Thanks a lot for the hint! Can you perhaps detail a bit on the second part - how would I use GPS to handle the drift (also, if you knew a document accessible on the web describing this, that would be extremely helpful!)?
Regarding the first point, is it correct that "continuous" integration uses the following equation: v(t1) = v(t0) + A * dt? But then, how do I combine the measures for the 3 axes - I found a formula that takes the square root of all three values squared, would that be correct? Thanks in advance, Sigrid Am 03.11.2010 um 00:18 schrieb Patrick Li: > I think the most accurate thing you can probably do is integrate the > accelerometer data to get velocity, and use the GPS data to handle the > accumulating numerical drift. My friend used that approach for this thesis > project for good results. > -Patrick > > On Tue, Nov 2, 2010 at 5:27 PM, keyd...@gmx.de <keyd...@gmx.de> wrote: > Thanks Noel - the scale would be meters rather, but I somehow assumed that > this might be too small-scale for GPS ... > > I guess I really ought to compare both measures, but for the GPS part, I > wonder what would be the most "architecturally adequate" way to adapt > 'world-updater' s contract to handle the additional geolocation field (and > the other fields currently unused, possibly). > > ciao, > Sigrid > > > > Am 02.11.2010 um 22:08 schrieb Noel Welsh: > > > I don't /really/ know, but isn't one reading from the accelerometer > > and the other from GPS? The answer depends, I think, on the distance > > over which you want to operate. If you want velocity from, e.g., hand > > movements, the accelerometer is the way to go. If you want velocity > > over large scale (metres, kms) use GPS. > > > > HTH, > > N. > > > > On Tue, Nov 2, 2010 at 5:52 PM, keyd...@gmx.de <keyd...@gmx.de> wrote: > >> > >> Hi, > >> I am wondering how best to calculate velocity in a moby/phonegap/android > >> application. > >> In general, would anyone have experience (or intuition) whether velocity > >> might better be calculated from the acceleration values delivered by > >> phonegap's Acceleration object, or directly be extracted from the Position > >> object returned from Geolocation (it has a field 'velocity')? > > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users >
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