This sounds very similar to the method discussed in this podcast to detect rocket launches: https://www.armscontrolwonk.com/archive/1216884/detecting-missile-la

This sounds very similar to the method discussed in this podcast to detect rocket launches: https://www.armscontrolwonk.com/archive/1216884/detecting-missile-launches-with-ionospheric-disturbances/ https://www.armscontrolwonk.com/archive/1216884/detecting-mi...