{{projectinfo|Tutorial| Simulating Radiation in the Presence of Large Metallic Shipboard Platforms|Illumina L4 Fig title.png|In this project, you will compute the radiation pattern of a short dipole radiator in the presence of a large metallic ship model imported from a CAD file.|
*[[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]]
*CAD Import
*STEP Model
In this tutorial you will learn how to import an external CAD model and set up a large-scale physical optics simulation in the [[EM.Illumina]].
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== Getting Started ==
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For this tutorial lesson, you need to import a STEP CAD model file called "[http://www.emagtech.com/downloads/ProjectRepo/Ship.zip Ship.STP]" from our [http://www.emagtech.com/downloads/ProjectRepo/Ship.zip File Repository]. <u>Make sure you have chosen meters as the unit project</u>.
== Importing the Ship Model ==
In [[EM.Cube]], external objects are always imported to [[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]] [[Image:cubecadlogo.png]] first. From [[CubeCAD]] you can transfer an imported object to any of the other computational modules. To import the ship model, go to '''File Menu''' and select <b>Import...</b>. The standard Windows Open dialog opens up with the file type set to ".STP". Browse your folders to find the downloaded CAD model file named "Ship.STP". Select it and click the {{key|Open}} button. A total 12 solid CAD objects appear in the project workspace of the [[CubeCAD]] Module as shown in the figure below:
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Next, you have to move all the imported solids to the PEC_1 group of [[EM.Illumina]]. To do so, select all the solid names on the navigation tree of the [[CubeCAD]] module. Start with <b>Solid_1</b> and select it. Then, hold down the keyboard's {{key|Shift}} key and click <b>Solid_12</b>. While still holding down the shift key, right-click on the selection and select <b>Move To → [[EM.Illumina]] → PEC_1</b> from the contextual menu. All the objects will disappear from [[CubeCAD]] and will reappear in [[EM.Illumina]]'s workspace under the PEC_1 group.
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The figures below show the dB-scale 2D graphs of the radiation patterns in the XY, YZ and ZX planes plotted in EM.Grid.
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