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Efficient in-network moving object tracking in wireless sensor networks

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Fig. 1. (a) The Voronoi graph of a sensor network. The arrival and departure rates between sensors are the numbers associated with arrows
Table 1 summaries the notations used in this paper.
Fig. 3. Four possible location tracking trees for the graph in Fig. 1(b).
Fig. 6. An example of the Z-DAT algorithm with  ¼ 4. (a) In the first iteration, we divide the field into    zones and adjust their boundaries according to 
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