NDLI: Joint approach of translational and rotational phase error corrections for high-resolution inverse synthetic aperture radar imaging using minimum-entropy

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Joint approach of translational and rotational phase error corrections for high-resolution inverse synthetic aperture radar imaging using minimum-entropy

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Volume 10 (2016) : Issue 2, Feb

Volume 10 (2016) : Issue 1, Jan

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IET Signal Processing

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Micro & Nano Letters

The Journal of Engineering

Joint approach of translational and rotational phase error corrections for high-resolution inverse synthetic aperture radar imaging using minimum-entropy

Content Provider	IET Digital Library
Author	Xu, Gang Xing, Mengdao Yang, Lei Bao, Zheng
Abstract	In high-resolution inverse synthetic aperture radar (ISAR) imaging, the rotational motion of the targets tends to introduce the time-variant Doppler modulation in the echo, which acts as the range-variant phase errors in the phase history. Moreover, the performance of translational phase error correction may be dramatically degraded without properly considering the range-variant phase errors. In this study, a joint approach of translational and rotational phase error corrections is introduced into high-resolution ISAR imaging. In the procedure, the joint phase error correction is modelled as that of range-invariant and range-variant phase errors using a metric of minimum entropy. Then, the minimum-entropy optimisation is solved by employing a coordinate descend method based on quasi-Newton solver. In comparison of the conventional methods, the proposed approach in this study promises a better performance of phase error correction with a higher efficiency. Finally, experiments based on simulated and measured data are performed to confirm the effectiveness of the proposed algorithm.
Starting Page	586
Ending Page	594
Page Count	9
ISSN	17518784
Volume Number	10
e-ISSN	17518792
Issue Number	Issue 3, Mar (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/10/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2015.0356
Journal	IET Radar, Sonar & Navigation
Publisher Date	2016-03-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Coordinate Descend Method Doppler Radar Error Correction High-resolution Inverse Synthetic Aperture Radar Imaging Joint Phase Error Correction Minimum Entropy Method Minimum-entropy Optimisation Optimisation Optimisation Technique Quasi-Newton Solver Radar Equipment Radar Imaging Range-variant Phase Error Rotational Motion Rotational Phase Error Corrections Signal Processing And Detection Synthetic Aperture Radar System And Application Time-variant Doppler Modulation Translational Phase Error Corrections
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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