Distance measured on incline by GPS
![Post Post](./styles/prosilver/imageset/icon_post_target.gif)
A question was asked by a friend the other day regarding what a GPS measures distance wise.
My assumption is that it triangulates distance traveled on the earths surface by using horizontal distance and altitude change.
Is this correct?
A small doubt arises in my mind from looking at my track profiles in Mapsource.
The scale at the bottom of this view appears linear (not variable) and appears to be horizontal distance only.
This would mean I'm walking a lot further on hills than I think I am if this is the case
and no wonder I get tired legs ![Very Happy :D](./images/smilies/icon_biggrin.gif)
My assumption is that it triangulates distance traveled on the earths surface by using horizontal distance and altitude change.
Is this correct?
A small doubt arises in my mind from looking at my track profiles in Mapsource.
The scale at the bottom of this view appears linear (not variable) and appears to be horizontal distance only.
This would mean I'm walking a lot further on hills than I think I am if this is the case
![Shocked :shock:](./images/smilies/icon_eek.gif)
![Very Happy :D](./images/smilies/icon_biggrin.gif)