Hilton wrote:
Hi,

I know GPS works in bad weather, but...

When would a GPS lose a signal due to weather? i.e. do certain clouds (or
huge ones) make a GPS signal go bad? Does rain? If so, how much? What
about snow? If I was in a hurricane, would I lose the signal? Lightning?
I swear overcast cuts down on my GPS signal, but others say it can't happen.

What other things can make GPS signals go bad?
Hopefully you aren't flying beneath tree level, but I do a lot of
geocaching. Pine trees with long, conducting needles can really shut
out the signal. Because they are evergreens, the effect happens in
winter as well.

Any good research papers out
there? I'm sure there must be now that we're going to GPS approaches.
I'll bet you can find some good info on www.af.mil -- doc center or the
like. Because there is a new GPS system being designed, there should be
some good papers. Find out who the contractor is and approach them.

Speaking of hurricanes, would it be possible to take off in the eye in a 172
and fly along with it for hours in the eye?
Only if I completely lose my mind. Phsyically, probably you can, but
not me.

Hilton