marigolds6 t1_iwr64wn wrote
Reply to comment by MeanEYE in Researchers have developed an alternative positioning system that is more robust and accurate than GPS, especially in urban settings. The working prototype that demonstrated this new mobile network infrastructure achieved an accuracy of 10 centimeters. by the_phet
It's not that the military code is high precision and civilian is not. M-code is just there to provide a standalone alternative to civilian band that is more resistant to jamming.
Differential gps and WAAS provide sub-centimeter accuracy with civilian bands.
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