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Nyasha

FEKO VV, HH, VH, HV simulations

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Hi guys,

I want to learn to simulate the RCS for different polarisations, VV, HH, VH, HV. I understand the example stated out in the example guide - however, it does not explicitly state how to go about for the four polarisations.

How do we go about simulating the RCS for the four polarisations?

 

Nyasha

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Hi Nyasha

 

In CADFEKO define your plane wave. The important parameter is the Polarization angle (degrees).

This will either be 0 or 90. Select 0 for vertical and 90 for horizontal.

cadfeko_setup.png

Request the far field in the plane wave incident direction (for monostatic RCS of course, for bistatic, set calculate as specified)

cadfeko_setup_Ff.png

 

Then in POSTFEKO select the component of the far field to plot. Theta will be vertical and Phi will be horizontal.

So selecting 0 polarization in CADFEKO and Phi in POSTFEKO will be VH polarization.postfeko_Setup.png

The above will give 2 of the 4 different polarizations.

 

To simulate all 4 in a single model, define a 2nd configuration in CADFEKO where you set the plane wave polarization angle to the other of 0/90. You can rename the planewave, configuration and far field request for convenience to _H or _V or as preferred. You must also set in CADFEKO "Sources per configuration" by clicking on the Configuration settings icon just to the left of the + icon in the window below. This will allow you to set a different plane wave for each configuration.

cadfeko_setup_configs.png

 

Then in POSTFEKO you have to select the configuration's far field to plot - select either in the result palette on the right (click the Source dropdown) or from the results browser on the left.

postfeko_mult_config.png

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