[time-nuts] LORAN C shutdown

bg at lysator.liu.se bg at lysator.liu.se
Tue Nov 10 19:29:33 UTC 2009


On the other hand... With GPS-aiding its argued that high performance
INS-systems are not needed. The same performance will be reached with a
low cost GPS and a mid to low performance inertial system. So I doubt we
will have low cost high performance intertial sensors anytime soon.

--

   Björn

> Don't overlook that laser/fiber "ring-gyros" will drop in price the
> patents expire and the predatory pricing ends:
>
> 	http://www.es.northropgrumman.com/solutions/mk39/assets/mk39.pdf
>
> As much as I have enjoyed playing with Loran-C, I would far rather
> have a shoebox-sized, totally autonomous dead-reckoning backup, with
> no lightning-prone antenna, than a Loran-C receiver.
>
> Doesn't help us timing guys, but we have Cesiums if we are really
> serious.
>
> --
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by
> incompetence.
>
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