Well, To complement Thib's angle, I have only experience and know nothing about the theory. :-)
What I have noticed with my GPS (Forerunner 305) is that it gets the altitude wrong if the terrain is steep. That is, if rock blocks more than a certain % of the sky. Not sure about the exact percentage, I guess it will depend on the number of satellites the receiver can see in the unobstructed parts. Positioning seems a lot more robust than altitude with the Forerunner too. Jostein 2008/8/22 Thibouille <[EMAIL PROTECTED]>: > I have no experience at all with the use of any GPS. > However, I recently had to look at the theory and how it works... My > memory faded a bit but I remember clearly that altitude was indeed a > problem and *can* be quite different mesured by the GPS or the 'good' > one written on the maps. > > I shall dig a bit and find why exactly... > > -- > Thibault Massart aka Thibouille > ---------------------- > Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... > Thinkpad: X23+UB,X60+UB > Programing: D7 user (trying out D2007) > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- http://www.alunfoto.no/galleri/ http://alunfoto.blogspot.com -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
