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Title: Combining genetic algorithm based joint time-frequency analysis and keystone transform for ISAR image enhancement
Authors: Sakin, A.O.
Songur, A.C.
Onat, E.
Keywords: Data handling
Image enhancement
Inverse problems
Inverse synthetic aperture radar
Motion compensation
Radar imaging
Rotational flow
Wavelet transforms
Cross ranges
Gabor wavelet transforms
Inverse synthetic aperture radar images
Joint time-frequency analysis
Key stone transform
Manoeuvring target
Matching pursuit
Range cell migration
Rotational motion
Translational motions
Genetic algorithms
Issue Date: 2022
Publisher: Institute of Electrical and Electronics Engineers Inc.
Abstract: Translational and rotational motion of maneuvering targets can cause range and cross-range cell migrations, culminating in a highly smeared final inverse synthetic aperture radar (ISAR) picture. To overcome this problem, a method for ISAR high-resolution imaging and motion compensation (MOCOMP) is proposed that combines adaptive joint timefrequency (AJTF) analysis and keystone transform (KT) based on genetic algorithm (GA). In synthetic data processing, the motion characteristics of the target are estimated using the Matching Pursuit (MP) technique with a third-order model of polynomial function. The Gabor-wavelet transform (GWT) is utilized as a JTF tool to generate a corresponding 3D time-range-Doppler cube. Keystone transform as remapping of the time axis is applied and Translational Motion Compensation (TMC), Rotational Motion Compensation (RMC), and KT have all been proved to operate well together. In raw data processing, the high-resolution image is obtained by using an AJTF and KT based on a genetic algorithm sans MP and GWT to compensate for migrations in the range and Doppler axis. © 2022 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.
Description: Airbus;Globes;Hensoldt
14th European Conference on Synthetic Aperture Radar, EUSAR 2022 -- 25 July 2022 through 27 July 2022 -- 184506
ISBN: 9783800758234
ISSN: 2197-4403
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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