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Re: [Paparazzi-devel] Dgps tracking antenna

From: Chris Gough
Subject: Re: [Paparazzi-devel] Dgps tracking antenna
Date: Tue, 8 Dec 2009 11:16:53 +1100

I'm not sure I understand you correctly, are you suggesting a
compass-driven car-mounted north-tracking platform, and on top of that
a GPS-driven plane-tracking antenna (where the plane-tracking software
assumes it's mounted on a correctly oriented platform); a mechanical
solution to a simple arithmetic problem - why not mix the compass data
into plane-tracking antenna's software?

What sort of compass are you using?

Chris Gough

On Tue, Dec 8, 2009 at 10:46 AM, Jesus Martin Sanchez <address@hidden> wrote:
> Hello:
>   Just like I´ve done with Tood. I going to explain here my idea. Now I´m
> using a tracking antenna in my FPV/UAV plane, but some time I need to move
> the ground station, for example to search the plane or like this summer,
> owing to a "summer" storm :) when I had the plane some kilometers away...
>   Ok, based on the code of the tracking antenna, and with this
> maybe it´s possible to mix two
> code to do a diferential tracking antenna. But, as well Todd said to me The
> only issue I can see is that you will not be able to work out the current
> heading of the car with any reasonable accuracy. To solve this problem I´ve
> thought that with a magnetic  compass, with a servo (360º servo)  and a
> platform that always is pointing at the north… I think that would be the
> solution…  With that method you need some extra hardware, but I think that
> it´s the simplest way to do…
>  What do you think about this?
>  Thanks
>  Jesús
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