Clutter-Based Wireless Localization in Distributed Radar Networks with Repeaters

Current wireless localization schemes rely predominantly on line-of-sight approaches with time-of-flight, time-delay, or received-power processing of signals. A non line-of-sight method is essential to determine the position information of wireless nodes in environments where the direct signal path is obstructed, causing signal distortion. This paper addresses the problem of node localization using reflections from the surrounding clutter. We investigate how radar-based transceivers can position distributed repeater nodes by utilizing solely clutter reflections. The paper presents the theory behind our work, followed by modeling as well as simulation results, and the proposed technique is verified by building a 36-38 GHz test bed using three scatterers.