Search Results - "Gasiewski, Albin"

Endfire Synthetic Aperture Radar for a Cryobot for Exploration of Icy Moons and Terrestrial Glaciers by Pradhan, Omkar, Gasiewski, Albin J.

“…An endfire synthetic aperture radar (SAR) for use on a cylindrical ice-penetrating cryobot is presented. The SAR facilitates obstacle detection and mapping…”
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Fast 3-D Inhomogeneous Radiative Transfer Model Using a Planar-Stratified Forward Algorithm and Horizontal Perturbation Series by Zhang, Kun, Gasiewski, Albin J.

“…A horizontally inhomogeneous unified microwave radiative transfer (HI-UMRT) model is presented to study the 3-D effects of the horizontal inhomogeneous clouds…”
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Antenna Design and Prelaunch Performance of a Low-Cost 118.75 GHz Temperature Sounding CubeSat Radiometer With 3-D-Printed Corrugated Feed and Offset Reflector Optics by Periasamy, Lavanya, Gasiewski, Albin J.

“…This article describes the design and prelaunch performance of the antenna subsystem of the low-cost 118.75 GHz temperature sounding radiometer payload used in…”
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A Physically Based Two-Scale Ocean Surface Emissivity Model Tuned to WindSat and SSM/I Polarimetric Brightness Temperatures by Lee, Sang-Moo, Gasiewski, Albin J.

“…A two-scale ocean surface emissivity model tuned to WindSat and Special Sensor Microwave/Imager (SSM/I) polarimetric brightness temperatures for general…”
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High Spatial Resolution Soil Moisture Mapping Using a Lobe Differencing Correlation Radiometer on a Small Unmanned Aerial System by Dai, Eryan, Gasiewski, Albin J., Venkitasubramony, Aravind, Stachura, Maciej, Elston, Jack

“…A persistent challenge in the measurement of soil moisture from satellites stems from the inherently low spatial resolution using active or passive system. The…”
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Measurements from an Open Path Terahertz Transmissometer Designed for Deterministic and Stochastic Propagation Studies by Pradhan, Omkar, Scally, Lawrence J., Gasiewski, Albin J., Gorashi, Ali, Pizio, Dean, Kraft, David

“…The design of and attenuation measurements from an open-path terahertz transmissometer system operating near the 325 GHz water vapor absorption line is…”
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Millimeter-Wave SiGe Radiometer Front End With Transformer-Based Dicke Switch and On-Chip Calibration Noise Source by Frounchi, Milad, Alizadeh, Amirreza, Ying, Hanbin, Coen, Christopher T., Gasiewski, Albin J., Cressler, John D.

“…We present a co-designed Dicke switch and low-noise amplifier (LNA) in which the switch incorporates a transformer-based topology and serves as the input…”
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Influences of Two-Scale Roughness Parameters on the Ocean Surface Emissivity From Satellite Passive Microwave Measurements by Lee, Sang-Moo, Gasiewski, Albin J., Sohn, Byung-Ju

“…In this study, a method for estimating two-scale roughness influences on the ocean surface emissivity is developed by solving a simplified two-scale ocean…”
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Estimation of sea ice thickness distributions through the combination of snow depth and satellite laser altimetry data by Kurtz, Nathan T., Markus, Thorsten, Cavalieri, Donald J., Sparling, Lynn C., Krabill, William B., Gasiewski, Albin J., Sonntag, John G.

“…Combinations of sea ice freeboard and snow depth measurements from satellite data have the potential to provide a means to derive global sea ice thickness…”
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Software Defined Radio Injection-Locking using a GPS signal for multichannel coherent receivers by Some, Evariste, Gasiewski, Albin J.

“…This paper explores the potential benefits of combining the use of injection-locking techniques with GPS signals as a common clock source when applied to a…”
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Estimation of Arctic Basin-Scale Sea Ice Thickness From Satellite Passive Microwave Measurements by Lee, Sang-Moo, Meier, Walter N., Sohn, Byung-Ju, Shi, Hoyeon, Gasiewski, Albin J.

“…Retrievals of sea ice thickness from passive microwave measurements have been limited to thin ice because microwaves penetrate at most the upper 50 cm of sea…”
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Multiband Simulations of Multistream Polarimetric Microwave Radiances Over Aspherical Hydrometeors by Zhang, Kun, Gasiewski, Albin J.

“…A numerical precision assessment and simulation results of the Unified Microwave Radiative Transfer (UMRT) model incorporating aspherical frozen hydrometeors…”
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Precision Soil Moisture Monitoring With Passive Microwave L-Band UAS Mapping by Kim, Kyung Y., Zhu, Ziyue, Zhang, Runze, Fang, Bin, Cosh, Michael H., Russ, Andrew L., Dai, Eryan, Elston, Jack, Stachura, Maciej, Gasiewski, Albin J., Lakshmi, Venkataraman

“…Although satellite-based soil moisture products are useful at regional and global scales, they do not meet the needs of users who require high-resolution…”
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Estimation of Arctic Winter Snow Depth, Sea Ice Thickness and Bulk Density, and Ice Freeboard by Combining CryoSat-2, AVHRR, and AMSR Measurements by Shi, Hoyeon, Lee, Sang-Moo, Sohn, Byung-Ju, Gasiewski, Albin J., Meier, Walter N., Dybkjar, Gorm, Kim, Sang-Woo

“…Information on snow depth on sea ice and bulk sea ice density is required to convert CryoSat-2 radar freeboard (<inline-formula> <tex-math…”
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Electromagnetic Analysis of Radiometer Calibration Targets Using Dispersive 3D FDTD by Sandeep, S., Gasiewski, A. J.

“…Accurate electromagnetic and thermal analysis is essential for designing wideband radiometer calibration targets as well as for understanding the…”
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Soil moisture mapping and AMSR-E validation using the PSR in SMEX02 by Bindlish, Rajat, Jackson, Thomas J., Gasiewski, Albin J., Klein, Marian, Njoku, Eni G.

“…Field experiments (SMEX02) were conducted to evaluate the effects of dense agricultural crop conditions on soil moisture retrieval using passive microwave…”
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A Unified Microwave Radiative Transfer Model for General Planar Stratified Media: Slab Formulation by Miao Tian, Gasiewski, A. J.

“…A unified microwave radiative transfer (UMRT) model is presented for computing the thermal radiation emitted from any geophysical medium composed of planar…”
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Temperature and Humidity Profiling in the Arctic Using Ground-Based Millimeter-Wave Radiometry and 1DVAR by Cimini, Domenico, Westwater, Ed R., Gasiewski, Albin J.

“…A 1-D variational (1DVAR) retrieval technique has been developed for obtaining temperature and humidity profiles from observations of the Ground-Based Scanning…”
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Fast Jacobian Mie Library for Terrestrial Hydrometeors by Sandeep, S., Gasiewski, A. J.

“…This paper presents an approach for the fast accurate computation of several useful Mie-based parameters for homogeneous, spherical, liquid water, and ice…”
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A Comparison of Snow Depth on Sea Ice Retrievals Using Airborne Altimeters and an AMSR-E Simulator by Cavalieri, D. J., Markus, T., Ivanoff, A., Miller, J. A., Brucker, L., Sturm, M., Maslanik, J. A., Heinrichs, J. F., Gasiewski, A. J., Leuschen, C., Krabill, W., Sonntag, J.

“…A comparison of snow depths on sea ice was made using airborne altimeters and an Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E)…”
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