Open AccessMicro‐Doppler effect removal in ISAR imaging based on Radon‐Laplace method
Author(s) -
Li Hongzhi,
Wang Xin,
Wang Yong
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.4143
Subject(s) - inverse synthetic aperture radar , radon transform , fourier transform , doppler effect , synthetic aperture radar , radar imaging , laplace transform , computer science , computer vision , artificial intelligence , radar , mathematics , physics , mathematical analysis , telecommunications , astronomy
In inverse synthetic aperture radar (ISAR) imaging, the high‐resolution images can be obtained by using Range‐Doppler algorithm. However, the rotational parts of the complex moving targets induce micro‐Doppler (m‐D) effects which influence the quality of ISAR imaging. In this Letter, a novel method of Radon‐Laplace based on the Radon transform (RT) and the Laplace operator is proposed to reduce the m‐D effect in ISAR imaging. For this method, the RT and Laplace operator are used to extract the rigid body parts in the short‐time Fourier transform domain. Then, the rigid body parts can be got through a corresponding filter on the basis of the extraction results. The simulation and measured data results demonstrate the effectiveness of the proposed method.