RSS Based Localization Scheme Using Angle-Referred Calibration in Wireless Sensor Networks

摘要

In wireless sensor networks (WSNs), one of the conventional techniques for localization is the received signal strength (RSS) method where the RSS is utilized to get the distance measurement spatially between sensor nodes. However, in real localization system, the RSS is sensitively affected by many surrounding factors and tends to be unstable, so that it degrades accuracy in distance measurement. In this paper, we propose the angle-referred calibration based RSS method where angle relation between sensor nodes is used to perform the calibration for better performance in distance measurement. As results, the proposed scheme shows that it can provide a higher precision than the omni-direction calibration.