The article implies that this new one uses an IR image rather than just IR point sources, so can detect the shape of the aircraft among a cloud of decoy flares.
Pretty simple and probably quite effective if true.
Pretty simple and probably quite effective if true.
https://en.wikipedia.org/wiki/Flare_(countermeasure)
> The newest generation of the FIM-92 Stinger uses a dual IR and UV seeker head, which allows for a redundant tracking solution, effectively negating the effectiveness of modern decoy flares (according to the U.S. Department of Defense).
This stuff is a constant back-and-forth of tech improvements.