On Friday 01 August 2008, Vinc Duran wrote: > On Thu, Jul 31, 2008 at 5:28 PM, Andreas Bogk <[EMAIL PROTECTED]> wrote: > > <snip> > > I'm not a mathematician, but I think I have sufficiently understood > > Kalman filters and dead reckoning. A little known trick is to use > > ordinary integration with the strap-down equation given the > > accelerometer and gyro input, and have the Kalman filter model the error > > terms instead of the physical model state space. This way, you only > > have to update the Kalman filter every time you get a GPS fix, not every > > time you get a measurement from the other sensors. > > > > But... what are our chances GTA03 will have a 3D gyro? > > > > Andreas > > Andreas, > Could the accelerometers be substituted for a 3d gyro?
We only need to replace 1 of the 2 3D accels with a 3D gyro. I've not looked at the size or cost of solid state gyros so I don't know how practical that might be. _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
