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Paper Abstract and Keywords
Presentation 2014-10-23 16:20
Combination of Entropy and Coherence of HH/VV-Polarimetric SAR Data for Improvement of Target Detection in the Sea
Kazuo Ouchi, Chan-Su Yang (KIOST) SANE2014-90
Abstract (in Japanese) (See Japanese page) 
(in English) It has been known that the entropy of HH- and VV-polarization synthetic aperture radar (SAR) data is almost equivalent to that derived from quad-polarization data, and that it improves the accuracy of detecting underwater marine cultivation nets. The principle is based on small entropy values of surface scattering from the open sea surface and large values from the dominant random system noise due to little backscatter from the smooth surface above underwater cultivation nets. The same principle can be applied to ship detection, since the entropy is large for multiple scattering from ships against small entropy of the background sea surface. Further, the HH- and VV-polarization images of ships are not correlated because of multiple scattering, yielding little coherence; while those of the sea surface are well correlated. This property can also be used to enhance the ability of ship detection. The present paper examines the ship detection accuracy by comparing the dual-polarization amplitude images, entropy, coherence, and the combinations of entropy and coherence, using TerraSAR-X and Advanced Land Observing Satellite (ALOS) - Phased-Array L-band SAR (PALSAR) images over the Tokyo Bay, Japan.
Keyword (in Japanese) (See Japanese page) 
(in English) Synthetic aperture radar (SAR) / dual-polarization entropy / coherence / target detection / ships / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 264, SANE2014-90, pp. 145-150, Oct. 2014.
Paper # SANE2014-90 
Date of Issue 2014-10-15 (SANE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SANE  
Conference Date 2014-10-22 - 2014-10-24 
Place (in Japanese) (See Japanese page) 
Place (in English) Ramada Plaza Melaka, Malacca, Malaysia 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ICSANE 2014 (International Conference on Space, Aeronautical and Navigational Electronics) 
Paper Information
Registration To SANE 
Conference Code 2014-10-SANE 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Combination of Entropy and Coherence of HH/VV-Polarimetric SAR Data for Improvement of Target Detection in the Sea 
Sub Title (in English)  
Keyword(1) Synthetic aperture radar (SAR)  
Keyword(2) dual-polarization entropy  
Keyword(3) coherence  
Keyword(4) target detection  
Keyword(5) ships  
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1st Author's Name Kazuo Ouchi  
1st Author's Affiliation Korea Institute of Ocean Science and Technology (KIOST)
2nd Author's Name Chan-Su Yang  
2nd Author's Affiliation Korea Institute of Ocean Science and Technology (KIOST)
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Speaker Author-1 
Date Time 2014-10-23 16:20:00 
Presentation Time 20 minutes 
Registration for SANE 
Paper # SANE2014-90 
Volume (vol) vol.114 
Number (no) no.264 
Page pp.145-150 
#Pages 6 
Date of Issue 2014-10-15 (SANE) 

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