volume | PIER Journals

Abstract

The high-frequency method for solving the scattering from homogeneous dielectric objects with electrically large size in half space is presented in this paper. In order to consider the scattering fields of the targets in half space, the half-space physical optics method is deduced by introducing the half-space Green's function into the conventional physical optics method (PO). Combined with the graphical-electromagnetic computing method to read the geometry information of all visible facets, the equivalent currents and the reflection coefficients are utilized to account of the homogenous dielectric objects with half-space physical optics method in half space. The numerical results show that this method is efficient and accurate.

1. Zhao, Y., X.-W. Shi, and L. Xu, "Modeling with NURBS surfaces used for the calculation of RCS," Progress In Electromagnetics Research, Vol. 78, 49-59, 2008.
doi:10.2528/PIER07082903 Google Scholar

2. Yousee, N., "Radar cross section of complex targets," Proceedings of the IEEE, Vol. 77, No. 5, 1989. Google Scholar

3. Fei, Y. and G. Zhu, "Electromagnetic diffraction of a very obliquely incident plane wave field by a wedge with anisotropic impedance faces," Journal of Electromagnetic Waves and Applications, Vol. 19, No. 12, 1671-1685, 2005.
doi:10.1163/156939305775537384 Google Scholar

4. Mallahzadeh, A. R., M. Soleimani, and J. Rashed-Mohassel, "RCS computation of airplane using parabolic equation," Progress In Electromagnetics Research, Vol. 57, 265-276, 2006.
doi:10.2528/PIER05080101 Google Scholar

5. Oo, Z. Z., E.-P. Li, and L.-W. Li, "Analysis and design on aperture antenna systems with large electrical size using multilevel fast multipole method," Journal Electromagnetic Waves and Applications, Vol. 19, No. 11, 1485-1500, 2005.
doi:10.1163/156939305775701877 Google Scholar

6. Xu, L., J. Tian, and X.-W. Shi, "A closed-form solution to analyze RCS of cavity with rectangular cross section," Progress In Electromagnetics Research, Vol. 79, 195-208, 2008.
doi:10.2528/PIER07090503 Google Scholar

7. Rao, S. M., D. R. Wilton, and A. W. Glisson, "Electromagnetic scattering by surfaces of arbitrary shape," IEEE Transactions on Antennas and Propagation, Vol. 30, No. 3, May 1982.
doi:10.1109/TAP.1982.1142818 Google Scholar

8. Han, D. H. and A. C. Polycarpou, "Ground effects for VHF/HF antennas on helicopter air frames," IEEE Transactions on Antennas and Propagation, Vol. 49, No. 3, 402-412, 2001.
doi:10.1109/8.918614 Google Scholar

9. Li, Q. and D. B. Ge, "An approach for solving ground wave scattering from objects," Journal of Microwaves, Vol. 14, No. 3, 23-28, 1998. Google Scholar

10. Liu, Z., J. He, Y. Xie, A. Sullivan, and L. Carin, "Multilevel fast multipole algorithm for general targets on a half-space interface," IEEE Transactions on Antennas and Propagation, Vol. 50, No. 12, 1838-1849, Dec. 2002.
doi:10.1109/TAP.2002.807425 Google Scholar

11. Chew, W. C., Waves and Fields in Inhomogeneous Media Van-Nostrand Reinhold, 1990.

12. Xu, L., Z. Nie, and J. Wang, "Electric-field-type dyadic Green's functions for half-spaces and its evaluation," Journal of UEST of China, Vol. 33, No. 5, 485-488, 2004. Google Scholar

13. Li, X. F., Y. J. Xie, P. Wang, and T. M. Yang, "High-frequency method for scattering from electrically large conductive targets in half-space," IEEE Antennas and Wireless Propagation Letters, Vol. 6, 2007. Google Scholar

14. Michalski, K. A. and D. Zheng, "Electromagnetic scattering and radiation by surfaces of arbitrary shape in layered media, part I: Theory," IEEE Transactions on Antennas and Propagation, Vol. 38, 335-344, 1990.
doi:10.1109/8.52240 Google Scholar

15. Yang, J. J., Y. L. Chow, and D. G. Fang, "Discrete complex images of a three-dimensional dipole above and within a lossy ground," IEEE Proceeding-H, Vol. 138, No. 4, 319-326, 1991. Google Scholar

16. Chow, Y. L., J. J. Yang, and D. G. Fang, "A closed-form spatial Green's function for the thick microstrip substrate," IEEE Transaction on Microwave Theory and Techniques, Vol. 39, No. 3, March 1991. Google Scholar

17. Dural, G. and M. I. Aksum, "Closed-form Green's function for general sources and stratified media," IEEE Transaction on Microwave Theory and Techniques, Vol. 43, No. 7, July 1995. Google Scholar

18. Aksum, M. I., "A robust approach for the derivation of closed-form Green's function," IEEE Transaction on Microwave Theory and Techniques, Vol. 44, No. 5, May 1996. Google Scholar

19. Klement, D., J. Preissner, and V. Stein, "Special problem in applying the physical optics method for backscatter computations of complicated objects," IEEE Transactions on Antennas and Propagation, Vol. 36, No. 2, February 1988.
doi:10.1109/8.1100 Google Scholar

20. Ansorge, H., "Electromagnetic reflection from curved dielectric interface," IEEE Transactions on Antennas and Propagation, Vol. AP-34, No. 6, 1986. Google Scholar

21. Ruan, Y., Radar Cross Section and Stealth Technology, National Defense Industry Press, 1998.

Dr. Xiao-Feng Li

Prof. Yong-Jun Xie

Dr. Rui Yang