Cooperative Calibration Scheme for Mobile Wireless Sensor Network

In various applications of Wireless Sensor Network(WSN), the wildly used low-cost sensors are prone to measurement drift, which requests re-calibration to provide the accurate data. Otherwise, the data gathered by those sensors on massive mobile devices may be unavailable to use. In this research domain, sensor calibration is considered as a challenging problem.In this paper, the authors propose a cooperative calibration method, especially suitable for Mobile Wireless Sensor Network(MWSN). Different from those existing methods, this method introduces auto-calibration among mobile nodes. In the first phase, the calibration is carried out between fixed and selected mobile nodes. The second phase is modeled by the calibration relationship between the mobile sensors. From the experimental evaluation, the proposed scheme shows good efficiency to acquire high calibration accuracy.