GPS

[Chris]

Al Johnson wrote:
> It would be very easy to take the formulae from the spreadsheet in javascript. 
> Alternatively you can use it directly in the script if you glue in the calcs 
> in perl to calculate $posx, $posy and $posz as below. Variable $posacc is the 
> estimated accuracy of the supplied location in m.
>
>     ## WGS84 constants
Someone has already done this: 
http://www.oc.nps.edu/oc2902w/coord/llhxyz.htm