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Date:      Sat, 06 May 2000 18:08:30 +0200
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        nate@yogotech.com (Nate Williams)
Cc:        Warner Losh <imp@village.org>, Wes Peters <wes@softweyr.com>, hackers@FreeBSD.ORG
Subject:   Re: GPS heads up 
Message-ID:  <9040.957629310@critter.freebsd.dk>
In-Reply-To: Your message of "Sat, 06 May 2000 10:03:29 MDT." <200005061603.KAA17604@nomad.yogotech.com> 

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In message <200005061603.KAA17604@nomad.yogotech.com>, Nate Williams writes:

>I disagree.  I routineles pick up 10-11 satellites, and I'm about
>half-way between the pole and the equator.   Heck, I just looked, and
>I've got 8 locked on right now.

Right, 8 is the norm.  When you have 10 or 11 a couple or four of them
are so low on the horizon that they hardly matter.

>> Here where I live (56 north) about 30% of the sky is never covered by
>> a satelite because of the inclination of the satelites being non-zero.
>
>Wow, the worst I've *ever* seen was 4 satellites here, but it may be
>that the GPS satellites have orbits that prefer the US?

Not really, but they don't bother going over the poles.  Plot the orbits
based on the almanac and you can see the pattern.

--
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD coreteam member | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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