djiuser_6Q57jczySsAE
lvl.4
Flight distance : 623366 ft
United States
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Its downward vision and sonar sensors have limited range, so the drone itself isn't well equipped to report its AGL. It knows its location within a few meters, including height, via GPS. So what are the global data sets the provide ground elevation for a specific location? SRTM is probably the best public dataset. SRTM resolution is about 30m^2. Probably not useful in steep terrain. Google's elevation data is much better where I live (bloomington Indiana). I assume google's images (local to me) are captured via aircraft equipped with cameras and LIDAR, and/or they use photogrammetry for height.
Seems doable, but accuracy would vary. Not high on my list of features. |
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