In full auto missions, the WingtraOne can land with GPS-accuracy. For full auto missions, we recommend a landing radius of 5m. You can increase landing accuracy by switching to the Assisted Mode and land the drone manually.
The current version of our flight planning App WingtraPilot does not support automated terrain tracking. This feature will be integrated in coming releases. If you want to account for different elevations, you can plan multiple surveys with different flight altitudes and execute them in one flight.