Policy: Expert Review
Authority: CCSDS.MOIMS.NAV
OID: 1.3.112.4.X.8
References:
" " | Details | Status | Value | Description and Reference | Nomenclature | isDefault Units/Type | OID |
---|---|---|---|---|---|---|---|
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Quaternion | The first three elements form the vector part of the quaternion, the fourth is the scalar element. Defined as:![]() where e1, e2, e3 are the three elements of the Euler rotation axis (unit vector) and phi is the Euler rotation angle. The quaternion represents the coordinate transformation from frame A to frame B. |
Q=[Q1,Q2,Q3,QC] | N/A, N/A, N/A, N/A | 1.3.112.4.X.8.1 | |
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Quaternion Derivative | Rate of change of the quaternion. | ![]() |
1/s | 1.3.112.4.X.8.2 | |
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Angular Velocity | The rotational rate of frame B with respect to frame A. The vector direction is the instantaneous axis of rotation of frame B with respect to frame A and the vector magnitude is the instantaneous rate of this rotation. The subscript indicates the frame in which the angular velocity is resolved. 'SC' refers to the spacecraft body frame. | ![]() |
radians/second | 1.3.112.4.X.8.3 |