dcm2quat - Convert direction cosine matrix to quaternion
Syntax
q = dcm2quat(n)
Description
q = dcm2quat(n) calculates
the quaternion, q, for a given direction cosine
matrix, n. Input n is a 3-by-3-by-m matrix
of orthogonal direction cosine matrices. The direction cosine matrix
performs the coordinate transformation of a vector in inertial axes
to a vector in body axes. q returns an m-by-4
matrix containing m quaternions. q has
its scalar number as the first column.
Examples
Determine the quaternion from direction cosine matrix:
dcm = [0 1 0; 1 0 0; 0 0 1];
q = dcm2quat(dcm)
q =
0.7071 0 0 0Determine the quaternions from multiple direction cosine matrices:
dcm = [ 0 1 0; 1 0 0; 0 0 1];
dcm(:,:,2) = [ 0.4330 0.2500 -0.8660; ...
0.1768 0.9186 0.3536; ...
0.8839 -0.3062 0.3536];
q = dcm2quat(dcm)
q =
0.7071 0 0 0
0.8224 0.2006 0.5320 0.0223See Also
angle2dcm, dcm2angle, angle2quat, quat2dcm, quat2angle
 | dcm2latlon | | dcmbody2wind |  |
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