2Lee Dik Lun,Xu Jian-Liang,Zheng Bai-Hua et al.Data management in location-dependent information services.IEEE Pervasive Computing,2002,1(3):65-72
3Gu Hong-Liang,Shi Yuan-Chun,Xu Guang-You et al.A core model supporting location-aware computing in smart classroom//Proceedings of the 4th International Conference on Web-based Learning.Hong Kong,2005:1-13
4McNeff J G.The global positioning system.IEEE Transactions on Microwave Theory and Techniques,2002,50 (3):645-652
5Roy Want,Andy Hopper,Veronica Falcio et al.The active badge location system.ACM Transactions on Information Systems,1992,10(1):91-102
6Bahl P,Padmanabhan V N.RADAR:An in-building RF-based user location and tracking system//Proceedings of the 19th Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM 2000).Tel Aviv,Israel,2000:775-784
7Ni L M,Liu Yun-Hao,Lau Yiu Cho et al.LANDMARC:Indoor location sensing using active RFID.Wireless Networks,2004,10(6):701-710
8Jay Werb,Colin Lanzl.Designing a positioning system for finding things and people indoors.IEEE Spectrum,1998,35(9):71-78
9Priyantha N B,Chakraborty Anit et al.The Cricket locationsupport system//Proceedings of the 6th ACM Annual International Conference on Mobile Computing and Networking.Boston,USA,2000:32-43
10Andy Harter,Andy Hopper,Pete Steggles et al.The anatomy of a context-aware application.Telematics and Informatics,2002,8(2):187-197
