The 3 angles
x about new axes (intrinsic) in the order z-y-x are
found from the rotation matrix
R_AB. The angles (called Euler angles or
Tait–Bryan angles) are defined by the following procedure of successive rotations:
Given two arbitrary coordinate frames A and B, consider a temporary frame T that initially coincides with A. In order to make T align with B, we first rotate T an angle z about its z-axis (common axis for both A and T).
Secondly, T is rotated an angle y about the NEW y-axis of T. Finally, T is rotated an angle x about its NEWEST x-axis.
The final orientation of T now coincides with the orientation of B.
The signs of the angles are given by the directions of the axes and the right hand rule.
a 3x3 rotation matrix (direction cosine matrix) such that the relation between a vector v decomposed in A and B is given by: v_A = R_AB * v_B
Note that if A is a north-east-down frame and B is a body frame, we have that z=yaw, y=pitch and x=roll.
z,y,x angles of rotation about new axes (rad)
Kenneth Gade A Nonsingular Horizontal Position Representation. The Journal of Navigation, Volume 63, Issue 03, pp 395-417, July 2010.
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