The Diffraction of High Frequency Radio Waves by Irregularities in the Ionosphere with Emphasis on Waves Emanating from Satellites PDF Download
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Author: John Paul De Barber
Publisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 190
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Book Description
Author: John Paul De Barber
Publisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 190
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Book Description
Author: J. P. de Barber
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
A diffraction theory is developed for a model in which the irregularities are confined to a slab. In the slab the refractive index is assumed to be a random function of position having a Gaussian autocorrelation function. The statistical parameters of the diffraction pattern on the ground are calculated for the case when the slab is illuminated by a stationary point source. Second, the dynamic characteristics of the diffraction pattern for a moving source are examined and applied to methods of determining the altitude, size, shape, and orientation of the irregularities. The methods involve simultaneous recording of signal amplitude at spaced receiving stations. Graphical and analytical procedures are developed to handle the complex geometry problems. Finally, the results of experiments utilizing the 54 mc radiation of Transit 4A are presented and conclusions are drawn. (Author).
Author: Thomas Martin Georges
Publisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 356
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Author:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 988
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1170
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Author:
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ISBN:
Category : Geophysics
Languages : en
Pages : 92
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Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1556
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Author: J. Videberg
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 92
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Book Description
A critical study of the interrelationship between ionospheric environmental characteristics and HF radio propagation phenomena using satellites is described. The project is implemented by the experiment consisting of two slowly-separating satellites in the lower F-region ionosphere and two special receiving-transmitting ground stations. Measurements of radio propagation characteristics are made along the signal path between satellites as well as to the ground until separation reaches antipodability. These measurements including signal loss, pulse dispersion, long-range ducting, radio holes and shielding from ground, space, or other satellites to be compared with calculations based on simultaneous environmental measurements are discussed. Environmental data to be measured includes in-situ electron densities, integrated values along signal paths near ground stations using dispersive doppler, Faraday, and pulse-delay techniques. Top and bottom sounder data will be combined with the propagation data using sophisticated 3-D ray-tracing techniques. The result is a comprehensive synoptic picture of the complex ionosphere-structure propagation-effect to provide new insights into ducting, especially the separation of various phenomena such as injection-ejection, scatter effects, antenna detuning and plasma resonances, and the role of irregularities. Predicted propagation results, including ray patterns, calculated for expected ionospheric conditions at the time of the anticipated experiment are presented together with a description of the instrumentation. (Author).
Author: United States. Environmental Science Services Administration
Publisher:
ISBN:
Category :
Languages : en
Pages : 358
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Author:
Publisher:
ISBN:
Category : Cosmic physics
Languages : en
Pages : 976
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