1Bahl Paramvir,Padmanabhan Venkata N.RADAR:an in-building RF-based user Location and tracking system[A].Proceedings-IEEE INFOCOM[C],Tel Aviv,Isr,2000:775-784.
2L.Girod and D.estrin.Robust range estimation using acoustic and multimodal sensing[A].IEEE International Conference on Intelligent Robots and Systems[C],Maui,Hl,United states,2001:1312-1320.
7Bahl P, Padmanabhan V N. RADAR: An Inbuilding RF-based User Location and Tracking System[C]//Proc. of IEEE INFOCOM'00. Tel Aviv, Israel: [s. n.], 2000.
8Hatter A, Hopper A, Steggles P, et al. The Anatomy of a Context Aware Application[J]. Wireless Networks, 2002, 8(2/3): 187-197.
9Girod L, Estrin D. Robust Range Estimation Using Acoustic and Multimodal Sensing[C]//Proc. Of IEEE International Conference on Intelligent Robusts and Systems. [S. 1.]: IEEE Press, 2001.
10Bulusu N, Heidemann J, Estrin D. GPS-less Low Cost Outdoor Localization for Very Small Devices[J]. IEEE Personal C6hamuni- cations Magazine, 2000, 7(5): 28-34.
