Title :
Evaluation of the influence of the polarimetric calibration process on the H/A/alpha decomposition
Author :
Correia, Antonio Henrique ; Da Costa Freitas, Corina ; Mura, José Claudio
Author_Institution :
Exercito Brasileiro, Diretoria de Servico Geografico - DSG, Brasilia, Brazil
Abstract :
The objective of this article is to evaluate the influence of the cross-talk and channel imbalance calibration on the estimation of the entropy and the alpha images. Few studies can be found in SAR literature concerning the influence of the polarimetric image calibration process on the target decomposition methods and their consequences on the characterization and discrimination of different ground targets. This influence is illustrated here by using a methodology based on an L-band fully polarimetric SAR data acquired by the SIPAM (Amazon Protection System) airborne R99-SAR over two areas of study, located in the Brazilian Amazon Forest and urban area regions.
Keywords :
calibration; entropy; geophysical image processing; image classification; radar polarimetry; remote sensing by radar; synthetic aperture radar; Amazon Protection System; Brazilian Amazon forest; L-band fully polarimetric SAR data; SIPAM; airborne R99-SAR; alpha image entropy estimation; channel imbalance calibration effects; cross talk effects; entropy-anisotropy-alpha angle decomposition; ground target characterization; ground target discrimination; polarimetric calibration effects; polarimetric image calibration process; target decomposition methods; urban area regions; Calibration; Channel estimation; Entropy; Pixel; Remote sensing; Scattering; Urban areas; Airborne radar; Calibration; Radar polarimetry; Synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5651104
