大学学术追求卓越发展延续计画.pptVIP

大學學術追求卓越發展延續計畫 年度成果發表 2007.04 下一世代資訊通訊網路尖端技術與應用(二)子計畫四 無線隨意及感測網路技術 陳文村教授 曾煜棋教授 許健平教授 陳志成教授 蔡育仁教授 王晉良教授 張志勇教授 楊舜仁教授 　　　　　 * Outline General Description Breakthroughs and Major Achievements Categorized Summary A Summary of the Post-Project Plan International Cooperation Activities * General Description (1/2) Motivation With the rapid increase in wireless communications, location-aware services have received a great deal of attention for commercial, public-safety, and military applications. Decentralized Positioning Schemes for WSNs Location Estimators for Indoor WLANs Frameworks of the location system Experimental results More than 90 percent of the estimated locations using the proposed location estimator have error distances less than 2.3 meters Goal Developing more effective, accurate, and robust positioning methods for wireless networks * General Description (2/2) The Trajectory of an Mobile Node (MN) based on the WIP Method Weighted Interpolation (WIP) Method Decentralized Positioning Schemes for WSNs Client-Based-Like Location Estimator (Tracking-Assisted) MNs report the joint location information from a decentralized scheme Simulation results Based on the path-loss model More than 90 percent of the estimated locations using the proposed location estimator have error distances less than 2.5 meters * Breakthroughs and Major Achievements (1/2) Technology State-of-the-Art Breakthrough A Decentralized Positioning Method Using Combined the Weighted Interpolation (WIP) with Tracking Algorithms for Wireless Sensor Networks Sensor network source localization via projection onto convex sets (POCS). (A. O. Hero and D. Blatt, University of Michigan, Ann Arbor ) The reliability of the sensors are considered when the sensors compute the global estimate of the location of target location. By employing tracking algorithms at the central server, the simulation results demonstrate that more than 90 percent of the estimated locations usin