process,the algorithm uses least square method to amend the data to dispel the influence caused by all kinds of molestation.The target tracking algorithm for WMSN is divided into two phases in this paper,one phase is forecast of moving trend and another is leading of later nodes, the content of evey phase is discussed in detail.The distributed target tracking algorithm based on distributed particle filter,combining GMM and average consensus filter is provided to complete the forecast of moving trend.The node leading algorithm based on BFS is provided to realize the leading of later nodes.At last,in order to verify the performance of WMSN,and cut down the developing period of software and hardware,the design proposal of experiment platform of WMSN is provided through analyzing and researching the developing process of node hardware and communication protocol of networks.The researches about wireless mobile sensor networks involve in many fields and several subjects intercrossing such as micro-electronics,robot technology, information technology,computer science and wireless communication and so on. There are a great deal of hard work to be continued on above theories and the application and development of the key technologies.