Re: [Paparazzi-devel] (no subject)

[antoine . drouin]

Quoting address@hidden:

>it should be possible to migrate from measuring the sky temperature to
>measuring the sky polarisation. (if there is a difference at all).
>
>http://www.araa.asn.au/acra/acra2001/Papers/Usher.pdf
>http://www.uni-tuebingen.de/cog/personpages/schmolke/gwalPaper.pdf

Thanks, I will read this with care. it seems an interesting
alternative/complement to magnetic sensing.

> In addition, the integral temperature of the
> sky and earth can be used to estimate the altitude of the model.
> The termopile have probably a 30-40 degree sensitive angle.
> More higher the model fly, the sensor register more sky and minor earth.
> This all assuming no montains.

That is a clever idea. we should try to make a 4 way sensor, do the difference
by software and see how altitude relates to absolute measurment.

Take care

Antoine