NDLI: Effect of Apodization on SAR Image Understanding

Content Provider	IEEE Xplore Digital Library
Author	Pastina, D. Colone, F. Lombardo, P.
Copyright Year	1980
Abstract	This paper investigates the effect of apodization on the statistical properties of synthetic aperture radar (SAR) images and its impact on the capability of extracting information from homogeneous regions of apodized SAR images. The statistical model for the pixel complex amplitude of the apodized image is derived in terms of both probability density function and statistical moments. Knowledge of the statistical properties is then used to develop appropriate schemes for parameter estimation and supervised classification of homogeneous regions with different radar cross sections in apodized SAR images. The performance analysis shows that the new techniques (properly derived for the apodized case) provide information extraction capabilities only slightly worse than those provided by the conventional techniques applied to the nonapodized case. This allows us to conclude that the use of nonlinear apodization yields sidelobe level reduction and main lobe resolution preservation that can be traded with the small losses above. A full characterization of the estimation and classification performance of these new techniques shows that nonlinear apodization globally introduces a performance degradation comparable to a reduction of the number of looks of a factor of 1.455 for a homogeneous region.
Sponsorship	IEEE Geoscience and Remote Sensing Society IEEE URSI
Starting Page	3533
Ending Page	3551
Page Count	19
File Size	2049528
File Format	PDF
ISSN	01962892
Volume Number	45
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Synthetic aperture radar Data mining Parameter estimation Spaceborne radar Spatial resolution Bandwidth Probability density function Radar imaging Speckle Pixel synthetic aperture radar (SAR) Image analysis image classification radar resolution sidelobe suppression
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Electrical and Electronic Engineering

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

Enhanced resolution in SAR/ISAR imaging using iterative sidelobe apodization

Coherency Matrix Estimation of Heterogeneous Clutter in High-Resolution Polarimetric SAR Images

Autobinomial Model for SAR Image Despeckling and Information Extraction

Spatially Variant Apodization for Squinted Synthetic Aperture Radar Images

Improved Sigma Filter for Speckle Filtering of SAR Imagery

Supervised classification of K-distributed SAR images of natural targets and probability of error estimation

Unsupervised Synthetic Aperture Radar Image Segmentation Using Fisher Distributions

A SAR sidelobe suppression algorithm based on modified spatially variant apodization

A Two-Dimensional Bandwidth Extrapolation Technique for Polarimetric Synthetic Aperture Radar Images

Effect of Apodization on SAR Image Understanding

Similar Documents

Enhanced resolution in SAR/ISAR imaging using iterative sidelobe apodization

Coherency Matrix Estimation of Heterogeneous Clutter in High-Resolution Polarimetric SAR Images

Autobinomial Model for SAR Image Despeckling and Information Extraction

Spatially Variant Apodization for Squinted Synthetic Aperture Radar Images

Improved Sigma Filter for Speckle Filtering of SAR Imagery

Supervised classification of K-distributed SAR images of natural targets and probability of error estimation

Unsupervised Synthetic Aperture Radar Image Segmentation Using Fisher Distributions

A SAR sidelobe suppression algorithm based on modified spatially variant apodization

A Two-Dimensional Bandwidth Extrapolation Technique for Polarimetric Synthetic Aperture Radar Images

Effect of Apodization on SAR Image Understanding