Results 251 to 260 of about 35,368 (282)

Ionospheric response to winter stratosphere/lower mesosphere jet stream in the Northern Hemisphere as derived from vertical radio sounding data

Journal of Atmospheric and Solar-Terrestrial Physics, 2018
Abstract We study the effects of the middle atmosphere dynamics on the mid-latitude and subauroral ionosphere during the winter jet stream that occurred at the stratosphere/lower mesosphere heights in the Northern Hemisphere over 2008–2013. The used ionospheric data were obtained from measurements taken at the vertical sounding ionosonde chain ...
M.A. Chernigovskaya, B.G. Shpynev, K.G. Ratovsky, A.Yu. Belinskaya, A.E. Stepanov, V.V. Bychkov, S.A. Grigorieva, V.A. Panchenko, N.A. Korenkova, J. Mielich   +9 more
openaire   +1 more source

Modeling an experiment on radio sounding of the ionosphere from the artificial earth satellite Kosmos 1809 in the presence of vertical electron concentration inhomogeneities in the Arctic region

Geomagnetism and Aeronomy, 2012
We explain a hypothesis on the origin and propose a model of the specific formation of the electron density in the polar ionosphere in the form of relatively thin vertical and inclined layers and sheets. Modeling has confirmed that the main features noted in the experiment are successfully depicted in the proposed model, namely, the significant group ...
N. P. Danilkin, S. V. Zhuravlev, N. G. Kotonaeva, M. M. Anishin, M. A. Kuraev   +4 more
openaire   +1 more source

Validation of GPS Ionospheric Radio Occultation results onboard CHAMP by Vertical Sounding Observations in Europe

2005
Ionospheric radio occultation (IRO) measurements have a big potential for monitoring the ionospheric behavior on global scale for now- and forecasting the ionospheric impact on radio systems. In this article we validate the retrieved vertical electron density profiles (EDPs) derived from IRO measurements onboard CHAMP by using vertical sounding ...
Norbert Jakowski, Konstantin Tsybulyal, Jens Mielich, Anna Belehaki, David Altadill, Jean-Claude Jodogne, Bruno Zolesi   +6 more
openaire   +1 more source

Signal power for radio acoustic sounding of temperature: The effects of horizontal winds, turbulence, and vertical temperature gradients

Radio Science, 1992
A simple expression for the expected average signal power of a radio acoustic sounding system (RASS) comprising a monostatic pulsed Doppler radar and a continuous‐wave broadbeam acoustic source is developed. The effects of horizontal winds, atmospheric turbulence, and vertical temperature gradients are included.
openaire   +1 more source

Vertical Sounding of Ionospheric Radio Channels by Multicarrier Phase-Shift Keying Signals

2022 Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO), 2022
Vladimir Ivanov, Dmitry Ivanov, Aleksey Elsukov   +2 more
openaire   +1 more source

The physics of fast radio bursts

Reviews of Modern Physics, 2023
B-B Zhang
exaly  

Experimental investigation of fluctuations of Doppler frequencies and angles of arrival of radio signals, using vertical sounding of the F2 layer

Radiophysics and Quantum Electronics, 1978
�. L. Afraimovich, B. O. Vugmeister, V. N. Zakharov, A. D. Kalikhman, V. A. Korolev   +4 more
openaire   +1 more source

Investigation of the Type of Radio Emissions from Sources of Radio Emissions Such as: Seismo-Ionospheric Communications, Galactic Background, "Swan-A" and "Cassiopeia-A" By Vertical Ionospheric Sounding at a Wavelength of 4.2 M

Book of Proceedings Solar Influences on the Magnetosphere, Ionosphere and Atmosphere, 2023
openaire   +1 more source

A survey of spectrum sensing algorithms for cognitive radio applications

IEEE Communications Surveys and Tutorials, 2009
Hüseyin Arslan
exaly  

Comparison of results of LIDAR, radio-sounding and microwave observations of the wind characteristics vertical profiles.

2016
Zamorin, Igor, Kuznetsov, Anatoly, Melnikova, Irina, Samulenkov, Dmitry, Sapunov, Maxim, Solonin, Alexander   +5 more
openaire   +1 more source