1LIU Hui,DARABI H. Survey of Wireless Indoor Positio- ning Techniques and Systems [J]. IEEE Transaction on Systems Man and Cybernetics, 2007,37 (6) : 1067-1080.
2HUANG Yi-hua. The Topology Analysis of Reference Tags of RFID Indoor Location System[C]//2009 third IEEE In- ternational Conference on Digital Ecosystems and Techno- gies. 2009 : 313-317.
