Jiancheng Shi
University of California, Berkeley
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Publication
Featured researches published by Jiancheng Shi.
international geoscience and remote sensing symposium | 2002
Takeo Tadono; K. Fukami; Jiancheng Shi
Develops an algorithm for estimating snow parameter distributions using synthetic aperture radar (SAR) images. The study area is a part of the Hokuriku District of Japan that is well known for having wet snow from the beginning of the winter season. We develop an algorithm to estimate snow density and roughness distributions using RADARSAT images acquired in February. Furthermore, we show the possibility of inferring snow depths from combined parameters estimated with an L-band SAR image.
international geoscience and remote sensing symposium | 2001
Takeo Tadono; K. Fukami; Jiancheng Shi
The objective of this study is to develop an algorithm for estimating snow parameter distributions using multi-temporal synthetic aperture radar (SAR) data and a numerical scattering model. Simultaneous Radarsat SAR observations were carried out during the two winter seasons The study area is a part of the Hokuriku District of Japan that is well known for having wet snow from the beginning of the winter season. We compared the results of simulated backscattering coefficients with the ground-truth data and observed backscattering coefficients. Since the agreement was good, we demonstrated the possibility of estimating roughness distributions of soil surface using images acquired just before the snowfall with an assumption. Furthermore, we estimated the distributions of snow depth and roughness using images after a snowfall and estimated soil roughness distributions.
international geoscience and remote sensing symposium | 2000
Takeo Tadono; Muhtar Qong; Hiruyuki Wakabayashi; Masanobu Shimada; Tatsuharu Kobayashi; Jiancheng Shi
The goal of this study is to develop an algorithm for estimating the surface soil moisture and surface roughness using polarimetric synthetic aperture radar (SAR) data. In this study, an algorithm was applied to polarimetric airborne SAR data to estimate distributions of surface soil moisture and roughness. To validate the estimated soil moisture, the authors simultaneously conducted an experiment in October 1999 in Tsukuba, Ibaragi Pref., Japan. Surface soil moisture was obtained by the time-domain reflectometry (TDR) method, and the horizontal profiles of the land surface height were measured by a comb-style instrument for calculating the surface roughness parameters in test sites. Because the problem is site-specific and depends upon the measurement accuracy of both the ground truth data, and the SAR system including speckle noise, the comparison results did not agree well with measured and inferred soil moisture.
Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space | 2000
Takeo Tadono; Muhtar Qong; Hiroyuki Wakabayashi; Masanobu Shimada; Jiancheng Shi
The goal of this study is to develop an algorithm for estimating the surface soil moisture and surface roughness using polarimetric Synthetic Aperture Radar (SAR) data. In this study, an algorithm was applied to polarimetric airborne SAR data to estimate distributions of surface soil moisture and roughness. To validate the estimated soil moisture, we simultaneously conducted an experiment in October 1999 in Tsukuba Science City, Ibaragi Prefecture of Japan. Surface soil moisture was obtained by the Time- Domain Reflectometry (TDR) method, and the horizontal profiles of the land surface height were measured by a comb- style instrument for calculating the surface roughness parameters in test sites. Because the problem is site- specific and depends upon the measurement accuracy of both the ground truth data, the SAR system including speckle noise, and the effects of vegetation and artificial constructions, such as buildings, houses, roads, and roadside trees, the comparison results did not agree well with measured and inferred soil moisture.
Journal of hydroscience and hydraulic engineering | 2000
Takeo Tadono; Toshio Koike; Jiancheng Shi; Yongjian Ding; Xianzhang Chen; Shaoling Wang; Meixue Yang
Journal of Japan Society of Civil Engineers | 2012
Kentaro Aida; Toshio Koike; Jiancheng Shi
Journal of Japan Society of Civil Engineers | 2011
Kentaro Aida; Toshio Koike; Jiancheng Shi
Doboku Gakkai Ronbunshuu B | 2002
Takeo Tadono; Kazuhiko Fukami; Housho Kodama; Jiancheng Shi
Doboku Gakkai Ronbunshuu B | 2001
Takeo Tadono; Kazuhiko Fukami; Housho Kodama; Jiancheng Shi
Proceedings of SPIE, the International Society for Optical Engineering | 2000
Takeo Tadono; Muhtar Qong; Hiroyuki Wakabayashi; Masanobu Shimada; Jiancheng Shi
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National Institute of Information and Communications Technology
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