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- W3135364808 abstract "We investigate the applicability of the entropy (H)/ alpha (α̅) target decomposition realized by the temporally averaged coherency matrix, called temporal H/(α̅). We apply the temporal H/α̅ to ground-based synthetic aperture radar (GB-SAR) continuous monitoring data to characterize the scattering mechanism temporal change. As a case study, this work demonstrates the application of the temporal H/α̅ technique to landslide monitoring to detect and investigate the temporal scattering mechanism. The study acquired long-term GB-SAR polarimetric data over the postlandslide slope, Minami-Aso, Kumamoto, Japan. The study first investigated the property of the temporal H/α̅ parameters over selected land cover types by comparing it with that derived by spatial averaging (spatial H/α̅) to explain the landslide monitoring results. Also, the rainfall effects on the temporal H/α̅ parameters are demonstrated. The temporal H and α̅ values increase up to 0.07 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>°</sup> and 13.54 <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>°</sup> , respectively, when the rainfall rate is 52.5 mm/h. The time-series analysis of the temporal H/α̅ indicates an obvious temporal transition of the scattering mechanism and a change of the backscattering stationarity when a landslide occurs. The applicability of the temporal H/α̅ for the change-detection is discussed by comparing it with the classical spatial H/α̅ parameters." @default.
- W3135364808 created "2021-03-15" @default.
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- W3135364808 date "2021-01-01" @default.
- W3135364808 modified "2023-10-18" @default.
- W3135364808 title "Temporal <i>H</i>/alpha Target Decomposition for Landslide Monitoring Using Ku-Band GB-SAR Time Series" @default.
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- W3135364808 doi "https://doi.org/10.1109/jstars.2021.3062879" @default.
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