Integration of GPS with a WiFi high accuracy ranging functionality

作     者：Khalid NUR Shaojun FENG Cong LING Washington OCHIENG 

作者机构：Centre for Transport StudiesDepartment of Civil&Environmental EngineeringImperial College LondonLondonSW72AZUK Department of Electrical&Electronic EngineeringImperial College LondonLondonSW72AZUK 

出 版 物：《Geo-Spatial Information Science》 (地球空间信息科学学报（英文）)

年 卷 期：2013年第16卷第3期

页      面：155-168页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：Engineering and Physical Sciences Research Council  EPSRC  (EP/G01969X/1) 

主　　题：GPS integration time estimation WiFi Improved FOCUSS for Arrival Time Estimation(IFATE) Time Difference of Arrival(TDOA) WLAN IEEE802.11g 

摘      要：High accuracy seamless positioning is required to support a vast number of applications in varying operational *** the last few years,the global positioning system(GPS)has become the de facto technology for positioning ***,its performance is limited in indoor and dense urban environments due to multipath as well as signal attenuation and blockage.A number of techniques integrating GPS with other positioning technologies have been developed to address the limitations of standalone GPS in these difficult *** most of the developed techniques cover the outages of GPS in such environments,they do not provide acceptable performance,in terms of positioning accuracy,especially for some mission-critical(***)*** paper proposes a tightly coupled(*** the measurement domain)GPS/WiFi integration method which,in addition to addressing GPS outages,improves the overall positioning accuracy to the meter-level,thus satisfying the requirements of a number of location based services and intelligent transport systems *** performance of the proposed GPS/WiFi integration method is assessed for a number of scenarios in a simulation environment for an identified dense urban area in London,UK.