15.1. Example 1: Monostatic RCS of a sphere and a box
In this example, the Monostatic RCS of a box and a sphere is calculated.
Step 1
Start newFASANT.
Start newFASANT window
Step 2
Select File and click on New
New File
Step 3
Select GTD-PO.
Method Type selection
Step 4
Click on Geometry→Solid→Sphere, which requires the center and the radius, as shown in the next Figure.
In this example the user enters the following values into the command line:
- Center: 0 0 0
- Radius: 1.0
Create sphere command
Step 5
Click on Geometry → Solid → Box, which requires the first corner of the base, width, depth, and height as shown in the next Figure.
In this example the user enters the following values into the command line:
- First corner base:2.5 -0.5 -0.5
- Width: 1.0
- Depth: 1.0
- Height: 1.0
Step 6
Click on Simulation → Parameters.
Step7
On the top left side of the newFASANT window, the user can enter the desired parameters for this simulation, as shown in next Figure.
Select 1 bounce (simple reflection) and a frequency of3.0 GHz and left-click the Save button.
Simulation Parameters panel
Step8
Select RCS → Parameters.
RCS menu
Step9
This command appears at the top left side of the newFASANT window as shown in the next Figure.
Select Monostatic RCS only.
RCS panel
Step10
Select Source→ Parameters.
Source menu
Step 11
Introduce the source position (r, theta, and phi), as shown in the next Figure and left-click on the Save button.
Source panel
Step 12
In the Output tab, introduce the observation information: sweep on theta with 181 samples.
Observation directions panel
Step 13
Before running the case, select Meshing → Create Mesh.
Meshing menu
Step 14
Select 1 processor and define the curvature mesh option with a distance error of 0.01 and surface error of 0.08 and left-click on Mesh.
Meshing panel
Left-clicking on Mesh launches the meshing engine as shown in the next Figure:
Step 15
To obtain information about the mesh, select Meshing →Visualize Existing Mesh.
Meshing visualization
Step 16
Select Calculate → Execute and select the number of processors available to simulate this case.
Calculate panel
Process Log panel
Step 17
When the simulation finishes we can visualize the simulation results. Click on Show Results →RCS→ View Cuts, which allows the user to see the RCS graphic (in Figure 52).
Show Results menu
RCS visualization
Step 18
Click on Show Results →RCS → View Text Files. Then select the Steps and press OK to see the RCS data file.
File text panel
Step 19
Click on Show Results → Ray Tracing → View Ray. It is possible to represent the ray tracing of the sources interacting with the geometry
Show Results menu
Ray-tracing visualization