15.4. Example 4
In this example the bistatic RCS with a sweep on frequency from 2 GHz to 6 GHz with 17 steps (1 step at 250MHz) over MoM of three spherical chaffs is calculated.
Step 1
Start newFASANT.
Step 2
Select File and click on New.
New Project command
Step 3
Select Chaff.
Method Type selection box
Step 4
Click on Chaff→ Spherical Chaff and select the parameters that appear on the figure.
Spherical Dipole Chaff command
Spherical Dipole Chaff Parameters and visualization
Repeat Step 6 twice with the following parameters:
Spherical Dipole Chaff Parameters and Visualization (2Chaff)
Spherical Dipole Chaff Parameters and Visualization (3 Chaff)
Step 5
Click on Simulation → Parameters.
Simulation Parameters command
Step 6
Select a sweep on frequency from 2.0 GHz to 6.0 GHz with 17 samples as shown. Then click on Save.
Simulation Parameters panel
Step 7
Select Solver → Parameters
Solver Parameters command
Step 8
Set default solver parameters, clicking on Save.
Solver Parameters box
Step 9
Select RCS→ Parameters.
RCS Parameters command
Step 10
Select Bistatic RCS with default parameters.
RCS Parameters panel
Step 11
Select Output →Observation Directions.
Observation Directions command
Step 12
Introduce the far field observations and click on Save button.
Observation Directions panel
Step 13
Select Output → Show 3D Diagram
Show 3D Diagram option
If you see a message, click on “Yes” button.
Show 3D Diagram question
Step 14
Before running the case, select Meshing → Create Mesh.
Meshing Parameters command
Step 15
Select 10 divisions on planar and curved surfaces, 1 processor and default frequency value. Then click Mesh.
Meshing Parameters panel
Step 16
Select Calculate → Execute and the number of processors to run the case.
Execute Parameters command
Execute Parameters panel
Execute Information panel
Step 17
When the simulation finishes, we can show results. Click on Show Results → Far Field → View Cuts, to show the RCS graphic.
Far Field View Cuts command
Far Filed RCS Graphics
Step 18
Click on Show Results → View Text Files.
Far Field View Text File command
Select the frequency to show and click on OK.
Far Field Text File selection
Result Text File visualization
Step 19
Click on Show Results → RCS Diagram → View RCS 3D
View 3D RCS command
View 3D RCS