Earth’s geomagnetic noise fluctuations are on the order of nanoteslas (10^-9 T), which is 18 orders of magnitude above the signal they claim to have pulled out.

It’s below the thermal noise floor of any physical measurement system that obeys thermodynamics. You can’t engineer around it because it’s not an instrumentation problem. The signal is smaller than quantum noise limits at that scale. “AI” filtering doesn’t help when there’s no signal to filter. You can’t computationally recover energy that isn’t there.

This is certainly bullshit of the finest, most grassy and odorous caliber.

The photons arriving at the satellite from a ground target aren’t getting weaker due to distance in any way that defeats you, because the sun is illuminating the target and the NRO just needs to collect enough of the reflected photons.

SQUID sensors (the most sensitive magnetometers that exist) require magnetically shielded rooms to record cardiac signals at centimeter range.