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Scattering effects of solar panel on Space Station Space-To-Ground (SGS) antenna performance
Author and Affiliation:
Hwu, Shian U.(NASA Lyndon B. Johnson Space Center, Houston, TX, United States)
Johnson, Larry A.(NASA Lyndon B. Johnson Space Center, Houston, TX, United States)
Fournet, Jon S.(Lockheed Engineering and Sciences Co., Houston, TX, United States)
Panneton, Robert J.(NASA Lyndon B. Johnson Space Center, Houston, TX, United States)
Eggers, Donald S.(NASA Lyndon B. Johnson Space Center, Houston, TX, United States)
Arndt, G. D.(NASA Johnson Space Center, Houston, TX, United States)
Abstract: The purpose of this study is to characterize the scattering effects of a solar panel on the Space Station Space-to-Ground Subsystem reflector antenna when the antenna is operated in the RF tracking (difference) mode. This analysis is based on a combination of geometrical theory of diffraction and aperture integration techniques. The advantage of this combination method is its capability in predicting reflector antenna patterns not only in the forward region but also in the far-out sidelobes and backlobes. To verify the analytical model, measurements were performed on the Johnson Space Center far-field antenna test facility. Good agreement between computed and measured results was obtained. It was shown from computation and experiment that the solar panel scattering interference causes a shift in null position, a decrease in the depth of the null, as well as a decrease in the gain on the antenna difference mode patterns.
Publication Date: Jan 01, 1992
Document ID:
19920047244
(Acquired Nov 22, 1995)
Accession Number: 92A29868
Subject Category: COMMUNICATIONS AND RADAR
Report/Patent Number: AIAA PAPER 92-1941
Document Type: Conference Paper
Publication Information: (SEE A92-29751)
Publisher Information: United States
Meeting Information: AIAA International Communication Satellite Systems Conference and Exhibit; 14th; Mar. 22-26, 1992; Washington, DC; United States
Financial Sponsor: NASA; United States
Organization Source: NASA Johnson Space Center; Houston, TX, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: GEOMETRICAL THEORY OF DIFFRACTION; REFLECTOR ANTENNAS; SATELLITE ANTENNAS; SIDELOBES; SOLAR CELLS; SPACE STATIONS; BACKSCATTERING; SUPERHIGH FREQUENCIES
Imprint And Other Notes: IN: AIAA International Communication Satellite Systems Conference and Exhibit, 14th, Washington, DC, Mar. 22-26, 1992, Technical Papers. Pt. 2 (A92-29751 11-32). Washington, DC, American Institute of Aeronautics and Astronautics, 1992, p. 987-991.
Availability Source: Other Sources
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