Yes. You can add your own anchor to the session: https://developer.apple.com/documentation/arkit/arsession/2865612-add To instantiate your own anchor, you can call the anchor initializer with a 4x4 transform: https://developer.apple.com/documentation/arkit/aranchor/2867985-init . Elevation of the space ship in meters above the ground would be the 3rd element in the fourth column of the transform.
Topic:
Spatial Computing
SubTopic:
ARKit
Tags: