Data Sheet
Step 1.3: Reaching good “Z” axis
- To have good Z tracking, remember to fly always either significantly below the plane of stationary beacons and significantly above the plane. 
Otherwise, Z precision will suffer. Rule of thumb, the angle between the mobile beacon and the plane of stationary beacons must not be less than 15-
20 degrees: https://www.youtube.com/watch?v=19lUp-ADD3Y&t
6










