Parametric Scattering Center Model for Canonical and Composite Dielectric Objects

The scattering center (SC) model provides a concise, explicit description of the object electromagnetic characteristics, significantly improves the efficiency of radar signal simulations, and plays an important role in model-based automatic target recognition. The existing models are mainly develope...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2020-04, Vol.68 (4), p.3068-3079
Main Authors: Guo, Kun-Yi, Han, Xiao-Zhe, Wu, Bi-Yi, Sheng, Xin-Qing
Format: Article
Language:English
Subjects:
Automatic target recognition
Backscattering
canonical objects
Computer simulation
dielectric
Dielectrics
Electromagnetic properties
Geometry
Numerical methods
Numerical models
Object recognition
Radar cross sections
SC model
Scattering
scattering center (SC)
Shape
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Summary:The scattering center (SC) model provides a concise, explicit description of the object electromagnetic characteristics, significantly improves the efficiency of radar signal simulations, and plays an important role in model-based automatic target recognition. The existing models are mainly developed for conducting objects, and few are developed for dielectric ones. The SC models of dielectric objects are essentially different from those of their conducting counterparts due to the different scattering mechanisms. In this article, the backscattering mechanisms of canonical dielectric structures are studied, and their corresponding SC models are proposed. More importantly, the parametric SC models of the composite objects of canonical structures are first presented. These SC models are validated by comparing the radar cross section (RCS), the time-frequency representation (TFR), and the high-resolution range profile (HRRP) from the SC model with the results of the full-wave numerical method.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2019.2949644