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I have a set of GPS Coordinates and I want to find the speed required for a UAV to travel between them. Doing this by calculating distance in x y z and then dividing by time to travel - m/s.

I know the great circle distance but I assume this will be incorrect since they are all relatively close together?

Is there an accurate way to do this?

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  • Define 'close' - hundreds of miles? meters? What, if any GIS software are you using / have access to? Is z a significant factor?
    – Chris W
    Commented Oct 23, 2014 at 23:05
  • Within 10m. I am not using GIS. Programming it myself as part of a matlab programme. I am thinking I can use a flat earth approximation.
    – Buzz92
    Commented Oct 27, 2014 at 16:14
  • possible duplicate of Distance between GPS coordinates
    – Chris W
    Commented Oct 27, 2014 at 20:19
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    Within 10m I'd just use Euclidean distance -- not because it's more accurate than great circle distance for small measurements, but because the math is simpler :)
    – Erica
    Commented Oct 28, 2014 at 0:35

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