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 LK8000 International Support
 Change requests and new features list
 Windspeed, using only GPS (OBSOLETE)
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lshachar
Pulcino

Israel
12 Posts

Posted - 13/08/2017 :  23:00:12  Show Profile  Reply with Quote
Hey,
I really like the wind speed & direction calculation described at the attached link.
Have a look, it's quite an old thread so this idea might have already been discussed around here, but I couldn't find any mentions. What do you think about it?

http://blueflyvario.blogspot.co.il/2012/09/calculating-wind-speed-from-gps-track.html

Edited by - AlphaLima on 04/10/2018 20:04:43

davesalmon
Pterodattilo

United Kingdom
1459 Posts

Posted - 06/02/2018 :  09:41:44  Show Profile  Reply with Quote
Just noticed this. It looks very similar to the TrueWind feature that has been in LK8000 for many years. You fly at a pre-determined speed, for a pre-determined time, in a pre-determined direction, and you get wind speed and direction. It's all in the manual.
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lshachar
Pulcino

Israel
12 Posts

Posted - 29/08/2018 :  14:21:03  Show Profile  Reply with Quote
quote:
Originally posted by davesalmon

Just noticed this. It looks very similar to the TrueWind feature that has been in LK8000 for many years.


actually, the feature you are referring to is completely different to what is talked about in the link I posted...
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AlphaLima
Moderator

Germany
1543 Posts

Posted - 04/10/2018 :  19:53:32  Show Profile  Visit AlphaLima's Homepage  Reply with Quote
We already have a quite good wind estimation(circle shifts) based on GPS only.
For much better results we have a modified Kalman filter but this needs GPS and indicated airspeed (IAS).
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AlphaLima
Moderator

Germany
1543 Posts

Posted - 04/10/2018 :  20:04:06  Show Profile  Visit AlphaLima's Homepage  Reply with Quote
Please don't get me wrong but a better wind estimation need additional informations.
Implementing and testing another algorithm is a hell lot of work. Especially to make it robust even on different types of aircrafts (Hang, Para, Glider, GA). All need different parameters which need to be evaluated and tested seperatly.
(For me peronally it is better to have no wind rather than a wrong estimation)
We have tons of other things to improve, so we should not lose time on another "imperfect" wind estimation. If the bluefly varios have wind estimations based on this algorithem, it is already possible to send and use it in LK8000.


Edited by - AlphaLima on 10/10/2018 15:32:43
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