Quantum Ranging Enhanced TDoA Localization

TL;DR

This paper introduces a quantum-based TDoA localization method that leverages entangled quantum states to measure target-anchor distances more accurately, significantly outperforming classical localization techniques.

Contribution

It presents a novel quantum ranging approach that reduces measurement errors by estimating TDoA within a single measurement using entangled states.

Findings

Achieves over 50% average improvement in localization accuracy

Demonstrates the feasibility of quantum TDoA measurement in simulations

Outperforms classical algorithms in error reduction

Abstract

Localization is critical to numerous applications. The performance of classical localization protocols is limited by the specific form of distance information and suffer from considerable ranging errors. This paper foresees a new opportunity by utilizing the exceptional property of entangled quantum states to measure a linear combination of target-anchor distances. Specifically, we consider localization with quantum-based TDoA measurements. Classical TDoA ranging takes the difference of two separate measurements. Instead, quantum ranging allows TDoA estimation within a single measurement, thereby reducing the ranging errors. Numerical simulations demonstrate that the new quantum-based localization significantly outperforms conventional algorithms based on classical ranging, with over 50% gains on average.