The article does a poor job explaining, but seems to imply that they are working on replacing GPS altogether with a local system that relies on an atomic clock

The article does a poor job explaining, but seems to imply that they are working on replacing GPS altogether with a local system that relies on an atomic clock and quantum engineering. From what I can find, there are many approaches to this, including quantum gravimetry, quantum accelerometers, etc. https://en.wikipedia.org/wiki/Quantum_sensor https://en.wikipedia.org/wiki/Quantum_sensor