Astronomy and Astrophysics – Astronomy
Scientific paper
May 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974asec.rept.....c&link_type=abstract
Final Report, 13 Mar. 1973 - 13 Mar. 1974 Analytical Systems Engineering Corp., Burlington, MA.
Astronomy and Astrophysics
Astronomy
Noise Temperature, Radio Astronomy Explorer Satellite, Thunderstorms, Australia, Ionospheric Electron Density, Ionospheric Propagation, Noise Measurement, Ray Tracing, Satellite Antennas
Scientific paper
Radio Astronomy Explorer (RAE) I observations of thunderstorms over regions of low man-made noise levels are analyzed to assess the satellite's capability for noise source differentiation. The investigation of storms over Australia indicates that RAE can resolve noise generation due to thunderstorms from the general noise background over areas of low man-made noise activity. Noise temperatures observed by RAE over stormy regions are on the average 10DB higher than noise temperatures over the same regions in the absence of thunderstorms. In order to determine the extent of noise contamination due to distant transmitters comprehensive three dimensional computer ray tracings were generated. The results indicate that generally, distant transmitters contribute negligibly to the total noise power, being 30DB or more below contributions arriving from an area immediately below the satellite.
Caruso Joseph A.
Herman Jay R.
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