NDLI: Novel sparse apertures ISAR imaging algorithm via the TLS-ESPRIT technique

Content Provider	IET Digital Library
Author	Ji, Bingren Zhao, Bin Wang, Yong Xu, Rongqing Yeo, Tat Soon
Abstract	The prevalent imaging method in inverse synthetic aperture radar (ISAR) system is range-Doppler (RD) method, which is implemented by the fast Fourier transformation (FFT). FFT is computationally efficient, but it comes with a price – the problems of wide main-lobes and high side-lobes, especially under the sparse apertures condition. In addition, the resolution of RD method is determined by the radar parameters, which poses limitation to super-resolution imaging, multi-tasking and cognitive reconfigurable applications. In this study, the authors propose a novel super-resolution ISAR imaging method based on the total least squares-estimation of signal parameters via rotational invariance technique (TLS-ESPRIT). The locations and intensities of the scatterers are obtained by employing the ESPRIT algorithm and the least squares technique. Then the ISAR image is formulated, having circumvented all of the above-mentioned limitations. Experiments based on simulated and real measured data validate the effectiveness of the proposed method.
Starting Page	852
Ending Page	859
Page Count	8
ISSN	17518784
Volume Number	14
e-ISSN	17518792
Issue Number	Issue 6, Jun (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/14/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2019.0564
Journal	IET Radar, Sonar & Navigation
Publisher Date	2020-02-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cognitive Reconfigurable Application ESPRIT Algorithm Fast Fourier Transform Fast Fourier Transformation FFT High Side-lobes Image Resolution Integral Transforms Interpolation And Function Approximation Inverse Synthetic Aperture Radar System ISAR Image Least Squares Approximation Least-squares Technique Novel Sparse Apertures ISAR Imaging Algorithm Novel Super-resolution ISAR Numerical Analysis Optical, Image And Video Signal Processing Prevalent Imaging Method Radar Equipment Radar Imaging Radar Parameter Range-Doppler Method RD Method Rotational Invariance Technique Signal Parameter Sparse Apertures Condition Super-resolution Imaging Synthetic Aperture Radar System And Application TLS-ESPRIT Technique Wide Main-lobes
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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