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Review of Propagation Results from the Advanced Communications Technology Satellite (ACTS) and Related Studies

David V. ROGERS, Robert K. CRANE

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Summary :

Interest in service offerings at Ka-band (20/30 GHz) and above has been increasing recently, driven mainly by the availability at higher frequencies of wider bandwidths, which are attractive for many multimedia applications, for example. A dominant concern in implementing systems to operate in such bands is the severe propagation environment that exists on many transmission paths, such as paths in rainy climates or at low path elevation angles. Adequate understanding of the propagation environment is imperative in the design of economically viable telecommunication systems at these frequencies. A propagation measurement campaign that addressed many of these concerns was conducted in North America with 20.2 and 27.5 GHz radio beacons on NASA's Advanced Communications Technology Satellite (ACTS). Data were collected at seven locations over a continuous 5-year period to supply statistics of propagation impairments for a variety of climate types and path geometry. The primary results of the ACTS campaign as reported to date are reviewed. Studies performed to address related issues, including fading dynamics, site diversity and mobile-satellite performance, are also described. Elements of this paper were presented at the 2000 International Symposium on Antennas and Propagation (ISAP 2000), Fukuoka, Japan, 21-25 August 2000.

Publication
IEICE TRANSACTIONS on Communications Vol.E84-B No.9 pp.2357-2368
Publication Date
2001/09/01
Publicized
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DOI
Type of Manuscript
Special Section INVITED PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
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