> They require a shielded room to increase the SNR.
Not anymore. That is exactly the purpose of Darpa Ambient program: https://www.darpa.mil/research/programs/atomic-magnetometer-...
Demo from 2022: https://www.youtube.com/watch?v=VTnIXWCBYTw
AMBIIENT’s goal was biological imaging.. sensors near a body for medical/neuroscience applications. The range being discussed is still on the order of meters at best, not miles.
AMBIIENT’s goal was biological imaging.. sensors near a body for medical/neuroscience applications. The range being discussed is still on the order of meters at best, not miles.