What are my options?
9/28/2005 9:58:24 PM
9/28/2005 10:01:35 PM
hahaha
9/28/2005 10:02:44 PM
they need a clear LOS to work properly
9/28/2005 10:06:53 PM
you have no options. unless you have a fellow follow you on the surface with a gps device, but you'd have to figure out a reliable way for him to stand directly above you the whole time.
9/28/2005 10:08:36 PM
why do you need to use a GPS underground?
9/28/2005 10:16:30 PM
not going to work unless there's a gps receiever above you like said above... it could be possible (with some sort of hardware) to have an RF transmitter on yourself that communicates w/ said gps above ground (in LOS) and updates those coordinates with yours considering the displacement. not gonna happen though.
9/28/2005 10:57:29 PM
You can get GPSes with inertial sensors. They are $texas though.Alternatively, you might could rig up a Powerbook's motion sensors for rough estimates...
9/29/2005 12:37:15 AM
a powerbook would make for the worlds most expensive, slow , gps unit. (would be really pretty looking though)
9/29/2005 1:22:55 AM
I couldn't find a lot of pricelists, but GPS systems with inertial units can be well over $1000. Considering how fairly simple they are, I would guess there are cheaper ones, but I have no knowledge of any.
9/29/2005 1:29:06 AM