CHANGE DETECTION USING POLARIMETRIC L BAND SYNTHETIC APERTURE RADAR DATA

被引：0
|
作者：
Reis, Mariane S. [1 ]
Sant'Anna, Sidnei J. S. [1 ]
Pantaleao, Eliana [2 ]
机构：
[1] Brazilian Natl Inst Space Res, Sao Jose Dos Campos, SP, Brazil
[2] Univ Fed Uberlandia, Patos De Minas, MG, Brazil
来源：
2017 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2017年
关键词：
SAR; change detection; polarimetric decomposition; L band;
D O I：
暂无
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Synthetic Aperture Radar (SAR) data is very important to land cover change detection, mainly in areas of tropical forests that are constantly under cloud cover. In this study, six features extracted from two L band SAR full-polarimetric images were evaluated for region based binary change detection in a region within the Brazilian Amazon, in the years of 2006 and 2009. These features were the intensities from polarizations HH, HV and VV and the three components from Freeman-Durden polarimetric decomposition. The best results were obtained by HV intensity and the volume and double-bounce scattering components from Freeman-Durden polarimetric decomposition. Visual analysis of data indicates the volume scattering component as to better represent changes in the land cover. This feature also appears to be less sensitive to noise than the other components from the polarimetric decomposition. However, since full-polarimetric data is still limited in many areas within the Brazilian Amazon, the use of HV intensity is recommended, if only polarized data is available.
引用
收藏
页码：5354 / 5357
页数：4
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