A New Method to Evaluate the Quality of ISAR Image

Point spread function is commonly used for radar imaging evaluation. But in the measured ISAR (inverse synthetic aperture radar) image, it is hard to find an ideal scattering center with a standard point spread function. The phenomenon leads to a difficulty in evaluating the measured ISAR image. In...

Full description

Saved in:
Bibliographic Details
Published in2021 CIE International Conference on Radar (Radar) pp. 150 - 153
Main Authors Guanghu, Jin, Yimeng, Zou, Mulan, Zou, Zhihua, He, Zaoyu, Sun, Zhen, Dong
Format Conference Proceeding
LanguageEnglish
Published IEEE 15.12.2021
Subjects
evaluation
Geometry
Image resolution
Imaging
Interpolation
ISAR (inverse synthetic aperture radar)
Radar imaging
resolution
Scattering
simulated ISAR image
Online AccessGet full text

Cover

More Information
Summary:Point spread function is commonly used for radar imaging evaluation. But in the measured ISAR (inverse synthetic aperture radar) image, it is hard to find an ideal scattering center with a standard point spread function. The phenomenon leads to a difficulty in evaluating the measured ISAR image. In this paper, we proposed a new method to accomplish this task. Firstly, a geometry of the target is established. Scattering database is obtained based electro-magnetic calculation. Then, the echo at the same posture with the measured ISAR image is obtained based on interpolation in the electro-magnetic scattering database. Lastly, the simulated ISAR image and the measured ISAR image are evaluation simultaneously. The same region in these two ISAR image are selected and evaluated with resolution. Despite the resolution of the selected region may deviate from the ideal value, the measured ISAR image can still be well evaluated based on whether the resolution of the measured ISAR image coincides with that of the simulated ISAR image. Experiments are carried out and the result show the proposed method has good performance.
ISSN:2640-7736
DOI:10.1109/Radar53847.2021.10028001