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An energy-aware, collaborative tracking algorithm is proposed for ad-hoc wireless sensor networks. The algorithm is implemented distributively by passing sensing and computation operations from one sensor to another. In order to maximize the life-time of the network, this active sensor is chosen by a high end sensor in order to minimize the cost function based on the total energy spent by the network at each time instant. Assuming a wireless ad-hoc sensor network in which low end sensors are randomly distributed with data gathering node as a high end sensor, a state-space model for a target motion and sensor measurement and a cost function based on energy requirements for communication and sensing has been derived. Simulation results for the performance of the proposed scheme have also been presented.
Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE (Volume:3 )
Date of Conference: 21-25 March 2004