Sea ice classification using synthetic aperture radar
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Authors
Garcia, Frank W., Jr.
Subjects
Synthetic Aperture Radar
Sea Ice Classification
Marginal Ice Zone
Gray Level Co-Occurrence Matrices
Texture Statistics
Univariate Statistics
MIZEX '87 SAR Data
Sea Ice Classification
Marginal Ice Zone
Gray Level Co-Occurrence Matrices
Texture Statistics
Univariate Statistics
MIZEX '87 SAR Data
Advisors
Nystuen, Jeffrey A.
Bourke, Robert H.
Date of Issue
1990-06
Date
June 1990
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
This study employs Synthetic Aperture Radar (SAR) imagery from the Marginal Ice Zone Experiment (MIZEX) 1987 to identify an optimal set of statistical descriptors that accurately classify three types of ice (first-year, multiyear, odden) and open water. Two groups of statistics, univariate and texture, are compared and contrasted with respect to their skill in classifying the ice types and open water. Individual statistical descriptors are subjected to principal component analysis and discriminant analysis. Principal component analysis was of little use in understanding features of each ice and open water group. Discriminant analysis was valuable in identifying which statistics held the most power. When combined, univariate and texture statistics classified the groups with 89.5% accuracy, univariate alone with 86.8% accuracy and texture alone with 75.4% accuracy. Range and inertia were the strongest univariate and texture discriminators with 74.6% and 50.8% accuracy, respectively. Despite the use of a non-calibrated SAR, univariate statistics were able to classify the images with greater accuracy than texture statistics.
Type
Thesis
Description
Series/Report No
Department
Oceanography
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
xii, 102 p. ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.