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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 13 — Jun. 20, 2011
  • pp: 12291–12304

Investigation of range profiles from buried 3-D object based on the EM simulation

Siyuan He, Lei Zhuang, Fan Zhang, Weidong Hu, and Guoqiang Zhu  »View Author Affiliations

Optics Express, Vol. 19, Issue 13, pp. 12291-12304 (2011)

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The 1-D range profiles are suitable features for target identification and target discrimination because they provide discriminative information on the geometry of the target. To resolve features of the buried target, the contribution from individual scattering centers of the buried target in the range profiles need to be identified. Thus, the study of complex scattering mechanisms from which the range profiles are produced is of great importance. In order to clearly establish the relationship between the range profile characteristics and the complicated electromagnetic (EM) scattering mechanisms, such as reflections and diffractions, a buried cuboid possessing straight edges is chosen as the buried target in this paper. By performing an inverse discrete Fourier transform (IDFT) on the wideband backscattered field data computed with an accurate and fast EM method, the 1-D range profiles of the buried cuboid is successfully simulated. The simulated range profiles provide information about the position and scattering strength of the cuboid’s scattering centers along the range direction. Meanwhile, a predicted distribution of the scattering centers is quantitatively calculated for the buried cuboid based on the ray path computation. Good agreement has been found between simulated and predicted locations of the range profiles. Validation for amplitudes of the range profiles is further provided in the research. Both the peak amplitudes and locations of the range profiles could be understood and analyzed based on the knowledge of the scattering mechanisms. The formation of the 1-D range profiles has been revealed clearly from the full analysis of the scattering mechanisms and contributions. The problem has been solved for both near and far field regions. Finally, the buried depth and the characteristic size of the object are reasonably deduced from the simulated range profiles.

© 2011 OSA

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(290.0290) Scattering : Scattering

ToC Category:
Remote Sensing and Sensors

Original Manuscript: May 2, 2011
Revised Manuscript: May 26, 2011
Manuscript Accepted: May 27, 2011
Published: June 9, 2011

Siyuan He, Lei Zhuang, Fan Zhang, Weidong Hu, and Guoqiang Zhu, "Investigation of range profiles from buried 3-D object based on the EM simulation," Opt. Express 19, 12291-12304 (2011)

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