期刊
JOURNAL OF SYSTEMS ENGINEERING AND ELECTRONICS
卷 22, 期 2, 页码 347-352出版社
SYSTEMS ENGINEERING & ELECTRONICS, EDITORIAL DEPT
DOI: 10.3969/j.issn.1004-4132.2011.02.024
关键词
wireless sensor network; target tracking protocol; predictive algorithm; recovery mechanism
类别
资金
- National Basic Research Program of China (973 Program) [2010CB731800]
- National Natural Science Foundation of China [60934003, 60974123, 60804010]
- Hebei Provincial Educational Foundation of China [2008147]
Remote tracking for mobile targets is one of the most important applications in wireless sensor networks (WSNs). A target tracking protocol-exponential distributed predictive tracking (EDPT) is proposed. To reduce energy waste and response time, an improved predictive algorithm-exponential smoothing predictive algorithm (ESPA) is presented. With the aid of an additive proportion and differential (PD) controller, ESPA decreases the system predictive delay effectively. As a recovery mechanism, an optimal searching radius (OSR) algorithm is applied to calculate the optimal radius of the recovery zone. The simulation results validate that the proposed EDPT protocol performes better in terms of track failed ratio, energy waste ratio and enlarged sensing nodes ratio, respectively.
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