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Re: Reply to: Re: [Paparazzi-devel] distance measurement for landing. (E


From: Dirk-Willem van Gulik
Subject: Re: Reply to: Re: [Paparazzi-devel] distance measurement for landing. (Electro-Technik)
Date: Sun, 22 Nov 2009 21:02:35 +0000

On 20 Nov 2009, at 19:37, Chris wrote:

> 5) A powerful ultrasonic range finder.

Give the 5 euro one from your local DIY shop a try - I found them to be quite 
accurate on a lot of surfaces.

> 6) A vision range finder either on the airplane or at the ground station.
> 6) a wire connected to a potentiometer which drags below the
>   aircraft  (say 50 cm lower) :-)

Or any camera solution with some form of parallax or similar distance/angle 
thing (make the LEDs flash and use a PLL ot filter out all other crap) or a 
meatball*.

Dw

* http://en.wikipedia.org/wiki/Optical_Landing_System



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