Re: [LEAPSECS] trading time

From: Steve Allen <>
Date: Tue, 23 Dec 2003 11:46:04 -0800

On Tue 2003-12-23T09:56:16 -0800, Tom Van Baak hath writ:
> Could someone explain why this factoid has any
> bearing on the issue? I've seen this presented
> before and it makes no sense to me. GPS also
> "operates" on TAI: as I'm sure you all know, by
> definition, GPS internal time is TAI - 19 s.
> Or put it another way, can you think of a single
> application where GPS cannot already deliver
> the same TAI as Galileo will someday deliver?

Golly, Tom, it's on your own web page

At the whim of the commander in chief, GPS can turn on Selective
Availability and screw the entire world of navigational and
timekeeping users.

Galileo will derive revenue from subscribers who are paying to
obtain a guaranteed level of accuracy and reliability.

Of course no agreement can stop some entity from flying a jamming
rig for both systems over particular theatres of interest.

Steve Allen          UCO/Lick Observatory       Santa Cruz, CA 95064      Voice: +1 831 459 3046
PGP: 1024/E46978C5   F6 78 D1 10 62 94 8F 2E    49 89 0E FE 26 B4 14 93
Received on Tue Dec 23 2003 - 11:46:19 PST

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