3Rabacy J J, Ammer M J, da Silva Jr J L,et al. Picorodio Supports Ad Hoc Ultra - low Power Wireless Networking [J]. Computer,2000,33(7):42 - 48.
4He T,Huang C D,Blum B M,et al. Range - Free Loealiza tion Schemes in Large Scale Sensor Networks[A]. In: Proe. of the 9th Annual Int'l Conf. on Mobile Computing and Net working[C]. San Diego: ACM Press, 2003: 81 - 95.
5Elson J, Griod L, Esrein D. Fine - grained Network Time Synchronization Using Reference Broadcasts[A]. In.. Proc. 5th Syrup. Operating Systems Design and Implementation (OSDI 2002)[C]. Boston,MA. 2002.
6Liu Chong,Wu Kui, He Tian. Sensor Localization with Ring Overlapping Based on Comparison of Received Signal Strength Indicator[A]. 2004 IEEE International Conference on Mobile Ad - Hoc and Sensor Systems[C]. 2004.
7Duvallet F,Tews A D.WiFi position estimation in industrial environments using Gaussian processes[C].Proc of IEEE RSJ,2008:2216-2221.
8Salvatore Cavalieri.WLAN-based outdoor localization using pattern matching algorithm[J].International Journal of Wireless Information Networks,2007,14(4):265-279.
9Sinan Gezicil.A SU rvey on Wi reIess Position Estimation[J].Wireless Personal Communications,2008,44(3):263-282.
10Binghao Li,Ishrat J Quader,Andrew G Dempster.On outdoor positioning with WiFi[J].Journal of Global Positioning Systems,2008,7(1):18-26.
3Fanping Bu. Pedestrian Detection in transit bus application: sensing technologies and safety solutions[C]//IEEE Intelligent Vehicles Symposium 2005, Las Vegas, Nevada: IEEE Conference Publications, 2005 : 100-105.
4Massimo Bertozzi,Alberto Broggi, Roland Chapuis,et d. Shape- based pedestrian detection and localization[C]//IEEE Intelligent Transportation Systems 2003, Shanghai : IEEE Conference Publications, 2003 : 328- 333.
5Khoudour L,Deparis J P, Duvieubourg L. Linear image sequence analysis for passengers counting in public transport[C]//International Conference on Public Transport Electronic Systems 1996, London, UK :IET Conference Publications, 1996 : 100-104.
6Xiaoyu Huang,Liyuan Li ,Terence Sim. Stereo- based human head detection from crowd scenes[C]//International Conference on Image Processing 2004,Singapore: IEEE Conference Publications,2004(2) : 1353-1356.
7Huang D, Chow T W S,Chau W N. Neural network based system for counting people[C]//Industrial Electronics Society,IEEE 2002 28th Annual Conference of the IEEE Industrial Electronics Society, Sevilla, Spain : IEEE Conference Publications, 2002 (3) : 2197-2201.
