[time-nuts] Re: LH "No usable sats"

[Poul-Henning Kamp]

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Lux, Jim writes:

> GPS orbit inclination is 55 degrees. If you plot the ground track, it 
> just touches 55N and 55S (i.e. there are times during the orbit when the 
> satellite is directly overhead the latitude = inclination), so you'd 
> have to be north (or south) of 55, to have an actual hole to the north.

I live at 55N and I very much have a "hole to the north":

	http://phk.freebsd.dk/raga/sneak/fig1.png

That also means I live in one of the two circles where the lattiude DOP
is worst on the entire planet :-/

North of this circle, one can pick up sats on the far side of
the hole.  South of it, the hole occupies a smaller angle of azimuth.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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