Search Results - "Lang, R.H."

Soil Moisture Retrieval During a Corn Growth Cycle Using L-Band (1.6 GHz) Radar Observations by Joseph, A.T., van der Velde, R., O'Neill, P.E., Lang, R.H., Gish, T.

“…This paper reports on the retrieval of soil moisture from dual-polarized L-band (1.6 GHz) radar observations acquired at view angles of 15deg, 35deg, and…”
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Comparison of Surface and Volume Currents Models for Electromagnetic Scattering From Finite Dielectric Cylinders by de Matthaeis, P., Lang, R.H.

“…The accuracy of modeling plane wave scattering by dielectric cylinders of finite length and circular cross section for microwave remote sensing applications is…”
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L-Band Radar Estimation of Forest Attenuation for Active/Passive Soil Moisture Inversion by Kurum, Mehmet, Lang, Roger H, O'Neill, Peggy E, Joseph, Alicia T, Jackson, Thomas J, Cosh, Michael H

“…In the radiometric sensing of soil moisture through a forest canopy, knowledge of canopy attenuation is required. Active sensors have the potential of…”
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Microwave link dual-wavelength measurements of path-average attenuation for the estimation of drop size distributions and rainfall by Rincon, R.F., Lang, R.H.

“…Microwave attenuation measurements at 25 and 38 GHz made on a 2.3-km microwave link are employed to estimate drop size distributions (DSD), rainfall rate, and…”
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Scattering, transmission, and absorption by a rough resistive sheet - E polarization by Jacobs, E.L., Lang, R.H.

“…Motivated by the use of thin conducting textiles in absorbers, the interaction of electromagnetic waves with a rough resistive sheet is examined. Expressions…”
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Microwave backscattering and emission model for grass canopies by Saatchi, S.S., Le Vine, D.M., Lang, R.H.

“…Microwave radar and radiometer measurements of grasslands indicate a substantial reduction in sensor sensitivity to soil moisture in the presence of a thatch…”
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A successive scattering methodology with application to two cylinders in the Fresnel region of each other by Hooker, R.J., Lang, R.H.

“…We present an efficient approach to compute the second-order scattering of an electromagnetic wave by two discrete scatterers in proximity to each other. Such…”
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A Simplified Analytical Model to Predict the Specific Attenuation of a Tree Canopy by Torrico, Saul A., Lang, Roger H.

“…A simplified analytical model is presented to predict the specific attenuation for propagation through a tree canopy in a residential environment for…”
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Modeling tree effects on path loss in a residential environment by Torrico, S.A., Bertoni, H.L., Lang, R.H.

“…A theoretical model is proposed to compute the path loss in a vegetated residential environment, with particular application to mobile radio systems. As in the…”
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K-distribution for multi-look processed polarimetric SAR imagery by Lee, J.S., Schuler, D.L., Lang, R.H., Ranson, K.J.

“…A K-distribution has been developed to characterize the statistical properties of multi-look processed polarimetric SAR data. The probability density function…”
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A microwave scattering model for layered vegetation by Karam, M.A., Fung, A.K., Lang, R.H., Chauhan, N.S.

“…A microwave scattering model was developed for layered vegetation based on an iterative solution of the radiative transfer equation up to the second order to…”
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Microwave permittivity measurements of two conifers by Franchois, A., Pineiro, Y., Lang, R.H.

“…Complex permittivity spatial distributions of two conifers, a 5.0-m high Caucasian fir (Abies normanniana) and a 1.9-m high spruce (Picea omorika), have been…”
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Radar modeling of a boreal forest by Chauhan, N.S., Lang, R.H., Ranson, K.J.

“…The authors report on the use of microwave modeling, ground truth, and synthetic aperture radar (SAR) data to investigate the characteristics of forest stands…”
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Discrete scatter model for microwave radar and radiometer response to corn: comparison of theory and data by Chauhan, N.S., Le Vine, D.M., Lang, R.H.

“…As part of the Multisensor Aircraft Campaign, MACHYDRO, two microwave sensors, NASA's Airborne Synthetic Aperture Radar (AIRSAR) and Pushbroom Microwave…”
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Scattering of a Pulsed Beam By a Random Medium Over Ground by Kilic, O., Lang, R.H.

“…Transient response of a random medium to a narrowband short pulse is examined for an aperture antenna overlooking a discrete random medium with a flat surface…”
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Wave propagation in a vegetated residential area using the distorted born approximation and the Fresnel-Kirchhoff approximation by Torrico, S.A., Lang, R.H.

“…A theoretical model is proposed to include the incoherent fields along with the coherent fields to compute the excess loss in a vegetated residential…”
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A discrete interferometric model for a layer of random medium by Seker, S.S., Lang, R.H.

“…This paper presents a discrete interferometric model of random media. The forest is modeled by characterizing tree trunks, branches and leaves with randomly…”
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Simulations of L-band Brightness Temperature of a Quasi-Periodic Corn Canopy by Utku, C., Lang, R.H.

“…The common two parameter `tau-omega' model for emission by vegetation assumes a uniform attenuating canopy with some darkening due to scattering. As a result,…”
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Simulations of L-Band Backscattering from a Quasi- Periodic Corn Canopy by Utku, C., Lang, R.H.

“…Retrieval of soil moisture under corn canopies has been investigated by many researchers and is still a problem that is not fully assessed. Corn is an…”
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Preparation for emergency relief after biological warfare by Steffen, R., Melling, J., Woodall, J.P., Rollin, P.E., Lang, R.H., Lüthy, R., Waldvogel, A.

“…Upon invitation by the World Health Organization during the Gulf War, a task force “Scorpio” independent from the nations involved in the armed conflict was…”
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