RCS Validation of Asymptotic Techniques Using Measured Data of an Electrically Large Complex Model Airframe

Authors

  • Ciara Pienaar Department of Electrical Electronic and Computer Engineering University of Pretoria, Pretoria, South Africa
  • Johann W. Odendaal Department of Electrical Electronic and Computer Engineering University of Pretoria, Pretoria, South Africa
  • Johan Joubert Department of Electrical Electronic and Computer Engineering University of Pretoria, Pretoria, South Africa
  • Johan C. Smit Defence Peace Safety and Security Council for Scientific and Industrial Research, Pretoria, South Africa
  • Jacques E. Cilliers Defence Peace Safety and Security Council for Scientific and Industrial Research, Pretoria, South Africa

Keywords:

Asymptotic methods, CAD model accuracy, RCS measurements, validation

Abstract

This paper validates the accuracy with which various asymptotic techniques including RL-GO and SBR can calculate the RCS of an electrically large complex airframe. This target has a maximum electrical length of 106?. Two CEM packages are utilized namely, CST MWS and FEKO. The simulated RCS results are compared to measured RCS data, obtained in a compact range. The effect of the 3D CAD model accuracy on the simulation accuracy is also investigated. Comparisons between simulated and measured RCS data are provided using RCS plots and ISAR images.

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References

J. E. Ciliers, J. M. Steyn, J. C. Smit, C. Pienaar, and M. Pienaar, “Considering CAD model accuracy for radar cross section and signature calculations of electrically large complex targets,” in International Radar Conference, Lille, 2014.

F. Weinmann, “Ray tracing with PO/PTD for RCS modeling of large complex objects,” IEEE Transactions on Antennas and Propagation, vol. 54, no. 6, pp. 1797-1806, June 2006.

J. C. Smit, J. E. Cilliers, and E. H. Burger, “Comparison of MLFMM, PO and SBR for RCS investigations in radar applications,” in IET International Conference on Radar Systems, Glasgow, 2012.

I. M. Martin, M. A. Alves, G. G. Peixoto, and M. C. Rezende, “Radar cross section measurements and simulations of a model airplane in the Xband,” PIERS Online, vol. 5, no. 4, pp. 377-380, 2009.

B. Jacobs and D. E. Baker, “Validation of a computational electromagnetic model of a Boeing 707 aircraft by comparison to scale model measurements,” in Conference on Antennas and Propagation in Wireless Communications, Cape Town, 2012.

C. Pienaar, J. W. Odendaal, J. C. Smit, J. Joubert, and J. E. Cilliers, “RCS results for an electrically large realistic model airframe,” Accepted for Publication in the Applied Computational Electromagnetic Society Express Journal, 2016.

FEKO Suite, Altair, South Africa, www.feko.info, 2015.

CST STUDIO SUITE® 2015, CST AG, Germany, www.cst.com

U. Jakobus, “Advances in EM simulations,” in Altair Technology Conferences, Dearborn, MI, USA, 6 May 2015.

FEKO Altair, “FEKO Suite 7.0.2 Feature Update,” 6 May 2015. [Online]. Available: https://www.feko. info/about-us/News/feko-suite-7.0.2-featureupdate/view. [Accessed Aug. 2015].

R. Bhalla and H. Ling, “Cross range streaks in ISAR images generated via the shooting-andbouncing ray technique: Cause and solutions,” IEEE Antennas and Propagation Magazine, vol. 39, no. 2, pp. 76-80, 1997.

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Published

2021-08-08

How to Cite

[1]
Ciara Pienaar, Johann W. Odendaal, Johan Joubert, Johan C. Smit, and Jacques E. Cilliers, “RCS Validation of Asymptotic Techniques Using Measured Data of an Electrically Large Complex Model Airframe”, ACES Journal, vol. 32, no. 01, pp. 60–67, Aug. 2021.

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General Submission