Technology Development for Large Radio Arrays at the Jet Propulsion Laboratory

Details Technology Development for Large Radio Arrays at the Jet Propulsion Laboratory Technology Development for Large Radio Arrays at the Jet Propulsion Laboratory

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21813215j&link_type=abstract

American Astronomical Society, AAS Meeting #218, #132.15; Bulletin of the American Astronomical Society, Vol. 43, 2011

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Future radio arrays are likely to include far more antennas than current arrays, ultimately culminating in the Square Kilometre Array. During the past 1.5 years JPL personnel have been working on technologies to address the challenges of such large arrays, including lower power digital signal processing, real-time data adaptive algorithms, and large-scale data archiving and mining.
Power consumption by digital electronics may be a dominant component of the operating costs of large arrays. The choice of architecture for cross-correlation of thousands of antennas can have an orders-of-magnitude impact on power consumption. A power efficient architecture for a very-large-N array has been found.
A second area of development at JPL is adaptive algorithms to perform real-time processing of data in high volume data flows, when storage of raw data for later processing is not an option. Algorithms to enable real-time detection of fast radio transients are being tested on the VLBA, and will be deployed as part of the CRAFT collaboration on ASKAP and potentially at other observatories.
Finally, large radio arrays will produce extremely large data archives. We are working on applying a scalable framework for managing and mining large data archives to radio array needs. This framework is JPL's open source Process Control System, initially built for archiving data from NASA Earth Science missions and now used in a number of applications outside of astronomy.
This work has been carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

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