[time-nuts] Loran in the US
Poul-Henning Kamp
phk at phk.freebsd.dk
Fri Mar 9 08:16:10 UTC 2012
In message <9D1DABC0-AE63-4FB5-AD7D-D8C42F9FDE06 at gmail.com>, Dennis Ferguson wr
ites:
>> If so, frequency stability is priority number one and time is
>> probably just "better than 100msec" or so
>
>I could swear I saw something that said "50 ns", though I can
You can _almost_ do that with loran, if you know your l/l coords.
>indicates they aren't just looking at Loran by itself. The
>MF dGPS bands and 500 kHz are also included in whatever they
>are doing.
Which indicates to me that they are pretty damn serious, and not
just catering to some recently discovered VIP Loran-C users.
I'd be very surprised if LightSquared nuking GPS reliability doesn't
have something to do with this.
--
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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