Search Results - "Simpson, J.J"

Three-dimensional FDTD modeling of impulsive ELF propagation about the earth-sphere by Simpson, J.J., Taflove, A.

“…This paper reports the application of an efficient finite-difference time-domain (FDTD) algorithm to model impulsive extremely low frequency (ELF) propagation…”
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A Review of Progress in FDTD Maxwell's Equations Modeling of Impulsive Subionospheric Propagation Below 300 kHz by Simpson, J.J., Taflove, A.

“…Wave propagation at the bottom of the electromagnetic spectrum (below 300 kHz) in the Earth-ionosphere waveguide system has been an interesting and important…”
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Global FDTD Maxwell's Equations Modeling of Electromagnetic Propagation From Currents in the Lithosphere by Simpson, J.J.

“…Electromagnetic wave propagation from electric currents within the Earth's crust is investigated using a three-dimensional finite-difference time-domain (FDTD)…”
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Substrate integrated waveguides optimized for ultrahigh-speed digital interconnects by Simpson, J.J., Taflove, A., Mix, J.A., Heck, H.

“…This paper reports an experimental and computational study of substrate integrated waveguides (SIWs) optimized for use as ultrahigh-speed bandpass waveguiding…”
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Two-dimensional FDTD model of antipodal ELF propagation and Schumann resonance of the Earth by Simpson, J.J., Taflove, A.

“…This article reports the initial application of the finite-difference time-domain (FDTD) method to model extremely low-frequency (ELF) propagation around the…”
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FDTD modeling of a novel ELF Radar for major oil deposits using a three-dimensional geodesic grid of the Earth-ionosphere waveguide by Simpson, J.J., Heikes, R.P., Taflove, A.

“…This paper reports the first application of an optimized geodesic, three-dimensional (3-D) finite-difference time-domain (FDTD) grid to model impulsive,…”
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ELF Radar System Proposed for Localized D-Region Ionospheric Anomalies by Simpson, J.J., Taflove, A.

“…This letter proposes a novel extremely low frequency (ELF) radar for localized D-region (altitude < 95 km) ionospheric anomalies that have been generated by…”
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Computational and experimental study of a microwave electromagnetic bandgap structure with waveguiding defect for potential use as a bandpass wireless interconnect by Simpson, J.J., Taflove, A., Mix, J.A., Heck, H.

“…As clock rates continue to rise, problems with signal integrity, cross-coupling, and radiation may render impractical the baseband metallic interconnects…”
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A novel ELF radar for major oil deposits by Simpson, J.J., Taflove, A.

“…This letter proposes a novel extremely low frequency (ELF) radar for major oil deposits. Using our recently developed whole-Earth electromagnetic wave…”
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Improved estimates of the areal extent of snow cover from AVHRR data by Simpson, J.J., Stitt, J.R., Sienko, M.

“…Satellite data provide the only practical way to obtain the necessary spatial and temporal coverage of areal extent of snow cover required for…”
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A recurrent neural network classifier for improved retrievals of areal extent of snow cover by Simpson, J.J., McIntire, T.J.

“…Accurate detection of areal extent of snow in mountainous regions is important. Areal extent of snow is a useful climatic indicator. Moreover, snow melt is a…”
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Cloud shadow detection under arbitrary viewing and illumination conditions by Simpson, J.J., Zhonghai Jin, Stitt, J.R.

“…Relatively little work on cloud shadow detection has been published and many of these papers deal with restricted geometries. Here, arbitrary viewing and…”
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Long-term climate patterns in Alaskan surface temperature and precipitation and their biological consequences by Simpson, J.J., Hufford, G.L., Fleming, M.D., Berg, J.S., Ashton, J.B.

“…Mean monthly climate maps of Alaskan surface temperature and precipitation produced by the parameter-elevation regression on independent slopes model (PRISM)…”
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An E-J Collocated 3-D FDTD Model of Electromagnetic Wave Propagation in Magnetized Cold Plasma by Yaxin Yu, Simpson, J.J.

“…A new three-dimensional finite-difference time-domain (FDTD) numerical model is proposed herein to simulate electromagnetic wave propagation in an anisotropic…”
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Bidirectional anisotropic reflectance of snow and sea ice in AVHRR channel 1 and channel 2 spectral regions. II. Correction applied to imagery of snow on sea ice by Zhonghai Jin, Simpson, J.J.

“…For pt.I see ibid., vol.37, no.1, p.543-54 (1999). Advanced Very High Resolution Radiometer (AVHRR) images acquired over the Arctic Ocean often show strong…”
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An improved hybrid clustering algorithm for natural scenes by Simpson, J.J., McIntire, T.J., Sienko, M.

“…A new hybrid method for automatic clustering of satellite-observed natural scenes is presented. It uses a partitional clustering algorithm augmented by a…”
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Bidirectional anisotropic reflectance of snow and sea ice in AVHRR Channel 1 and 2 spectral regions. I. Theoretical analysis by Zhonghai Jin, Simpson, J.J.

“…The bidirectional reflectance anisotropy in Advanced Very High Resolution Radiometer (AVHRR) Channel 1 and 2 spectral regions for snow- and ice-covered…”
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Multivariate Alteration Detection (MAD) and MAF Postprocessing in Multispectral, Bitemporal Image Data: New Approaches to Change Detection Studies by Nielsen, Allan A., Conradsen, Knut, Simpson, James J.

“…This article introduces the multivariate alteration detection (MAD) transformation which is based on the established canonical correlations analysis. It also…”
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Arctic sea ice, cloud, water, and lead classification using neural networks and 1.6-/spl mu/m data by McIntire, T.J., Simpson, J.J.

“…Polar sea ice plays a critical role in regulating the global climate. Seasonal variation in sea ice extent, however, coupled with the difficulties associated…”
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Arctic sea ice, cloud, water, and lead classification using neural networks and 1.6-[mu]m data by McIntire, T.J, Simpson, J.J

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