Emitter Localization and Visualization (ELVIS): A Backward Ray Tracing Algorithm for Locating Emitters

— We present ELVIS, a new approach for localizing a first responder (e.g., firefighter) inside a building. We assume that the first responder emits RF energy, which undergoes multiple reflections with the walls, ceilings and floors of the building. There are K receivers, each of which receives ray(s) from the first responder. Each receiver estimates the AOA (Angle of Arrival), TOA (Time of Arrival) and power of each ray. We assume that the receivers know the blueprint of the building and the electromagnetic characteristics of the construction material used in the building. We show that, based on this information, the receivers can localize the first responder to a high degree of accuracy by applying ELVIS, which is based on backward ray tracing. We have evaluated the performance of ELVIS, using both single and multiple receivers, under a variety of channel and propagation conditions. We find that, the location prediction error depends mostly on the angular resolution of the ...

• Type: Conference
• Year: 2007
• Where: CISS
• Authors: Aliye Özge Kaya, Larry J. Greenstein, Dmitry Chizhik, Reinaldo A. Valenzuela, Nader Moayeri
• Keywords: CISS 2007, Multiple Receivers, Responder Emits Rf, first Responder