Paper Info
Title
Non-Bragg Scattering Contributions To The Dual-Polarized Sar Imaging Of Hurricane Earl
Abstract
The Bragg scattering theory does not explain the cross-polarized (VH or HV) normalized radar-backscatter cross-sections (NRCSs) from the ocean surface very well. The difference lies in the non-Bragg scatterings mechanisms including specular reflection and quasi-specular reflection or diffraction on the sharp edges of wave breaking. The specular reflection is a function of radar incidence angle and is negligible for the intermediate incidence angle. The quasi-specular reflection and diffraction on the sharp edges of wave breaking is a function of incidence angle, wind speed and direction. In this study, we adopt the C-band Cross-polarization Ocean (C-2PO) model as the total backscatter from the ocean surface, and assume the non-Bragg scattering as the differences between NRCSs simulated by C-2PO model and composite Bragg model. And a non-Bragg scattering ratio is suggested. With the collocated datasets of wind speeds, wind directions, measured by airborne SFMR and NRCSs from SAR, the suggested non-Bragg scattering ratio is validated.
Year
DOI
Venue
2016
10.1109/IGARSS.2016.7729578
2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
Keywords
Field
DocType
Non-Bragg Scattering, Sea Surface Wind, SAR
Breaking wave,Wind speed,Computer science,Backscatter,Remote sensing,Specular reflection,Optics,Bragg's law,Wind direction,Scattering,Diffraction
Conference
ISSN
Citations 
PageRank 
2153-6996
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Guosheng Zhang100.34
Xiaofeng Li233679.94
Biao Zhang39723.66
William Perrie410527.21