Brewster Angle Damping Observed in the TerraSAR-X Synthetic Aperture Radar Images of Man-Made Targets
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Title
- Brewster Angle Damping Observed in the TerraSAR-X Synthetic Aperture Radar Images of Man-Made Targets
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Author(s)
- Ouchi, Kazuo; Yang, Chan-Su
- KIOST Author(s)
- Yang, Chan Su(양찬수)
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Alternative Author(s)
- 양찬수
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Publication Year
- 2018-04
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Abstract
- This letter shows the phenomena of Brewster angle damping and its implication observed in the synthetic aperture radar (SAR) images of concrete constructions, such as a bridge and seawalls over the sea. The Fresnel reflection coefficient of concrete material is close to zero at the Brewster angle for X-band V-polarization microwave. The TerraSAR-X images of Tokyo Bay, Japan, at small incidence angles (20.1 degrees-21.4 degrees) showed strong double-bounce reflection between the sea surface and coastal structure with HH-polarization, whereas very little radar backscatter was observed with VV-polarization. The same little radar backscatter was seen in the images of concrete walls on ground and swamp areas covered with reeds. This effect is illustrated with HH/VV intensity and phase difference images, and ground survey data; its implication is also suggested for a better understanding of polarimetric SAR images.
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ISSN
- 1545-598X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/989
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DOI
- 10.1109/LGRS.2017.2788502
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Bibliographic Citation
- IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, v.15, no.4, pp.532 - 536, 2018
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Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Subject
- POLARIMETRIC SAR DATA; SCATTERING MODEL; BAND; DECOMPOSITION; WATER
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Keywords
- Brewster angle; concrete walls; double-bounce reflection; Fresnel reflection coefficients; sea surface; synthetic aperture radar (SAR)
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Type
- Article
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Language
- English
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Document Type
- Article
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