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EM.Terrano

132 bytes added, 17:47, 26 July 2015
/* A Note on the Rotation of Antenna Radiation Patterns */
=== A Note on the Rotation of Antenna Radiation Patterns ===
EM.Terrano's Transmitter Set dialog and Receiver Set dialog both allow you to rotate an imported radiation pattern. In that case, you need to specify the '''Rotation''' angles in degrees about the X-, Y- and Z-axes. It is important to note that these rotations are performed sequentially and in the following order: first a rotation about the X-axis, then a rotation about the Y-axis, and finally a rotation about the Z-axis. In addition, all the rotations are performed with respect to the "rotated" location local coordinate systems (LCS). In other words, the first rotation with respect to the local X-axis, transforms the XYZ LCS to a new primed X<sup>&prime;</sup>Y<sup>&prime;</sup>Z<sup>&prime;</sup> LCS. The second rotation is performed with respect to the new Y<sup>&prime;</sup>-axis. The second rotation and transforms the X<sup>&prime;</sup>Y<sup>&prime;</sup>Z<sup>&prime;</sup> LCS to a new double-primed X<sup>&prime;&prime;</sup>Y<sup>&prime;&prime;</sup>Z<sup>&prime;&prime;</sup> LCS. The third rotation is finally performed with respect to the new Z<sup>&prime;&prime;</sup>-axis. The figures below shows single and double rotations.
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