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I plan to control the flying height of my drone using a LIDAR (in real-time). Therefore, I would be attaching the LIDAR to my UAV, pointing vertically downwards. However, after looking at some of the LIDAR datasets, I see that there is a wreath of information. How do I extract the vertical height from here?

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    $\begingroup$ Where exactly is your problem? Do you want to take the roll and tilt of the copter into account? Can you assume a flat ground underneath the copter? $\endgroup$ – FooTheBar Nov 22 '19 at 9:01
  • $\begingroup$ No, I won't take roll and tilt into account as I am not looking for that level of precision. I am assuming a flat ground, for the reasons stated above. I understand that I'll have to careful in the presence of water, as the LIDAR will definitely get that wrong. $\endgroup$ – desert_ranger Nov 22 '19 at 16:52
  • $\begingroup$ then where is your problem? $\endgroup$ – FooTheBar Nov 22 '19 at 20:57
  • $\begingroup$ @FooTheBar, A standard LIDAR churns out 3D data. How do I isolate the z-axis from it? $\endgroup$ – desert_ranger Nov 22 '19 at 21:02
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    $\begingroup$ a standard Lidar gives you distance values for different directions. You only have to select the right beam. Which sensor are you using? $\endgroup$ – FooTheBar Nov 22 '19 at 21:30

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