View Full Version : GPS Signal

02-09-2007, 10:18 AM
I wanted to know why the GPS module cannot pick up a signal from inside a building?

Martin Hebel
02-09-2007, 10:27 AM
Because the satellite signal is not strong enough to penetrate it sufficiently for the receiver to acquire it. It has problems with heavy foliage as well.


StampPlot - GUI and Plotting, and XBee Wireless Adapters (http://www.selmaware.com/)
Southern Illinois University Carbondale, Electronic Systems Technologies (http://www.siu.edu/~isat/est)

02-09-2007, 09:25 PM
Some of the better GPS will pickup inside signals and there is a mention in one of the forum threads of a person who did get there GPS from Parallax to work inside by a window.

But Martin is right, getting a GPS signal inside is something you should consider non-existant.

02-10-2007, 12:29 AM
Short answer - you're GPS needs a clear line of sight to the sky to work. It can work thru a window, car windshield, sunroof, etc.