Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: Y2K [OFFTOPIC] | Date | 25 Jun 1998 18:29:08 GMT |
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Followup to: <Pine.LNX.3.95.980625124630.241A-100000@chaos.analogic.com> By author: "Richard B. Johnson" <root@chaos.analogic.com> In newsgroup: linux.dev.kernel > > It's called Poynting-vector compensation. The GPS satellite orbits form > the outer surface of a sphere, with the center of the earth at its center. > If you could read the GPS time from the center of the earth, they would > all be identical. The actual wall-clock time of the satellites is not > important although it's maintained within a few microseconds of whatever > NIST says it should be. It's the difference between carrier > phase/frequency and time/position that makes GPS work. We don't care > who's clock is used. >
Unless, of course, you're using GPS to obtain wall clock time...
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