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Re: Reply to: Re: [Paparazzi-devel] distance measurement for landing. (E
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From: |
Dirk-Willem van Gulik |
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Subject: |
Re: Reply to: Re: [Paparazzi-devel] distance measurement for landing. (Electro-Technik) |
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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