文摘
Mobile localization techniques in outdoor environment have been widely studied. In this paper, we consider a specific application related to search and rescue activities or electronic surveillance in urban areas. In this case, the localization must be of high accuracy, on the order of 10 m, despite other constraints related, among others, to non-line-of-sight conditions and non-cooperation with other nearby mobiles or cellular base stations. A brief survey of RF-based localization techniques shows that none of them fully satisfy the desired specifications. A novel approach combining fingerprinting and polarization diversity is then described, its performance being assessed from on-site measurements.