SavedAdd your journal

Journals / Sigma Mühendislik ve Fen Bilimleri Dergisi / 2019 / Cilt: 37 - Sayı: 4

AN ACCURATE AND EFFECTIVE IMPLEMENTATION OF PHYSICAL THEORY OF DIFFRACTION TO THE SHOOTING AND BOUNCING RAY METHOD VIA PREDICS TOOL

Özkan KIRIK
Caner ÖZDEMİR
Pages
1152–1166
Publication Date
2019-12-01
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

To better assess the effect of diffraction phenomenon to the total RCS value, more realistic targets; namely a missile and a helicopter target are analyzed by comparing the RCS results with and without PTD contributions.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this paper, a compact and effective implementation of physical theory of diffraction (PTD) formulation is proposed.
📊
Key Findings & Data:The PTD formulation is tailored to recently developed high-frequency radar cross section (RCS) prediction tool; Predics.
💡
Conclusion & Impact:To better assess the effect of diffraction phenomenon to the total RCS value, more realistic targets; namely a missile and a helicopter target are analyzed by comparing the RCS results with and without PTD contributions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Radar cross section · computational electromagnetic tools · physical theory of diffraction

Abstract

In this paper, a compact and effective implementation of physical theory of diffraction (PTD) formulation is proposed. The PTD formulation is tailored to recently developed high-frequency radar cross section (RCS) prediction tool; Predics. This PTD implementation is unique such a way that it is specially tailored to shooting and bouncing ray (SBR) technique via ray tracing and field tracing techniques. The detailed derivation of this PTD implementation is formulated and the algorithm steps are given together with its inclusion to Predics. The success and the validity of the proposed PTD implementation to the ray-launching RCS simulator have been tested with several benchmark targets that have either analytical or measured RCS values. Simulated RCS results ensure the accuracy of the proposed diffraction formulation that has been attached to the SBR technique over the test targets given within the paper. To better assess the effect of diffraction phenomenon to the total RCS value, more realistic targets; namely a missile and a helicopter target are analyzed by comparing the RCS results with and without PTD contributions.

🔖

Cite This Article

KIRIK, Ö., ÖZDEMİR, C. (2019). AN ACCURATE AND EFFECTIVE IMPLEMENTATION OF PHYSICAL THEORY OF DIFFRACTION TO THE SHOOTING AND BOUNCING RAY METHOD VIA PREDICS TOOL. Sigma Mühendislik ve Fen Bilimleri Dergisi, Cilt: 37 - Sayı: 4, 1152–1166. https://ajindex.com/articles/419114

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (13)

  1. Ling H, Chou RC, Lee SW. Shooting and bouncing rays: calculating the RCS of an arbitrarily shaped cavity, IEEE T Antenn Propag 1989; 37: 194–205
  2. Ling H, Lee SW, Chou RC. High frequency RCS of open cavities with rectangular and circular cross-sections. IEEE T Antenn Propag 1989; 37: 648–654
  3. Youssef NN. Radar cross section of complex targets. Proc IEEE 1989; 77: 722–734
  4. Weinmann F, Nitschkowski J. A SBR simulator with GO-PO for calculating scattered fields from coated surfaces. In: Proceedings of the 4th European Conference on Antennas and Propagation; 12–16 April 2010, Barcelona, Spain. pp. 1–4
  5. Jin JM, Ling F, Carolan ST, Song JM, Gibson WC, Chew WC, Lu CC, Kipp R. A hybrid SBR/MoM technique for analysis of scattering from small protrusions on a large conducting body. IEEE T Antenn Propag 1998; 49: 1349–1357
  6. Liu K., Balanis C.A., Griesser T. An integral equation solution for the RCS of large dihedral corner reflectors. Digest on Antennas and Propagation Society International Symposium 1989, San Jose, CA, USA, USA [7] Luebbers R, Steich D, Kunz K. FDTD calculation of scattering from frequency-dependent materials. IEEE T Antenn Propag 1993; 41: 1249–1257
  7. Manyas A, Gürel L. Memory-efficient multilevel physical optics algorithm for fast computation of scattering from three-dimensional complex targets. In: Computational Electromagnetics Workshop; 30–31 August 2007; İzmir, Turkey. pp. 26–30
  8. Pan XM, Pi WC, Yang ML, Peng Z, Sheng XQ. Solving problems with over one billion unknowns by the MLFMA. IEEE T Antenn Propag 2012; 60: 2571–2574 [10] Ling, H., Chou, R.C., and Lee, S.W., Shooting and bouncing rays: Calculating the RCS of an arbitrarily shaped cavity, IEEE Trans Anten Propag 1989, 37:194-205
  9. Weinmann F. Ray tracing with PO/PTD for RCS modeling of large complex objects. IEEE T Antenn Propag 2006; 54: 1797–1806
  10. CST – Electromagnetic Simulation Software Available at
  11. Özdemir, C., Yılmaz, B., and Kırık, Ö., “pRediCS: A new GO-PO based ray launching simulator for the calculation of electromagnetic scattering and RCS from electrically large and complex structures” Turkish Journal of Electrical Engineering & Computer Sciences, Vol. 22, 1255 – 1269 (2014)
  12. Özdemir, C., Yılmaz, B., Kırık, Ö., Sütcüoğlu, Ö., “A Fast and Efficient RCS Calculation and ISAR Image Formation Tool: pRediCS”, 10th European Conference on Synthetic Aperture Radar (EUSAR 2014), Berlin, 2014. (poster
  13. Balanis CA.