Irregularities in the Quiet Ionosphere and Their Effect on Propagation PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Irregularities in the Quiet Ionosphere and Their Effect on Propagation PDF full book. Access full book title Irregularities in the Quiet Ionosphere and Their Effect on Propagation by Stanford University. Stanford Electronics Laboratories. Download full books in PDF and EPUB format.
Author: Stanford University. Stanford Electronics Laboratories
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 162
Get Book Here
Book Description
The primary purpose of this investigation was to determine the nature and characteristics of a class of large, weak ionospheric irregularities which in certain circumstances significantly affect long-distance HF radio-wave propagation. A further purpose was to determine the relative practical importance of the diffraction produced by these inhomogeneities, in relation to the influence of other mechanisms such as Faraday rotation and scattering by small irregularities. Measurements of quasi-periodic variations in phase-path length have been made on a 2600 km one-hop lower-ray F-region path. Variations of 8 to 75 wavelengths are regularly observed during winter daylight hours. A model of the irregularities has been devised and has been used to predict the signal-strength fluctuations which would result from propagation through a medium described by the model. (Author).
Author: Stanford University. Stanford Electronics Laboratories
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 162
Get Book Here
Book Description
The primary purpose of this investigation was to determine the nature and characteristics of a class of large, weak ionospheric irregularities which in certain circumstances significantly affect long-distance HF radio-wave propagation. A further purpose was to determine the relative practical importance of the diffraction produced by these inhomogeneities, in relation to the influence of other mechanisms such as Faraday rotation and scattering by small irregularities. Measurements of quasi-periodic variations in phase-path length have been made on a 2600 km one-hop lower-ray F-region path. Variations of 8 to 75 wavelengths are regularly observed during winter daylight hours. A model of the irregularities has been devised and has been used to predict the signal-strength fluctuations which would result from propagation through a medium described by the model. (Author).
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1288
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 960
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 980
Get Book Here
Book Description
Author: Kenneth Davies
Publisher: IET
ISBN: 9780863411861
Category : Science
Languages : en
Pages : 612
Get Book Here
Book Description
This introductory text replaces two earlier publications (Davies 1965, 1969). Among the topics: characteristics of waves and plasma, the solar-terrestrial system, the Appleton formula, radio soundings of the ionosphere, morphology of the ionosphere, oblique propagation, importance of amplitude and phase, earth-space propagation. Annotation copyrighted by Book News, Inc., Portland, OR
Author: R. D. Hunsucker
Publisher: Cambridge University Press
ISBN: 1139435000
Category : Science
Languages : en
Pages : 639
Get Book Here
Book Description
A modern treatment of the physics and phenomena of the ionosphere, beginning with the basics of radio propagation and the use of radio techniques in ionospheric studies. Ample cross-referencing, chapter summaries and reference lists make this book an invaluable aid for graduate students, ionospheric physicists and radio engineers.
Author: N. D'Angelo
Publisher: Springer Science & Business Media
ISBN: 9401034028
Category : Science
Languages : en
Pages : 225
Get Book Here
Book Description
During the last week of September 1968, ESRIN (the European Space Research Institute) held the ESRIN-ESLAB Symposium on 'Low-Frequency Waves and Irregularities in the Ionosphere' in Frascati, near Rome. The symposium was attended by about 60 participants, including speakers from most of the ESRO member states, the U.S.A., the U.S.S.R., and Peru. The main topics covered were: (a) observations of ionospheric irregularities by radar scattering, (b) scintillations of satellite signals, (c) geomagnetic micropulsations, and (d) whistlers. Both theoretical and observational aspects were treated. In addition, laboratory results on low-frequency waves in plasmas were discussed, emphasis being given to their possible relevance to low-frequency ionospheric phenomena. Finally, a brief presentation (not included in these proceedings) of the ESRO rocket and satellite program was given by Dr. Pedersen of ESLAB. The symposium provided an exchange of information among workers in closely related fields. It was also valuable in bringing together people whose experience is predominantly in ionospheric observations with others whose field of interest is mainly in plasma physics (theoretical or laboratory) - a combination that seemed particularly appropriate to ESRIN's program and functions.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Get Book Here
Book Description
We conducted a comprehensive investigation of the Earth's ionosphere under quiet and disturbed magnetic conditions. During magnetic storms, we determined that two plasma processes can produce mid-latitude irregularities. One was related to the auroral oval dynamics and produced short-scale structures. The other was SED-related and generated large-scale irregularities. We also studied the characteristics of the TIDs that were generated near the northern and southern ovals during a magnetic storm, and found a pronounced inter-hemispheric asymmetry. We discovered that airglow intensity of polar cap patches can vary due to the passage of gravity waves. A numerical simulation reproduced the variability of the airglow emissions within the patches. Other studies involved analyzing in detail the preconditioning of the low-latitude ionosphere before the onset of plasma bubbles, comparing the statistics of zonal drifts as observed by different UHF scintillation systems, and understanding the electro-dynamics of the low and middle latitude ionosphere during super storms. We directed two campaigns with the Sondrestrom radar in coordination with the Qaanaaq and Ny Alesund imagers. We operated an all-sky imager at Vize Island during two winters observing a type of auroral arcs that extend equatorward from the cusp. We also supported the AFRL-SCINDA program with technical logistic and management efforts.
Author: Kenneth Davies
Publisher:
ISBN:
Category : Ionospheric radio wave propagation
Languages : en
Pages : 490
Get Book Here
Book Description
Author: John Keith Hargreaves
Publisher: Cambridge University Press
ISBN: 9780521427371
Category : Nature
Languages : en
Pages : 440
Get Book Here
Book Description
This book describes physical conditions in the upper atmosphere and magnetosphere of the Earth.
