On Tuesday, October 20, 2015 at 8:12:13 AM UTC-7, krasw wrote:
I recently found some interesting articles concerning AIR Glide S and it's inertial platform in particular. Enjoy:

http://www.how2soar.de/index.php/584...ut-frustration

http://www.how2soar.de/images/H2S_me...sch%20V2.1.pdf

http://www.asl.ethz.ch/people/lestef...l/icra2012.pdf

Latter one has some heavy math in it, but worth reading anyway (incl. references for further study). They measured AIR Glide ISU accuracy with GPS signal switched off. Position error was 600 meter after 30 mins flight. Not bad.

Regarding the description of wind accuracy in the first link: This was my impression also: that the instantaneous wind indication could not be accurate, as it was so dynamic. However after two years of use I have come to believe it is accurate, and the wind field really is that dynamic, you just had no way to measure it before. This instrument is really in a class of its own.