Results 171 to 180 of about 93,595 (201)

Venus radar for subsurface and ionosphere sounding (VENSIS)

IEEE International Geoscience and Remote Sensing Symposium, 2003
As a subsurface sounder, VENSIS would obtain fundamentally different kinds of geologic Information than Magellan. Mapping of Interfaces of geologic units (e.g. tessera, plains, lava flows, impact debris) could be extended into the third dimension.
Daniela Biccari, Donald A. Gurnett, William T. K. Johnson, Richard L. Huff, L. Marinangeli, Rolando L. Jordan, Erling Nielsen, G. G. Ori, Giovanni Picardi, Jeffrey J. Plaut, F. Provvedi, Roberto Seu, Enrico M. Zampolini   +12 more
openaire   +1 more source

Digital Ionospheric Sounding in the Arctic.

1981
Abstract : New ionogram observation techniques were applied at the Goose Bay Ionospheric Observatory (GBIO) in Newfoundland, Canada, and aboard AFGL's Airborne Ionospheric Observatory (AIO), using the Digisonde 128PS system. A receiving array of four crossed-loop antennas at GBIO enabled incidence angle and polarization measurements within the ionogram
K. Bibl, B. W. Reinisch
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Inverse problem of radiofrequency sounding of ionosphere

International Journal of Modern Physics A, 2016
An algorithm for the solution of the inverse problem of vertical ionosphere sounding and a mathematical model of noise filtering are presented. An automated system for processing and analysis of spectrograms of vertical ionosphere sounding based on our algorithm is described. It is shown that the algorithm we suggest has a rather high efficiency. This
E. N. Velichko, A. Yu. Grishentsev, A. G. Korobeynikov   +2 more
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Ionospheric topside sounding.

Science (New York, N.Y.), 2010
Over the past few years, the satellite topside sounders have significantly contributed to the understanding of the upper ionosphere. A great quantity of radio echo data has been accumulated, from which the ionospheric electrondensity distribution can be determined. The topside measurements of electron density essentially agree with similar measurements
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Digital ionospheric sounding and analysis

1978
Thesis (Ph.D.) -- La Trobe University, 1978.; Submitted to the Department of Physics.
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Linear modelling in vertical ionospheric sounding

Studia Geophysica et Geodaetica, 1989
Applying the methods of computing N(h) profiles to scalar product spaces provides a more general view of the differences between the individual ionospheric models, which enables a better selection of the optimum model.
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Modeling the effect of the ionosphere on electromagnetic sounding

Computational Mathematics and Modeling, 2009
We derive the asymptotic behavior of the electromagnetic field on the surface of a layered Earth allowing for the effect of the ionosphere. The analysis of the fields enables us to estimate the distance over which the ionosphere has a substantial effect.
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Assimilation of GPS Soundings in Ionospheric Models

2010
The ionosphere, usually defined to extend upward from about 80 km, is the region of the Earth’s atmosphere where concentration of ionized particles becomes sufficiently high to become easily observable. Below 80 km absorption of solar radiation by the atmosphere above decreases the probability of a neutral atmospheric molecule being ionized and results
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TID, electron density and ionospheric sounding

Journal of Atmospheric and Terrestrial Physics, 1994
Abstract For the approximation of a parabolic ionospheric layer, the relation between the fluctuation amplitude of radio phase path in HF vertical sounding and sinusoidal disturbance parameters has been found. Horizontal disturbance propagation has not been considered.
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IONOSPHERIC STRUCTURE SOUNDING

Scientific research of the SCO countries: synergy and integration
A.S. Schegolevatykh, B.N. Voronkov
openaire   +1 more source