No, the US one is basically error(like noise) injection and has been disabled: https://www.gps.gov/systems/gps/modernization/sa/ https://www.gps.gov/systems/gps

No, the US one is basically error(like noise) injection and has been disabled: https://www.gps.gov/systems/gps/modernization/sa/ https://www.gps.gov/systems/gps/modernization/sa/ The Chinese one is effectively a warped coordinate system, see GCJ02: https://en.m.wikipedia.org/wiki/Restrictions_on_geographic_data_in_China https://en.m.wikipedia.org/wiki/Restrictions_on_geographic_d...