Results 11 to 20 of about 3,117 (297)

GLOBAL POSITIONING SYSTEM STUDIES OF EQUATORIAL SCINTILLATIONS [PDF]

open access: yes, 1998
The Global Positioning System (GPS) satellites provide an extensive array of beacon signals for probing the ionosphere. Studies of ionospheric propagation at the GPS L band frequencies (1.2 and 1.6 Hz) are of great interest for proposed communications ...
Beach, Theodore Lyman
core   +6 more sources

Polarization-resolved scintillations in Young's experiment

open access: yes, 2022
The conventional scintillation, or intensity fluctuation, that occurs in random electromagnetic beams is just one member of a broader class of four interconnected, polarization-resolved scintillations.
Cai, Yangjian   +3 more
core   +1 more source

Characteristics of VHF radiowave scintillations over a solar cycle (1983−1993) at a low-latitude station: Waltair (17.7°N, 83.3°E) [PDF]

open access: yesAnnales Geophysicae, 1997
The characteristics of VHF radiowave scintillations at 244 MHz (FLEETSAT) during a complete solar cycle (1983–93) at a low-latitude station, Waltair (17.7°N, 83.3°E), are presented.
P. V. S. Rama Rao   +5 more
doaj   +1 more source

Influence of different types of ionospheric disturbances on GPS signals at polar latitudes [PDF]

open access: yesAnnales Geophysicae, 2021
The comparative research of the influence of different types of auroral particle precipitation and polar cap patches (PCPs) on the global positioning system (GPS) signals disturbances in the polar ionosphere was done.
V. B. Belakhovsky, Y. Jin, W. J. Miloch
doaj   +1 more source

VARIABLE RADIO SOURCES AND TAKING INTO ACCOUNT OF IONOSPHERIC EFFECTS

open access: yesOdessa Astronomical Publications, 2017
Histograms and mean value of scintillations indexes are obtained for power cosmic radio sources on observations during 1998-2001. Using simulations it is showed that scintillations with periods more then 10 minutes give the error of measuring of ...
O. A. Litvinenko, S. K. Panishko
doaj   +1 more source

DISTRIBUTION OF THE OCCURRENCE OF THE INTENSIVE IONOSPHERE SCINTILLATIONS ON THE OBSERVATIONS OF THE COSMIC RADIO SOURCES AT THE DECAMETER WAVE RANGE

open access: yesOdessa Astronomical Publications, 2020
Effect of scintillations arises in the result of interaction of radio signal from the cosmic radio source with irregularities of ionosphere plasma which appears at the registration of observations as amplitude fluctuations.
O. A. Lytvynenko, S. K. Panishko
doaj   +1 more source

Simultaneous observations of ESF irregularities over Indian region using radar and GPS [PDF]

open access: yesAnnales Geophysicae, 2008
In this paper, we present simultaneous observations of temporal and spatial variability of total electron content (TEC) and GPS amplitude scintillations on L1 frequency (1.575 GHz) during the time of equatorial spread F (ESF) while the MST radar (53 ...
S. Sripathi   +5 more
doaj   +1 more source

SPACE WEATHER: RISK FACTORS FOR GLOBAL NAVIGATION SATELLITE SYSTEMS

open access: yesSolar-Terrestrial Physics, 2021
Extreme space weather events affect the stability and quality of the global navigation satellite systems (GNSS) of the second generation (GPS, GLONASS, Galileo, BeiDou/Compass) and GNSS augmentation.
V.V. Demyanov, Yu.V. Yasyukevich
doaj   +1 more source

SibNet — Siberian Global Navigation Satellite System Network: Current state

open access: yesSolar-Terrestrial Physics, 2018
In 2011, ISTP SB RAS began to deploy a routinely operating network of receivers of global navigation satellite system signals. To date, eight permanent and one temporal sites in the Siberian region are operating on a regular basis.
Yasyukevich Yu.V.   +2 more
doaj   +1 more source

Cosmic-Ray Scintillations [PDF]

open access: yes, 1973
This Thesis reports the observation and theoretical interpretation of a new physical phenomenon. Cosmic-ray "scintillations" are temporal fluctuations in the counting rate of a detector pointing in a fixed direction in space.
Owens, Aaron James
core   +1 more source

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