Under the new initiative, with the acronym ICEMAN, DARPA is seeking a contractor to measure the electromagnetic fields inside cockpits, especially signals between 9 kHz and 1 GHz and then determine whether they might affect the performance of pilots. ICEMAN is short for Impact of Cockpit Electro-Magnetics on Aircrew Neurology.
In its request for proposals, DARPA states that, “Current cockpits are flooded with RF noise from on-board emissions, communication links, and navigation electronics, including strong EM fields from audio headsets and helmet tracking technologies.” The agency notes that current tactical audio headsets project magnetic fields that are up to 10 times the strength of the Earth’s magnetic field —that is, approximately 5 G (0.5 mT). DARPA continues:
“Recent DARPA-funded research has demonstrated that human brains sense magnetic fields, like those used by animals for navigation, and that this process is ‘jammed’ (i.e., disrupted) by radio waves (RF), impacting brainwaves and behavior. Furthermore, recent findings were the first to show that even weak RF fields and ‘Earth strength’ magnetic fields have measurable, reproducible effects on human brainwaves and unconscious behavior in a controlled environment.”
The “recent research” refers to work carried out under DARPA’s RadioBio program, announced in 2017. One of its objectives was to see whether living cells can communicate with neighboring cells using EM signals and, if so, what the cells are telling each other and how they do it. Joe Kirschvink at Caltech, a RadioBio contractor, has reported that human brain waves respond to changes in magnetic fields on the order of the Earth's field.