30th Anniversary of First Block II GPS Satellite Launched Into Orbit
On the matter of the development of phase measurement, I always appreciated the work of Charles Counselman III and recommend the following short articles.
I sort of miss the days when the technology was developing and not so much of a “black box.” Wasn’t it Asimov who said “Any sufficiently advanced technology is indistinguishable from magic?” Too lazy to look it up.
The magic quote was Clarke, but I don't recall that he had 3 laws. Are you thinking of Asimovs 3 laws of robotics?
Thanks for the correction. I envy Bill C’s acquaintance with one of the greats. I have known some really smart people and found most to be on the nice side. Some revealed themselves to be so only after closer acquaintance.
I ran across an early 90’s presentation ( https://www.slideshare.net/mobile/dr.geophysics/map-projections-datums-gis-and-gps-for-everyone ) that I am pretty sure originated at the NGS. It includes the following slide:
Happy Anniversary. My profile picture is from 1990.