On: America's 'Gold Standard' GPS Risks Falling Behind...

[dilyevsky]

In 2014 they started broadcasting L2C signal which improved civilian precision to basically military level[0]

There is also preproduction L5 now which gives you cm level precision

[0] - https://www.gps.gov/systems/gps/modernization/civilsignals/#...

[londons_explore → dilyevsky]

Notable that the military encrypted code was also usable by civilians if you were happy to do 'codeless decoding'. Basically, you might not be able to decrypt the signal but it still contains useful timing information.