Abstract: This paper introduces a reconstruction method of spatial drone position and posture to meet the requirement of object tracking in an augment reality (AR) system.Based on the point and line reconstruction methods, the position relationship between the spatial vector and its projection onto any plane is analyzed. Methods for reconstruction of spatial vectors in the world coordinate system and the image coordinate system are derived and used in the 3D reconstruction of spatial drone position and posture.Verification of the technique is presented.

Key words: augment reality, drone tracking, 3D reconstruction