Date Added: Dec 2011
Most of existing RFID indoor localization algorithm is based on the signal strength values, reference tags and ranging location. After these algorithms are applied to the occasions of large space and complex environment such as exhibition hall, hospitals and prisons they are facing some problems such as high system cost, deploying difficulties and detecting difficulties of working state of readers. Aiming at the network reader, the authors present an improved localization algorithm which is implemented by tracking real-time objects and detecting the reader's working state, and the system can still work when there are abnormalities in the reader. The experiment results show that the proposed methods can be used in the large space and complex environment.