NDLI: Application of optimal FrFT order for improving the azimuth resolution of range Doppler imaging algorithm

Content Provider	IET Digital Library
Author	Wang, Zhenli Wang, Qun
Abstract	The traditional range Doppler (RD) imaging algorithm has become the most intuitive and classical method in synthetic aperture radar (SAR) imaging processing because of its easy implementation and high processing efficiency. However, owing to the poor quality of the image produced by RD algorithm, this traditional imaging method is growing increasingly unable to meet practical needs. In an effort to solve the problem of poor azimuth imaging quality, this study proposes a high-resolution RD azimuth imaging algorithm. The expression of the optimal order of the SAR azimuth signals using fractional Fourier transform (FrFT) is derived in detail herein. A theoretical analysis shows that this optimal order is unique and depends on the azimuth imaging parameters. The experimental results based on airborne SAR simulation data and spaceborne SAR measurement data indicate that the azimuth resolution of the proposed algorithm is improved by 31.6 or 46.8% as against that of the traditional RD algorithm, whereas the peak side lobe ratio (PSLR) and integrated side lobe ratio (ISLR) values obtained via the proposed algorithm are approximately equivalent to those obtained via the traditional RD algorithm.
Starting Page	789
Ending Page	793
Page Count	5
ISSN	17519659
Volume Number	14
e-ISSN	17519667
Issue Number	Issue 4, Mar (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ipr/14/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2019.1065
Journal	IET Image Processing
Publisher Date	2019-11-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Airborne Radar Airborne SAR Azimuth Imaging Parameter Azimuth Resolution Doppler Radar Fourier Transforms Fractional Fourier Transform High-resolution RD Azimuth Imaging Algorithm Image Resolution Integral Transforms Optical, Image And Video Signal Processing Optimal FrFT Order Radar Equipment Radar Imaging Range Doppler Imaging Algorithm SAR Azimuth Signal Spaceborne Radar Spaceborne SAR Measurement Data Synthetic Aperture Radar Synthetic Aperture Radar Image System And Application
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

The fractional Fourier transform and its application to high resolution SAR imaging

Fractional Fourier Transform for moving target detection and location in spaceborne SAR

3D velocity estimation based on FrFT for multi-static SAR

Range Doppler SAR processing using the Fractional Fourier Transform

A novel SAR imaging processing method based on fractional fourier transform

Advanced range migration algorithm for ultra-high resolution spaceborne synthetic aperture radar

A modified RD algorithm for airborne high squint mode SAR imaging

Estimation of Doppler parameters for spaceborne SAR based on fractional Fourier transform

Refocusing of ship signatures and Azimuth speed estimation based on FRFT and SAR SLC imagery

Application of optimal FrFT order for improving the azimuth resolution of range Doppler imaging algorithm

Similar Documents

The fractional Fourier transform and its application to high resolution SAR imaging

Fractional Fourier Transform for moving target detection and location in spaceborne SAR

3D velocity estimation based on FrFT for multi-static SAR

Range Doppler SAR processing using the Fractional Fourier Transform

A novel SAR imaging processing method based on fractional fourier transform

Advanced range migration algorithm for ultra-high resolution spaceborne synthetic aperture radar

A modified RD algorithm for airborne high squint mode SAR imaging

Estimation of Doppler parameters for spaceborne SAR based on fractional Fourier transform

Refocusing of ship signatures and Azimuth speed estimation based on FRFT and SAR SLC imagery

Application of optimal FrFT order for improving the azimuth resolution of range Doppler imaging algorithm