Stewardship, the Concept

摘要

Measure the intrinsic importance of GPS to both national and global infrastructures by this gauge: after a year or more of careful planning, it will take a further 12 years to wean a community of more than 300,000 professional, industrial users from a technology that was never intended in the first place. Not designed-in, nor ever officially announced, sanctioned, or promulgated. That's the state of affairs for real-time kinematic GPS, dual-frequency as we know it today, semi-codeless or carrier-phase use of the highly precise military P(Y) code on L1 and L2.