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[[Image:Libera L3 Fig5.png|thumb|left|480px640px|The Radar Cross Section dialog.]]
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== Running a Surface MoM Simulation of the Spherical Metal Target ==
[[EM.IlluminaLibera]] uses a triangular surface mesh generator to discretize the surface and solid geometric objects. The triangular cells are usually generated to be as regular as possible with almost equal surface areas throughout the entire mesh. Keep the default mesh density of 10 cells per wavelength and generate the mesh of your spherical target.
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[[Image:Libera_L3_FigFreeze.png|thumb|left|360px|Freezing an object in EM.Libera.]]
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Next, activated your PEC_1 group from its contextual menu and draw a PEC rectangle strip object. To draw a rectangle, click the '''Rectangle Strip''' [[Image:RectangleStripIconx.png]] button of the Object Toolbar or select the menu item <b>Object → Surface → Rectangle Strip</b>.
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[[Image:Libera_L3_FigActivate.png|thumb|left|360px|Activating PEC_1 group in EM.Libera.]]
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