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