Abidi, Mouine — Quantum Navigation

Inertial measurements are the backbone for any highly accurate trajectory determination by tracking and integrating accelerations and rotation rates in all three spatial directions. In principle, inertial navigation provides autonomy and is therefore particularly attractive in areas without a line of sight to satellites (e.g. in buildings, tunnels, or in space) as required by GNSS-based navigation solutions. Established inertial measurement units rely on classical sensors suffering from device-dependent drifts. For long-term stable solutions, they require a correction, usually provided by GPS (GNSS). This type of hybrid navigation fails wherever GPS is not reliably available, e.g. in buildings, underground, in tunnels but also in space applications.
Atomic inertial sensors are versatile tools to measure accelerations and rotation at high precision and long-term stability. These devices are typically operated with limited bandwidth, dead times in the measurement. Therefore, hybrid schemes with classical and quantum sensors can be exploited to combine the strengths of both systems.