NDLI: Meteorological factors in earth-satellite propagation

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Meteorological factors in earth-satellite propagation

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lin, K. T. Pigon, B. Taylor, R. C. Weller, A. Levis, C. A. Leonard, R.
Copyright Year	1982
Description	Using the COMSTAR D/4 28.56 GHz beacon as a source, a differential gain experiment was performed by connecting a 5-meter paraboloidal antenna and a 0.6-meter paraboloidal antenna alternately to the same receiver. Substantial differential gain changes were observed during some, but not all, rain events. A site-diversity experiment was implemented which consists of two 28.56 GHz radiometers separated by 9 km. The look-angle corresponds to that of the D/4 beacon, and data were obtained with one radiometer during several weeks of concurrent beacon operation to verify the system calibration. A theoretical study of the effect of scattering from a nonuniform rain distribution along the path is under way to aid in interpreting the results of this experiment. An improved empirical site diversity-gain model was derived from data in the literature relating to 34 diversity experiments. Work on the experiment control and data acquisition system is continuing with a view toward future experiments.
File Size	4705877
Page Count	58
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820021636
Archival Resource Key	ark:/13960/t9t19tw40
Language	English
Publisher Date	1982-03-01
Access Restriction	Open
Subject Keyword	Communications And Radar Radiometers Wave Amplification Rain Comstar Satellites Data Acquisition Spacecraft Communication Atmospheric Attenuation Signal Transmission Parabolic Bodies Antenna Radiation Patterns 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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