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

doi:10.1088/1674-1056/27/7/074102

中国物理B ›› 2018, Vol. 27 ›› Issue (7): 74102-074102.doi: 10.1088/1674-1056/27/7/074102

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

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

Dong-Min Zhang(张东民), Cheng Liao(廖成), Liang Zhou(周亮), Xiao-Chuan Deng(邓小川), Ju Feng(冯菊)

1 Institute of Electromagnetics, Southwest Jiaotong University, Chengdu 610031, China;
2 Science and Technology on Electronic Information Control Laboratory, Chengdu 610031, China

收稿日期:2017-09-18 修回日期:2018-03-07 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: Cheng Liao E-mail:c.liao@swjtu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61771407).

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

Received:2017-09-18 Revised:2018-03-07 Online:2018-07-05 Published:2018-07-05
Contact: Cheng Liao E-mail:c.liao@swjtu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61771407).

摘要/Abstract

摘要： 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.

关键词: parabolic equation, rough surface, alternating direction implicit (ADI) difference, normalized radar cross section

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.

Key words: parabolic equation, rough surface, alternating direction implicit (ADI) difference, normalized radar cross section

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

41.20.-q (Applied classical electromagnetism) 42.25.Bs (Wave propagation, transmission and absorption)

张东民, 廖成, 周亮, 邓小川, 冯菊. Reliable approach for bistatic scattering of three-dimensional targets from underlying rough surface based on parabolic equation[J]. 中国物理B, 2018, 27(7): 74102-074102.

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[J]. Chin. Phys. B, 2018, 27(7): 74102-074102.

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

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

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