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In Wireless Sensor Network (WSN) based tracking, the random factors in the target's movement and the sensors' measurement together with the limited sensing ability will cause target loss. Therefore, target loss probability is important for the WSN design and performance evaluation. In this paper, a theoretical analysis of the target loss probability with other key parameters is carried out. Based on the analysis, an adaptive-radius activation policy is developed to reduce target loss. Numerical examples demonstrate adaptive-radius activation policy is effective.
Date of Conference: 20-22 Dec. 2010