Robust ISAR Cross-Range Scaling via Two-Step Rotation Velocity Estimation | IEEE Journals & Magazine | IEEE Xplore

Robust ISAR Cross-Range Scaling via Two-Step Rotation Velocity Estimation


Graphical Abstract for Robust ISAR Cross-Range Scaling via Two-Step Rotation Velocity Estimation.

Abstract:

To obtain exact size of non-cooperative target in ISAR images, an accurate cross-range scaling (CRS) should be performed. To do this, an image based approach, which explo...Show More

Abstract:

To obtain exact size of non-cooperative target in ISAR images, an accurate cross-range scaling (CRS) should be performed. To do this, an image based approach, which exploits two sequential ISAR images based on the scale and rotational relationship between them, has been adopted in the existing ISAR CRS methods. However, they have two major problems: 1) unknown effective rotation center (ERC) of non-cooperative target, and 2) performance degradation owing to the scintillation of two ISAR images. To address these issues, in this paper, we propose a new CRS method, mainly consisting of two steps: 1) coarse estimation of rotation velocity (RV) in range-Doppler (RD) domain after feature extraction and matching, and 2) using the estimate in Step1, fine RV estimation via singular value decomposition (SVD) in range/cross-range (RC) domain. Furthermore, experimental results based on simulated and real measured data are provided to demonstrate the effectiveness of the proposed method.
Graphical Abstract for Robust ISAR Cross-Range Scaling via Two-Step Rotation Velocity Estimation.
Published in: IEEE Access ( Volume: 9)
Page(s): 148132 - 148143
Date of Publication: 15 October 2021
Electronic ISSN: 2169-3536

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