Computer Science – Performance
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.8505j&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #85.05; Bulletin of the American Astronomical Society, V
Computer Science
Performance
Scientific paper
NASA and the Jet Propulsion Laboratory are considering future upgrades to the Deep Space Network (DSN) to increase sensitivity and reduce operating costs. Among the most promising options are large arrays of small-diameter antennas, which can reduce the cost per unit of collecting area and are very robust against individual antenna or receiver failures. If large DSN arrays are built, they will be potentially valuable assets for radio and radar astronomy in addition to their primary role of spacecraft tracking. We have recently completed a study of the scientific uses of DSN arrays, assuming that they are built according to the current design that considers only spacecraft tracking requirements. We then examined a number of possible upgrades to the current array design to increase the scientific potential, and estimated the incremental cost (in dollars and performance loss) of each upgrade. We conclude that a significant increase in bandwidth, by a factor of 2-8, is the most cost-effective upgrade for the arrays. Other upgrade options considered include enhanced tuning range (wider feed, polarizer, and amplifier frequency coverage), increased correlator capacity, additional frequency bands, and the addition of a small number of antenna clusters located a few hundred km from each main DSN array site. This study was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Jones Llanwyn D.
Kuiper Thomas B.
Majid Walid A.
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