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http://dx.doi.org/10.7780/kjrs.2018.34.6.1.10

Reflection Symmetry of PALSAR Quad-Pol Imagery in the Amazon Rainforest  

Kim, Jae-Hun (Department of Earth System Sciences, Yonsei University)
Yoon, Sun Yong (Department of Earth System Sciences, Yonsei University)
Won, Joong-Sun (Department of Earth System Sciences, Yonsei University)
Publication Information
Korean Journal of Remote Sensing / v.34, no.6_1, 2018 , pp. 969-979 More about this Journal
Abstract
This paper presents reflection symmetry of polarimetric SAR over the Amazon rainforest in terms of correlation coefficients between the pairs of HH- and HV-pol and VV- and VH-pol data by ALOS PALSAR. The reflection symmetry is defined as a non-zero correlation between HH- and HV-pol and VV- and VH-pol over natural distributed targets, and is a fundamental assumption for cross-talk calibration coefficient computation and for three-component decomposition for polarimetric SAR data. The Amazon rainforest is especially one of the common global reference sites for the reflection symmetry. The correlation coefficients for the pairs of reflection symmetry obtained in this study range from 0.018 to 0.097. The results imply that there exists a non-negligible dependency between co-pol and cross-pol in the distributed natural targets, and consequently the non-zero correlation must be considered as a potential contribution to errors of spaceborne SAR polarimetry to some extent.
Keywords
SAR; polarimetry; reflection symmetry; Amazon rainforest; ALOS;
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Times Cited By KSCI : 1  (Citation Analysis)
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