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For this tutorial lesson, you need to download the STEP STL model file containing the CAD models of the buildings. The file is called "AnnArborDowntown.STL" and features a simplified model of part of the University of Michigan's Central Campus in downtown Ann Arbor, MI. To download the file [http://www.emagtech.com/downloads/ProjectRepo/AnnArborDowntown.zip click here].
== Constructing the Downtown Ann Arbor Scene ==
For this tutorial lesson, you will create a large terrain profile in the project workspace. Right-click on the '''Penetrable Surfaces''' item in the '''Physical Structure''' section of the navigation tree and select '''Insert New Terrain…''' from the contextual menu. The terrain surface group "Terrain_1" you created remains active for drawing new objects. Draw a rectangle, by clicking the '''Rectangle Strip''' [[Image:RectangleStripIconx.png]] button of the Object Toolbar or select the menu item <b>Object → Surface → Rectangle Strip</b>. <table><tr><td> [[Image:TER_L7picA.png|thumb|left|360px|EM.Terrano's default Penetrable Surface dialog.]] </td></tr></table> <table><tr><td>[[Image:Picasso L3 Fig1A.png|thumb|720px|Selecting the Rectangle Strip tool in the object toolbar.]]</td></tr></table> <table><tr><td>[[Image: TER_L7picB.png|thumb|480px|The property dialog of the rectangle strip object.]]</td></tr></table> Please note that external CAD objects are always imported to [[Building_Geometrical_Constructions_in_CubeCAD | CubeCAD]] [[Image:cubecadlogo.png]] first. From CubeCAD you can transfer all or some of the imported object to any of the other computational modules. For this lesson, first create an impenetrable surface group called Block_1 in [[EM.Terrano]]'s navigation tree with all the default settings. This means that your buildings will have the default dark brown color and their material composition would be "Brick" with ε<sub>r</sub> = 4.4 and σ = 0.001S/m. Check the box labeled '''Adjust Blocks to Terrain Elevation''' to place building objects on the surface of the terrain.
To import the building models, go to the File Menu and select <b>Import...</b>. The standard Windows Open Dialog opens up with the file type set to <b>.STL</b>. Browse your folders to find the downloaded "AnnArborDowntown.STL" file. An object appears in the project workspace of the CubeCAD Module as shown in the figure below.
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== Defining the Transmitter & Receivers ==
Use the Basic Link Wizard to create a vertically polarized dipole transmitter and a grid of vertically polarized dipole receivers. Use the following parameters for the wizard:
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Run the sweep simulation. At the end of the parametric sweep, a total of 8 eight coverage maps appear in the Observables section of the navigation tree, one for each transmitter height value and the last two representing the mean and standard deviation maps.
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