GPS issue final state?

Michael Shiloh michael at
Sat Aug 2 08:37:57 CEST 2008

Russell Sears wrote:
> Michael Shiloh wrote:
>> Any advice appreciated.
> I've been tricked a few times by what I think was lucky satellite 
> positions (30-120 sec ttff one day, 20 minutes the next).
> I don't know how long it typically takes the satellites to move from 
> "lucky" to "unlucky", but that probably should be taken into account. 
> Also, what about urban environments w/ more reflections, etc.  Should 
> people report terrain type?

Terrain type should be included. I'm thinking we need a wiki page. Does 
one already exist? It should have a column for terrain.

How to avoid being tricked by "lucky satellite positions"? I guess one 
way would be to run the test multiple times. How many times? How long 
apart? Perhaps, as you did, twice, one day apart?


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