Michael, On 14/09/11 17:05, Michael Perrett wrote:
The user, mostly military or marine, would choose the datum he/she wanted to use. This would match up the local map with the GPS derived position. The difference could be quite large (hundreds of feet), especially important in the Z (vertical) direction!
In GPS, the Z axis is not the vertical axis... X, Y and Z is the receivers position in meters according to GPS/WGS84 which is then translated into long, lat and height.
Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
