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This thread is privately moderated by Jack Crossfire, who may elect to delete unwanted replies.
May 30, 2008, 02:16 PM
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Death of a neural network

U can throw away your barometers, pitot tubes, washout filters, neural networks, sonar & Kalman filters. Just buy a uBlox 5.

Turned off the neural network and got solid hovering in the wind using straight PID feedback. Very fast response to wind gusts. There's no lag on any axis & it's dead accurate.

They're either using carrier phase smoothing or throwing a genetic algorithm at the CA codes. It really was just a matter of waiting for it to get cheaper.

All the missions have been navigation model 6. Altitude in ground effect is still very unstable. Above ground effect it's the most stable we've had. Still has vortex ring state & ballooning in the right conditions.

Sadly, we've probably seen the end of neural networks for navigation & 590 of our 600 Mhz are now wasted. There's still a neural network for cyclic, but with this level of navigation it's not necessary. Aside from autonomous takeoff & landing, the uBlox didn't leave many problems to solve.

VicaCopter under uBlox5 control (2 min 40 sec)
Last edited by Jack Crossfire; May 30, 2008 at 03:15 PM.
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May 30, 2008, 11:12 PM
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Very Encouraging

This is good news.....Very Cool. Thanks for the info.


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