Efficient Localization based on Imprecise Anchors in RFID System Observation Scanning time 2.5 Relationships among Tag size, Power and Tag density 0。。。·4·。。 Increase the scanning power (s)ew!L 1.5 b The number of tags increases b The scanning time increases 0.5 b Control the power to limit the 0 50 100 150 number of tags The number of identified tags in the detection region Xiang Lu,Lei Xie,Yafeng Yin,Wei Wang,Baoliu Ye,Sanglu Lu State Key Laboratory for Novel Software Technology,Nanjing University,ChinaObservation Xiang Lu, Lei Xie, Yafeng Yin, Wei Wang, Baoliu Ye, Sanglu Lu State Key Laboratory for Novel Software Technology, Nanjing University, China Efficient Localization based on Imprecise Anchors in RFID System Relationships among Tag size, Power and Tag density Scanning time The number of tags increases The scanning time increases Control the power to limit the number of tags in the detection region Increase the scanning power