Analysis for Scattering of Non-homogeneous Medium by Time Domain Volume Shooting and Bouncing Rays

Authors

  • Jun Li School of Electronic and Optical Engineering Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China
  • Huaguang Bao School of Electronic and Optical Engineering Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China
  • Dazhi Ding School of Electronic and Optical Engineering Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China

Keywords:

Non-homogeneous dielectric, time domain, Volume Shooting and Bouncing Rays (VSBR)

Abstract

In order to evaluate scattering from hypersonic vehicles covered with the plasma efficiently, time domain volume shooting and bouncing rays (TDVSBR) is first introduced in this paper. The new method is applied to solve the transient electromagnetic scattering from complex targets, which combines with non-homogeneous dielectric and perfect electric conducting (PEC) bodies. To simplify the problem, objects are discretized into tetrahedrons with different electromagnetic parameters. Then the reflection and transmission coefficients can be obtained by using theory of electromagnetic waves propagation in lossy medium. After that, we simulate the reflection and transmission of rays in different media. At last, the scattered fields or radiation are solved by the last exiting ray from the target. Compared with frequencydomain methods, time-domain methods can obtain the wideband RCS efficiently. Several numerical results are given to demonstrate the high efficiency and accuracy of this proposed scheme.

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Author Biographies

Jun Li, School of Electronic and Optical Engineering Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China

Jun Li was born in Taizhou, China. He received the B.S. degree in Optical Engineering from the School of Electrical Engineering and Optical Technique, Zijin College of Nanjing University of Science and Technology, Nanjing, China, in 2013. He is currently pursuing his Ph.D. degree in Electronic Engineering at Nanjing University of Science and Technology. The interest of his research are antennas, high frequency method and computational electromagnetics.

Huaguang Bao, School of Electronic and Optical Engineering Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China

Huaguang Bao received the B.S. and Ph.D. degrees in Electromagnetic Field and Microwave Technique from Nanjing University of Science and Technology (NUST), Nanjing, China, in 2011 and 2017, respectively. In 2017, he was a Post-Doctoral Scholar with the Computational Electromagnetics and Antennas Research Laboratory, Department of Electrical Engineering, Pennsylvania State University, University Park, PA, USA. He is currently an Associate Professor with the Electronic Engineering of NJUST. His research interests include semiconductor simulation, RF-integrated circuits, and computational electromagnetics.

Dazhi Ding, School of Electronic and Optical Engineering Nanjing University of Science and Technology, Nanjing, Jiangsu Province 210094, China

Dazhi Ding was born in Jiangsu, China, in 1979. He received the B.S. and Ph.D. degrees in Electromagnetic Field and Microwave Technique from Nanjing University of Science and Technology (NUST), Nanjing, China, in 2002 and 2007, respectively. During 2005, he was with the Center of Wireless Communication in the City University of Hong Kong, Kowloon, as a Research Assistant. He is currently an Associate Professor with the Electronic Engineering of NJUST. He is the author or co-author of over 30 technical papers. His current research interests include computational electromagnetics, electromagnetic scattering, and radiation.

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Published

2021-03-08

How to Cite

[1]
Jun Li, Huaguang Bao, and Dazhi Ding, “Analysis for Scattering of Non-homogeneous Medium by Time Domain Volume Shooting and Bouncing Rays”, ACES Journal, vol. 36, no. 3, pp. 245–251, Mar. 2021.

Issue

2021: Vol 36 Iss 3

Section

Articles