Sort by:

• Highly Influential Citations
• Citations
• Acceleration
• Velocity
• Recency

Learn More

A prototype AMSR-E global snow area and snow depth algorithm

• Richard E. Kelly, Alfred T. C. Chang, Leung Tsang, James L. Foster
• IEEE Trans. Geoscience and Remote Sensing
• 2003

A methodologically simple approach to estimate snow depth from spaceborne microwave instruments is described. The scattering signal observed in multifrequency passive microwave data is used to detect… (More)

Using the Special Sensor Microwave Imager to Monitor Surface Wetness

• Alan N. Basist, Claude N. Williams, +5 authors Matthew J. Menne
• 2001

The frequencies flown on the Special Sensor Microwave Imager (SSM/I) are sensitive to liquid water near the earth’s surface. These frequencies are primarily atmospheric window channels, which receive… (More)

Inversion of snow parameters from passive microwave remote sensing measurements by a neural network trained with a multiple scattering model

• Leung Tsang, Zhengxiao Chen, Seho Oh, Robert J. Marks, Alfred T. C. Chang
• IEEE Trans. Geoscience and Remote Sensing
• 1992

The inversion of snow parameters from passive microwave remote sensing measurements is performed with a neural network trained with a dense media multiple scattering model. The basic idea is to use… (More)

Retrieval of snow parameters by iterative inversion of a neural network

• Daniel T. Davis, Zhengxiao Chen, Leung Tsang, Jenq-Neng Hwang, Alfred T. C. Chang
• IEEE Trans. Geoscience and Remote Sensing
• 1993

Effects of snow crystal shape on the scattering of passive microwave radiation

• James L. Foster, Dorothy K. Hall, Alfred T. C. Chang, Albert Rango, W. Wergin, E. Erbe
• IEEE Trans. Geoscience and Remote Sensing
• 1999

In this study, a discrete dipole scattering model is used to measure the passive microwave radiation scattered by snow particles having different shapes and sizes. The model results demonstrate that… (More)

Freshwater Ice Thickness Observations Using Passive Microwave Sensors

• Dorothy K. Hall, James L. Foster, Alfred T. C. Chang, Albert Rango
• IEEE Transactions on Geoscience and Remote…
• 1981

Walden Reservoir, a freshwater lake in north-central Colorado, was overflown six times by a NASA C-130 aircraft between January 1977 and April 1980. The aircraft was equipped with four microwave… (More)

Reflectance of snow measured in situ and from space in sub-Arctic areas in Canada and Alaska

• Dorothy K. Hall, James L. Foster, Alfred T. C. Chang
• IEEE Trans. Geoscience and Remote Sensing
• 1992

Frequency dependence of scattering and extinction of dense media based on three-dimensional simulations of Maxwell's equations with applications to snow

• Chi-Te Chen, Leung Tsang, Jianjun Guo, Alfred T. C. Chang, Kung-Hau Ding
• IEEE Trans. Geoscience and Remote Sensing
• 2003

The frequency dependence of scattering by geophysical media at microwave frequencies is an important topic because multifrequency measurements are used in remote sensing applications. In this paper,… (More)

L-Band Radar Sensing of Soil Moisture

• Alfred T. C. Chang, Susan G. Atwater, Vincent V. Salomonson, John E. Estes, David S. Simonett, M. Leonard Bryan
• IEEE Transactions on Geoscience and Remote…
• 1980

The objectives of this experiment were to assess the performance of an L-band, 25-cm wavelength imaging synthetic aperture radar (SAR) for soil moisture determination, and to study the temporal… (More)

On the estimation of snow depth from microwave radiometric measurements

• James R. Wang, Alfred T. C. Chang, A. K. Sharma
• IEEE Trans. Geoscience and Remote Sensing
• 1992

The multiple-channel microwave radiometric measurements made over Alaska at aircraft (near 90 and 183 GHz) and satellite (at 37 and 85 GHz) altitudes are used to study the effect of atmospheric… (More)

• ‹
• 1
• 2
• ›