Re: [Paparazzi-devel] RE: distance measurement for landing.

[Gareth Roberts]

Catches with the laser?  You'd probably need to lift an SBC
(gumstix/beagleboard), although you might get away with a CMUCam.  Not
sure of the range, especially in bright sunlight over non-reflective
surfaces, like grass.  The ham radio one looks more promising, but
difficult and heavy.  Incidentally, I looked at the laser range-finder
idea quite a while ago after I saw a documentary on the Dam Busters!
--G

On Thu, 2009-11-12 at 15:51 +0100, Sergey Lukin wrote:
> Hi guys,
> 
> I'm following this discussion for couple of days and I became curious,
> aren't there any already existing solutions to the hight measurement
> problem? I mean budget solutions.
> 
> I have found two interesting links:
> uwb
> http://lea.hamradio.si/~s53mv/radalt/radalt.html
> This one will definitely work (this guy made more than 100 safe
> landings), but requires a lot of knowledge in antena and high
> frequency devices design.
> 
> laser
> http://sites.google.com/site/todddanko/home/webcam_laser_ranger
> This seems to be much easier. What are the catches to it?
> 
> Do you have some more interesting links on this subject? Lets
> exchange.
> 
> Kind regards,
> 
> Sergey
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