I highly doubt clouds would dense enough to block GPS signals, otherwise the US miltary would have been out of luck on cloudy days, "oh we can't go to war today, it's cloudy our sat nav won't tell us where to point missiles!"
Forgot to mention this, the GPS system is designed to a minimum number of satelites visible above the horizon at any time anywhere on earth, however this can be reduced by a number of things, trees, buildings and other dense things.
Shows you the current GPS cluster over head, although you might have to register to fix the earth location to view sats from.
The site is showing 6 sats that should be 'visible' to my location at present, my 8310 is only 'seeing' 4 or 5 depending where I stand outside. The other day the site said 14 sats were visible from my location. That's how the cookie crumbles at this stage, although with the Europeans doing their cluster of sats, the Russian cluster and the Chinese all doing like wise to some extent the future in terms of location based stuff is going to be very very interesting.
Last edited by delta_foxtrot2; 12-17-08 at 06:39 AM.
I was trying to get a GPS point inside a Hospital, but couldn't. Microwaves, concrete with rebar, not to mention all the RF from all those machines...
What does microwave (ovens?) have to do with it?
MW ovens operate at about 2.45Ghz, GPS is 1575.42 MHz...
However anything with density will absorb the signal, unless something is outputing on the exact freq as the GPS sats, they won't interfere with GPS at all... and since GPS also happens to be in GSM phones, they don't seem to adversely effect the signal either and they tend to splatter over everything at short range, even USB connections etc.
