中国物理B ›› 2020, Vol. 29 ›› Issue (2): 24202-024202.doi: 10.1088/1674-1056/ab5ef9

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

A hybrid method of solving near-zone composite eletromagnetic scattering from targets and underlying rough surface

Xi-Min Li(李西敏), Jing-Jing Li(李晶晶), Qian Gao(高乾), Peng-Cheng Gao(高鹏程)   

  1. 1 Air Force Engineering University, Xi'an 710051, China;
    2 Air Force Communication NCO Academy, Dalian 116199, China;
    3 Science and Technology on Electromagnetic Scattering Laboratory, Shanghai 200438, China
  • 收稿日期:2019-07-25 修回日期:2019-10-27 出版日期:2020-02-05 发布日期:2020-02-05
  • 通讯作者: Xi-Min Li E-mail:bigboy11272000@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61372033).

A hybrid method of solving near-zone composite eletromagnetic scattering from targets and underlying rough surface

Xi-Min Li(李西敏)1, Jing-Jing Li(李晶晶)1, Qian Gao(高乾)2, Peng-Cheng Gao(高鹏程)3   

  1. 1 Air Force Engineering University, Xi'an 710051, China;
    2 Air Force Communication NCO Academy, Dalian 116199, China;
    3 Science and Technology on Electromagnetic Scattering Laboratory, Shanghai 200438, China
  • Received:2019-07-25 Revised:2019-10-27 Online:2020-02-05 Published:2020-02-05
  • Contact: Xi-Min Li E-mail:bigboy11272000@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61372033).

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摘要： For composite electromagnetic (EM) scattering from rough surface and target above it in near-field condition, modified shooting and bouncing ray (SBR) method and integral equation method (IEM), which are analytic methods combined with two-scale model for rough surface, are proposed to solve the composite near-field scattering problems. And the modified method is verified in effectiveness and accuracy by comparing the simulation results with measured results. Finally, the composite near-fielding scattering characteristics of a slanted plane and rough water surface below are obtained by using the proposed methods, and the dynamic tendency of composite scattering characteristics versus near-fielding distance is analyzed, which may have practical contribution to engineering programs in need of radar targets near-field characteristics under extra-low-altitude conditions.

关键词: near-field scattering, rough surface, target in extra-low-altitude, shooting and bouncing ray (SBR)

Abstract: For composite electromagnetic (EM) scattering from rough surface and target above it in near-field condition, modified shooting and bouncing ray (SBR) method and integral equation method (IEM), which are analytic methods combined with two-scale model for rough surface, are proposed to solve the composite near-field scattering problems. And the modified method is verified in effectiveness and accuracy by comparing the simulation results with measured results. Finally, the composite near-fielding scattering characteristics of a slanted plane and rough water surface below are obtained by using the proposed methods, and the dynamic tendency of composite scattering characteristics versus near-fielding distance is analyzed, which may have practical contribution to engineering programs in need of radar targets near-field characteristics under extra-low-altitude conditions.

Key words: near-field scattering, rough surface, target in extra-low-altitude, shooting and bouncing ray (SBR)

中图分类号:  (Scattering, polarization)

  • 42.68.Mj
42.68.Ay (Propagation, transmission, attenuation, and radiative transfer) 42.25.Bs (Wave propagation, transmission and absorption) 42.15.Dp (Wave fronts and ray tracing)