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IEICE TRANSACTIONS on Electronics

Fine Feature Analysis of Metal Plate Based on Two-Dimensional Imaging under Non-Ideal Scattering

Xiaofan LI, Bin DENG, Qiang FU, Hongqiang WANG

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Summary :

The ideal point scattering model requires that each scattering center is isotropic, the position of the scattering center corresponding to the target remains unchanged, and the backscattering amplitude and phase of the target do not change with the incident frequency and incident azimuth. In fact, these conditions of the ideal point scattering model are difficult to meet, and the scattering models are not ideal in most cases. In order to understand the difference between non-ideal scattering center and ideal scattering center, this paper takes a metal plate as the research object, carries out two-dimensional imaging of the metal plate, compares the difference between the imaging position and the theoretical target position, and compares the shape of the scattering center obtained from two-dimensional imaging of the plate from different angles. From the experimental results, the offset between the scattering center position and the theoretical target position corresponding to the two-dimensional imaging of the plate under the non-ideal point scattering model is less than the range resolution and azimuth resolution. The deviation between the small angle two-dimensional imaging position and the theoretical target position using the ideal point scattering model is small, and the ideal point scattering model is still suitable for the two-dimensional imaging of the plate. In the imaging process, the ratio of range resolution and azimuth resolution affects the shape of the scattering center. The range resolution is equal to the azimuth resolution, the shape of the scattering center is circular; the range resolution is not equal to the azimuth resolution, and the shape of the scattering center is elliptic. In order to obtain more accurate two-dimensional image, the appropriate range resolution and azimuth resolution can be considered when using the ideal point scattering model for two-dimensional imaging. The two-dimensional imaging results of the plate at different azimuth and angle can be used as a reference for the study of non-ideal point scattering model.

Publication
IEICE TRANSACTIONS on Electronics Vol.E106-C No.12 pp.789-798
Publication Date
2023/12/01
Publicized
2023/05/29
Online ISSN
1745-1353
DOI
10.1587/transele.2022ECP5054
Type of Manuscript
PAPER
Category
Electromagnetic Theory

Authors

Xiaofan LI
  National University of Defense Technology,Huaihua University
Bin DENG
  National University of Defense Technology
Qiang FU
  National University of Defense Technology
Hongqiang WANG
  National University of Defense Technology

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