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Research on Mobile Target Tracking in Wireless Sensor Networks

Author: YuTao
Tutor: SunYan
School: Nanjing Normal University
Course: Computer Applications
Keywords: Wireless sensor networks Target tracking Compressed Sensing Redundant dictionary
CLC: TP212.9
Type: Master's thesis
Year: 2011
Downloads: 66
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Abstract


Target tracking is one of the applications of wireless sensor networks the most attractive and representative . How to avoid the limited energy of sensor nodes , limited computing power , limited communication capabilities defects , give full play to the number of sensor network node , flexible topology and low communication delay advantage has important research significance and value in use . Papers from the wireless sensor network architecture , analyzes the impact of factors from the physical layer to the application layer and target tracking , study and summarize existing target tracking algorithm . The main innovation of this paper in the following two aspects : 1 . Proposed a dynamic scheduling based on double collaborative target tracking and positioning algorithm , the algorithm systematically consider the problem of the different stages in the network target tracking , targeting and target prediction strict the separate , better coordinate the relationship between the two , the orientation preferred the most appropriate detection and positioning of the nodes . The theoretical analysis and experimental results show that this method has achieved good results in to reduce wireless sensor network power consumption and improve positioning accuracy . 2 . Tracking and locating algorithm based on compressed sensing technology , the algorithm uses a monitoring area the node field strength sparsity principle , the establishment of a redundancy detection domain dictionary monitoring area , moving target arrives dictionary with matching pursuit algorithm the MP is preferred the most suitable location node . The alternative node maximized, involved in the positioning node Optimizer . Simulation results show that : the algorithm to achieve the best positioning nodes and high positioning accuracy .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Sensor applications
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