Networks and Systems Security Lab

High-precision Localization

Accurate localization is foundational to the autonomy, safety, and reliability of modern cyber-physical systems—especially in GPS-denied environments such as indoor spaces, urban canyons, and critical infrastructure zones. From drones and autonomous vehicles to asset tracking and smart manufacturing, the need for robust, high-precision, three-dimensional localization systems is more pressing than ever.

Our research group focuses on next-generation localization frameworks that push the boundaries of accuracy, reliability, and adaptability in challenging environments. We design and evaluate novel positioning systems that operate without GPS, leveraging technologies such as ultrasonic acoustic ranging, Wi-Fi and 5G multi-RAT integration, reconfigurable intelligent surfaces (RIS), and optimized beacon placement. A core theme of our work is mitigating the twin challenges of multipath interference and geometric-induced error—two primary sources of inaccuracy in indoor localization.

We develop algorithms and systems that not only achieve centimeter-level or sub-meter accuracy but also operate robustly in real-world conditions, including areas with poor signal quality or structural interference. Our work systematically explores how the geometry and placement of anchors and beacons influence localization performance and develops optimization algorithms to reduce error, especially in the Z-axis, which is often the most challenging.

Beyond achieving high-accuracy estimates, our research also addresses scalability, real-time operation, and integration with communication infrastructure, making our solutions viable for 5G-enabled drone navigation, autonomous robotics, and intelligent transportation systems. Our contributions have advanced the state of the art in sensor fusion, anchor optimization, and indoor localization architecture, influencing both academic approaches and industrial deployment strategies.

Through rigorous experimentation, simulation, and real-world deployment, we contribute to a deeper understanding of the trade-offs and capabilities of GPS-free localization systems, helping pave the way toward truly autonomous systems that can navigate seamlessly across environments.

Related Publications