Výsledky vyhledávání - "Ernest Holeman"

The Case for Global Positioning System Arcing and High Satellite Arc Rates

Autor: Richard Rast, Dale C. Ferguson, Stephen M. White, Ernest Holeman

Publikováno v: IEEE Transactions on Plasma Science. 47:3834-3841

The Global Positioning System (GPS) satellites arc into the space environment. Evidence for this consists of undispersed impulsive radio frequency signals are shown in the dual-frequency RF receivers, that are on-board all GPS satellites, with high r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::604dce51e1f991ba831adc4c6fde7dbd
https://doi.org/10.1109/tps.2019.2922556

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Ground-Based Surveillance Campaign to Detect Global Positioning System Arcing: First Preliminary Results

Autor: Stephen M. White, D. Suszcynsky, R. Rast, K. Balasubramaniam, D. Thompson, Dale C. Ferguson, Ernest Holeman

Publikováno v: Journal of Spacecraft and Rockets. 54:566-571

Excess power degradation on global positioning system (GPS) solar arrays has been ascribed to arc-induced contamination. Arcs have also been proposed as one source of spurious signals in Los Alamos...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc8f82abc28be0f34144eef863f61cfa
https://doi.org/10.2514/1.a33724

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Space environment simulation and sensor calibration facility

Autor: Ryan Hoffmann, Robert V. Hilmer, Ernest Holeman, Dale C. Ferguson, Daniel P. Engelhart, Russell Cooper, James Patton, Elena Plis, John O. McGarity

Publikováno v: Review of Scientific Instruments. 89:023301

The Mumbo space environment simulation chamber discussed here comprises a set of tools to calibrate a variety of low flux, low energy electron and ion detectors used in satellite-mounted particle sensors. The chamber features electron and ion beam so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9faa849f256461d7bb0c8b1d578e3a5
https://doi.org/10.1063/1.4999944

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Average height-integrated Joule heating rates and magnetic deflection vectors due to field-aligned currents during sunspot minimum

Autor: Ernest Holeman, D.A. Hardy, F. J. Rich, M. S. Gussenhoven

Publikováno v: Journal of Atmospheric and Terrestrial Physics. 53:293-308

Height-integrated Joule heating has been calculated from simultaneous observations of field-aligned currents and precipitating electrons made by the Defense Meterorological Satellite Program (DMSP) satellite F7. The DMSP/F7 satellite provided nearly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b0893909161eb589f089d96369cb26dd
https://doi.org/10.1016/0021-9169(91)90113-l

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Probability distributions of electron precipitation at high magnetic latitudes

Autor: William J. Burke, D. A. Hardy, K. H. Bounar, Ernest Holeman, L. C. Gentile

Publikováno v: Journal of Geophysical Research: Space Physics. 113

[1] We have integrated more than 600 million energetic electron spectra measured by the Special Sensor for Precipitating Particles, version 4 (SSJ4) sensor on nine Defense Meteorological Satellite Program (DMSP) spacecraft to obtain total number flux

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7c12ace5f8f1f57f12fbd125ed9f4ca
https://doi.org/10.1029/2007ja012746

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Seasonal, Kp, solar wind, and solar flux variations in long-term single-pass satellite estimates of electron and ion auroral hemispheric power

Autor: Katharine Kadinsky-Cade, M. Sue Greer, Weibin Xu, Ernest Holeman, Frederick J. Rich, David S. Evans, Valérie Coumans, Barbara A. Emery

Publikováno v: Journal of Geophysical Research: Space Physics. 113

[1] Electron auroral energy flux is characterized by electron hemispheric power (Hpe) estimated since 1978 from National Oceanic and Atmospheric Administration (NOAA) and Defense Meteorological Satellite Program (DMSP) satellites after the estimates

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3f05ca663bc50f957589ee55cc6cd6b
https://doi.org/10.1029/2007ja012866

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Banded electron structures in the plasmasphere

Autor: David A. Hardy, Ernest Holeman, Allen G. Rubin, William J. Burke

Publikováno v: Journal of Geophysical Research. 100:7759

The low-energy plasma analyzer on CRRES has detected significant fluxes of 10-eV to 30-keV electrons trapped on plasmaspheric field lines. On energy-versus-time spectrograms these electrons appear as banded structures that can span the 2 50 to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f74db02cf5fda7964484373d7f692617
https://doi.org/10.1029/94ja03148

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Time and altitude dependence of 55-Mev trapped protons, August 1961 to June 1964

Autor: Ernest Holeman, Robert C. Filz

Publikováno v: Journal of Geophysical Research. 70:5807-5822

Measurements of 55-Mev omnidirectional trapped protons detected in a small region of the South Atlantic by nuclear emulsions flown on recoverable oriented Air Force satellites are reported for the period August 1961 to June 1964 between altitudes of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::466fef8137cb79509683e1748772196c
https://doi.org/10.1029/jz070i023p05807

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Time variations of radiation belt protons

Autor: R. Stephen White, William W. Macy, Ernest Holeman, Robert C. Filz

Publikováno v: Journal of Geophysical Research. 75:4322-4328

The time dependence of the flux of high-energy radiation belt protons at low altitudes is calculated for the time period 1961 to 1970. The calculations are made with a simple transport equation that uses the variations of atmospheric density over thi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5d6bd896f0b81b21c457370fa3bfe26
https://doi.org/10.1029/ja075i022p04322

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