[RE-wrenches] GPS units

[jay peltz]

Hi William,

What sort of accuracy are you needing?

jay

peltz power





On Jan 27, 2009, at 1:34 PM, William Miller wrote:

> Does anyone have a foolproof tool to measure elevation?  I have  
> researched GPS units recently.  They are notoriously inaccurate for  
> elevation:
>
> http://wiki.motionbased.com/mb/GPS_Unit_Elevation
>
> Here are few more links with GPS fundamentals:
>
> http://www.adventurenetwork.com/cgi-bin/adventurenetwork/GPS_101.html
> http://www.gpsreview.net/electronic-compass/
>
> I have a Suunto Observer watch with an altimeter.  I think I can get  
> relatively accurate measurements of DIFFERENCE in elevation if I  
> measure the two elevations in quick succession.  I will be trying it.
>
>
>
> William
>
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