NDLI: Meteorological factors in earth-satellite propagation (Document No: 19850018778)

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Meteorological factors in earth-satellite propagation (Document No: 19850018778)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lin, K. T. Weller II, A. E. Levis, C. A. Damon, E. K.
Copyright Year	1984
Description	A 5-meter paraboloidal antenna operated at 28 GHz showed gain changes of 2 dB due to rain. While precise estimation of the corresponding angle of arrival changes is difficult, they appear to have been on the order of 0.02 degrees. The attenuation at 28.6 GHz inferred from radiometry agreed well with that measured simultaneously over a satellite/Earth link at the same frequency. The radiometers so calibrated have been used to add to the available site diversity data base using a 9 km baseline. An improved empirical model of site diversity gain was obtained by applying regression techniques to available published data. A brief review of the literature has led to suggestions for two experimental programs, one dealing with multifrequency radiometry and the other with the effects of the stochastic properties of precipitation on wideband data transmission.
File Size	3160297
Page Count	69
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850018778
Archival Resource Key	ark:/13960/t8wb0133q
Language	English
Publisher Date	1984-03-01
Access Restriction	Open
Subject Keyword	Communications And Radar Amplification Radiometers Extremely High Frequencies Rain Meteorological Parameters Space Communication Bandwidth Data Transmission Atmospheric Attenuation Transmission Efficiency Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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