NDLI: SAR imaging using a modern 2D spectral estimation method

Content Provider	IEEE Xplore Digital Library
Author	Yadin, E. Olmar, D. Oron, O. Nathansohn, R.
Copyright Year	2008
Description	Author affiliation: Elta Systerms Ltd., Ashdod (Yadin, E.; Olmar, D.; Oron, O.; Nathansohn, R.)
Abstract	Modern 2D spectral estimation techniques can be used for SAR imaging. The aim of those techniques is to improve the SAR image quality at the expense of an additional processing load. This paper focuses on applying the 2D minimum variance power spectrum estimation method (MVM) to SAR raw data. MVM process improves the image ISLR and reduces speckle noise. MVM was found to be particularly useful in SAR imaging geometries involving steep depression angles. Such geometries are characterized by high clutter interference, leading to poor contrasts between targets and the surrounding clutter. MVM process enhances the target to background contrast in such images. Parallel MVM process was demonstrated at Elta on a processing array. MVM images of 8000 by 8000 pixels are produced there in few minutes. Examples of MVM images are given and compared to conventional FFT based SAR images. Quantitative measures for ISLR improvement and speckle smoothening are given.
Starting Page	1
Ending Page	6
File Size	1969112
Page Count	6
File Format	PDF
ISBN	9781424415380
ISSN	10975659
DOI	10.1109/RADAR.2008.4720775
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-26
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar polarimetry Synthetic aperture radar Geometry Speckle Clutter Pixel Radar scattering Image quality Spectral analysis Noise reduction Spectral Estimation Techniques Synthetic Aperture Radar
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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