J
James R. Wang
Researcher at Goddard Space Flight Center
Publications - 76
Citations - 5631
James R. Wang is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Radiometer & Brightness temperature. The author has an hindex of 34, co-authored 76 publications receiving 5285 citations. Previous affiliations of James R. Wang include National Oceanic and Atmospheric Administration.
Papers
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Journal ArticleDOI
An Empirical Model for the Complex Dielectric Permittivity of Soils as a Function of Water Content
James R. Wang,Thomas J. Schmugge +1 more
TL;DR: In this paper, a simple empirical model was proposed to describe the dielectric behavior of the soil-water mixtures and the model employed the mixing of either the Dielectric constants or the refraction indices of ice, water, rock and air, and treated the transition moisture value as an adjustable parameter.
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A model for microwave emission from vegetation-covered fields
TL;DR: In this article, a radiative transfer model was used to simulate the vegetation as a uniform canopy with a constant temperature, over a moist soil which emits polarized microwave radiation, over fields covered with grass, soybean and corn.
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Estimation of bare surface soil moisture and surface roughness parameter using L-band SAR image data
TL;DR: Application of the inversion algorithm to the co-polarized measurements of both AIRSAR and SIR-C resulted in estimated values of soil moisture and roughness parameter for bare and short-vegetated fields that compared favorably with those sampled on the ground.
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Remote sensing of soil moisture content over bare field at 1.4 GHz frequency
James R. Wang,B. J. Choudhury +1 more
TL;DR: In this article, an algorithm for estimating moisture content of a bare soil from the observed brightness temperature at 1.4 GHz is discussed and applied to a limited data base, based on a radiative transfer model calculation, with some modifications to take into account the effect of surface roughness.
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Passive microwave sensing of soil moisture under vegetation canopies
TL;DR: In this article, a quantitative technique for isolating the effect of vegetation cover on the ability of passive microwave radiometers to detect changes in near-surface soil moisture was developed using a theoretical model as the basis of a parametric approach.