2HE Tian, HUANG Cheng-du, BIUM B M. Range-free localization schemes for large scale sensor networks[C]//9th Annual International Conference on Mobile Computing and Networking. New York: ACM, 2003:81-95.
3BAHL P,PADMANABHAN V N. RADAR.. An in-building RF-based user location and tracking system[C]//19th Annual Joint Conference of the IEEE Computer and Communications Societies. Tel Aviv: IEEE Press, 2000: 775- 784.
4LE B L, AHMED K, TSUJI H. Mobile location estimator with NLOS mitigation using Kalman filtering[C]//IEEE Wireless Communications and Networking Conference. New Orleans. IEEE Press,2003:1969-1973.
5LATIFF L A, ALl A, OOI C C, et al. Development of an indoor GPS-free self-positioning system for mobile ad hoe network (MANET)[C]//IEEE International Conference on Jointly Held with the Z005 IEEE 7th Malaysia International Conference on Communication. Malaysia: IEEE Press, 2005:1062-1067.
6YAN Xiao-yong, QIAN Huan-yan, HUANG Ya, et al. A high accuracy localization based on RSSI measurements [C] // International Conference on Consumer Electronics, Communications and Networks (CECNet). Xianning: IEEE Press, 2011 : 1926-1929.
7SARRATE J, PALAU J, HUERTA A. Numerical representation of the quality measures of triangles and triangular meshes[J]. Numerical Methods in Biomedical Engineering, 2003,19 (7): 551-561.
