Figure 1: [[PO Module]]'s Simulation Engine Settings dialog.
== Working with PO Simualtion Data ==
=== Visualizing Current Distributions ===
Figure 1: [[PO Module]]'s Frequency Settings and Angle Settings dialogs.
=== Animation Of PO Data ===
At the end of a frequency sweep, angular sweep or parametric sweep simulation in [[EM.Cube]]'s [[PO Module]], the output data are saved for visualization and plotting. In particular, if you have defined current distribution, field sensor or far field observables in your project, multiple 3D plots, as many as the total number of sweep samples, are added to the Navigation Tree. In a single simulation run, a total of 14 current distribution plots, 14 field sensor plot and 3 radiation pattern plots or 3 RCS plots are generated under every observable node defined in the Navigation Tree. However, after a sweep simulation, only one plot is saved for each sweep sample. This is done to keep the resulting plots manageable. Thus, only the total radiation pattern or total RCS are saved for each sweep sample. In the case of a current distribution observable, you have the choice to save either the magnitude of total electric current distribution '''|J<sub>s</sub>|'''or the magnitude of total magnetic current distribution '''|M<sub>s</sub>|'''. To change this, open the '''Current Distribution Dialog''' by right clicking on the observable's name in the Navigation Tree and selecting '''Properties...''' from the contextual menu. In the '''Current Display - Multiple Plots''' section of this dialog, select one of the radio sensors labeled '''Electric Current (J)''' or '''Magnetic Current (M)'''. Similarly, in the case of a field sensor observable, you have the choice to save either the total E-field magnitude plot or the total H-field magnitude plot. To change this, open the '''Field Sensor Dialog''' by right clicking on a field sensor's name in the Navigation Tree and selecting '''Properties...''' from the contextual menu. In the '''Field Display - Multiple Plots''' section of this dialog, select one of the radio sensors labeled '''E-Field''' or '''H-Field'''.
[[File:PO39.png]] [[File:PO40.png]]
Figure 1: Selecting the current or field types for sweep data visualization in [[PO Module]]'s Current Distribution and Field Sensor dialogs.
Once the sweep simulation is finished, you can click any of the field plots and visualize it in the main window. You can also animate these field plots. [[Animation]] in [[EM.Cube|EM.CUBE]] consists of consecutive display of the plots in the main window at a preset speed. To animate the field sensor plots, right click on the field sensor's name in the Navigation Tree and select '''[[Animation]]''' from the contextual menu. The field plots start to animate beginning with the first sample, going through all the plots one by one until the last one and repeating the loop all over again. While the [[animation]] proceeds in the main window, a dialog titled '''[[Animation]] Controls''' pops up at the lower right corner of the screen. You can drag this dialog anywhere in the project workspace from its title bar. The controls dialog shows the title of each graph as it is reviewed. You can set the speed of [[animation]] by typing in a value for '''Rate''', which is indeed the frame duration expressed in multiples of 100 milliseconds. The default frame duration is 300 msec. You can pause the [[animation]] and resume at any time. You can rewind to the first sample or skip to the last sample. You can also step through the samples one at a time using the increment (forward) or decrement (backward) buttons. To stop [[animation]] at any time, use the keyboard's '''Esc Key''' or click the '''Close (X)''' button of the [[animation]] controls dialog.
The [[animation]] controls dialog and [[animation]] of the H-field plots of a PEC sphere after an angular sweep.
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