The monostatic RCS is calculated and compared with measured data published in the following article: A.C. Woo, H.T.G. Wang, M.J Schuh and M.L Sanders “Benchmark Radar Targets for the Validation of Computational Electromagnetics Programs” IEEE Antennas and Propagation Magazine, Vol. 35, No.
1, February 1993.
These models are intended for validation and calibration of electromagnetic simulation software.
All simulations with CAPITOLE-RCS software were performed on a Windows 10 laptop with Intel core i7 CPU and 16 Gb RAM memory.
Metallic Almond” is not in fact a simple shape.
It is defined by mathematical equations to form an almond-shaped surface.
This model is very interesting for the study of SCR, as it highlights the great dynamics of the SCR value.
The mesh must be refined on the tip and base to maintain good precision on the results.
Total length is 0.25 m (9.936 inches).
Monostatic RCS is calculated at 3 frequencies: 1.19, 7 and 9.92 GHz.
For vertical and horizontal polarization.
RCS is plotted in dBm2 as a function of azimuth angle from 0 to 180°.
Azimuth zero corresponds to incidence on the tip.
The elevation angle is zero.
The moment method was used with the MSCBD solver and EFIE equations.
| 1.19 GHz | 7 GHz | 9.92 GHz | |
|---|---|---|---|
| Mesh size | Lambda/40 | Lambda/15 | Lambda/15 |
| Number of unknowns | 3 546 | 17 262 | 34 692 |
| Total duration | 2 seconds | 17 seconds | 57 seconds |
The model was created from the analytical expression to create a curve and rotated to create a surface.
Total length is 0.254 m (10 inches).
Simulation parameters :
Monostatic RCS is calculated at 2 frequencies: 1.18 and 9 GHz.
For vertical and horizontal polarization.
RCS is plotted in dBm2 as a function of azimuth angle from 0 to 180°.
Azimuth zero corresponds to incidence on the tip.
The elevation angle is zero.
The moment method was used with the MSCBD solver and EFIE equations.
| 1.18 GHz | 9 GHz | |
|---|---|---|
| Mesh size | Lambda/50 | Lambda/20 |
| Number of unknowns | 3 648 | 34 968 |
| Total duration | 1 second | 1 minute and 12 seconds |
The model was created from the analytical expression to create a curve and rotated to create a surface.
Total length is 0.191 m (7.5 inches).
Simulation parameters :
Monostatic RCS is calculated at 2 frequencies: 1.57 and 9 GHz.
For vertical and horizontal polarization.
RCS is plotted in dBm2 as a function of azimuth angle from 0 to 180°.
The elevation angle is zero.
The moment method was used with the MSCBD solver and EFIE equations.
| 1.57 GHz | 9 GHz | |
|---|---|---|
| Mesh size | Lambda/40 | Lambda/15 |
| Number of unknowns | 3 288 | 15 096 |
| Total duration | 1 second | 13 seconds |
The model was created from the analytical expression to create a curve and rotated to create a surface.
Total length is 0.689 m (27.127 inches).
Monostatic RCS is calculated at 2 frequencies: 869 MHz and 9 GHz.
For vertical and horizontal polarization.
RCS is plotted in dBm2 as a function of azimuth angle from -180 to 0°. The azimuth of -180 degrees corresponds to the incidence on the tip. The elevation angle is zero.
The moment method was used and the EFIE equations were applied.
| 869 MHz | 9 GHz | |
|---|---|---|
| Mesh size | Lambda/40 | Lambda/20 |
| Number of unknowns | 8 664 | 227 793 |
| Total duration | 12 seconds | 3h11 min (on a 48-core server) |
The model was created from the analytical expression to create a curve and rotated to create a surface.
Total length is 0.689 m (27.127 inches).
Monostatic RCS is calculated at 2 frequencies: 869 MHz and 9 GHz.
For vertical and horizontal polarization.
RCS is plotted in dBm2 as a function of azimuth angle from -180 to 0°. The -180° azimuth corresponds to the incidence on the tip. The elevation angle is zero.
The moment method was used with the MSCBD solver and EFIE equations.
| 869 MHz | 9 GHz | |
|---|---|---|
| Mesh size | Lambda/40 | Lambda/15 |
| Number of unknowns | 8 952 | 131 508 |
| Total duration | 13 seconds | 7 min 26 seconds |
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