Pozyx Z-Axis ranging is inaccurate and uses different algorythm then X- & Y-axis (Drone)

[SanderLeliveldGH]

I called Pozyx and they said they know how to fix the Z-axis Arduino code accuracy. The current ranging results in Toilet Bowiling Effect with Pozyx as primairy source for altitude. So I'm using the Barometer as primairy source for that now, which still results in little inaccuracies. For example my barometer keeps measuring the wrong heigths and keeps incrementing while its still on the ground.

I contacted Pozyx and they told me to visit them in Belgium. I would love too, but I can't as my internship is about to expire and it will be time for the next guy to take over the project. Now I would like to ask them to commit those changes here on the Github. So others can make use of this.

I'm referring to this code as main code for the dronecode IndoorLoiter by Randy MacKay and using the Pozyx library aside.

They had a working drone on their website, where they advertised with. Now I'm asking them to share this code and parameters with us. Also would like to receive some documentation about their setup, like what hardware they used. I heard they used a laserranging sensor for the height accuracy, which one did they use?