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Chin. Phys. B, 2018, Vol. 27(7): 074102    DOI: 10.1088/1674-1056/27/7/074102

Reliable approach for bistatic scattering of three-dimensional targets from underlying rough surface based on parabolic equation

Dong-Min Zhang(张东民)1,2, Cheng Liao(廖成)1, Liang Zhou(周亮)1, Xiao-Chuan Deng(邓小川)1, Ju Feng(冯菊)1
1 Institute of Electromagnetics, Southwest Jiaotong University, Chengdu 610031, China;
2 Science and Technology on Electronic Information Control Laboratory, Chengdu 610031, China
Abstract  A parabolic equation (PE) based method for analyzing composite scattering under an electromagnetic wave incidence at low grazing angle, which composes of three-dimensional (3-D) electrically large targets and rough surface, is presented and discussed. A superior high-order PE version is used to improve the accuracy at wider paraxial angles, and along with the alternating direction implicit (ADI) differential technique, the computational efficiency is further improved. The formula of bistatic normalized radar cross section is derived by definition and near-far field transformation. Numerical examples are given to show the validity and accuracy of the proposed approach, in which the results are compared with those of Kirchhoff approximation (KA) and moment of method (MoM). Furthermore, the bistatic scattering properties of composite model in which the 3-D PEC targets on or above the two-dimensional Gaussian rough surfaces under the tapered wave incidence are analyzed.
Keywords:  parabolic equation      rough surface      alternating direction implicit (ADI) difference      normalized radar cross section  
Received:  18 September 2017      Revised:  07 March 2018      Accepted manuscript online: 
PACS:  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
  41.20.-q (Applied classical electromagnetism)  
  42.25.Bs (Wave propagation, transmission and absorption)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61771407).
Corresponding Authors:  Cheng Liao     E-mail:

Cite this article: 

Dong-Min Zhang(张东民), Cheng Liao(廖成), Liang Zhou(周亮), Xiao-Chuan Deng(邓小川), Ju Feng(冯菊) Reliable approach for bistatic scattering of three-dimensional targets from underlying rough surface based on parabolic equation 2018 Chin. Phys. B 27 074102

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