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Learn about Locate3D, a novel peer-to-peer node localization system for large networks in this 14-minute conference talk from NSDI '25. Discover how this innovative approach combines Ultra-Wideband (UWB) technology with angle-of-arrival (AoA) data to overcome limitations of traditional range-only localization methods. Explore the system's three key innovations: using angles to reduce measurement requirements by 4×, jointly leveraging range and angle data for enhanced location estimation, and implementing a spanning-tree approach for rapid location updates. Understand how Locate3D ensures output graphs remain rigid and uniquely realizable even in challenging environments with occlusion or weak connectivity. Examine the system's impressive performance metrics, including 75% latency reduction while maintaining accuracy, 0.86 meter median localization error for building-scale multi-floor networks with 32 nodes and zero anchors, and 12.09 meter accuracy for large-scale deployments with 100,000 nodes. Gain insights into applications spanning first-responder navigation, automated manufacturing, vehicular and drone systems, asset tracking, IoT networks, and 5G communications from researchers at University of Maryland, Nokia Bell Labs, and Georgia Institute of Technology.
