IIRC exactly this was the basis of removing selective availability on GPS signals for civilian use. The original GPS spec had two bands / channels / something:

IIRC exactly this was the basis of removing selective availability on GPS signals for civilian use. The original GPS spec had two bands / channels / something: one that was encrypted, for military use, and a "fuzzy" version for civilians that would vary ±100 meters in accuracy. Once inertial guidance for missiles became more accurate than ±100 meters, there wasn't a point to reducing the civilian accuracy anymore, so they disabled SA in 2000 and went all-in on availability in 2007. https://www.gps.gov/systems/gps/modernization/sa/ https://www.gps.gov/systems/gps/modernization/sa/