ISSN : 1796-2056
Volume : 3    Issue : 1    Date : January 2008

Multi-target Data Aggregation and Tracking in Wireless Sensor Networks
Maarten Ditzel, Caspar Lageweg, Johan Janssen, and Arne Theil
Page(s): 1-9
Full Text:
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This paper presents the results of a study on the effects of data aggregation for multi-target tracking
in wireless sensor networks. Wireless sensor networks are normally limited in communication
bandwidth. The nodes implementing the wireless sensor network are themselves limited in
computing power and usually have a limited battery life. These observations are recognized and
combined to come to efficient target tracking approaches. The main question to be answered is
how to accurately track multiple targets crossing an area observed by a wireless sensor network,
while limiting the amount of network traffic. Limiting the amount of network traffic reduces the
required bandwidth and reduces the required energy. Various computing power aware data
aggregation strategies are researched. They have been tested in a simulation environment and
compared with each other. The results of the simulations clearly show the benefit of the new data
aggregation strategies in terms of energy consumption and tracking accuracy.

Index Terms
Wireless sensor networks, multi-target tracking, distributed tracking, data aggregation.