X C E L L E N C E I N S C I E N T I F I C A P P L I C AT I O N S
Xilinx FPGAs Beam Up Next-Gen Radio Astronomy Researchers in Australia are using Virtex-6 FPGAs to economically meet the demanding requirements of an advanced telescope called ASKAP. by Grant Hampson, PhD ASKAP Digital Systems Lead Engineer CSIRO Astronomy and Space Science Grant.Hampson@csiro.au John Tuthill, PhD Hardware and Firmware Engineer CSIRO Astronomy and Space Science John.Tuthill@csiro.au Andrew Brown Hardware and Firmware Engineer CSIRO Astronomy and Space Science Andrew.Brown@csiro.au Stephan Neuhold Firmware Engineer CSIRO Astronomy and Space Science Stephan.Neuhold@csiro.au Timothy Bateman Firmware Engineer CSIRO Astronomy and Space Science Tim.Bateman@csiro.au John Bunton, PhD ASKAP Project Engineer CSIRO Information and Communication Technologies Centre John.Bunton@csiro.au
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Xcell Journal
s the largest and most sensitive telescope ever envisioned, the Square Kilometre Array (SKA), a radio telescope under development by a consortium of 20 countries, will revolutionize our knowledge of the universe through large-area imaging from 70 MHz to a 10 GHz when it is deployed in the middle of the next decade. On the path to the development of the SKA, the Australian SKA Pathfinder (ASKAP) is at a key SKA science frequency band of 700 MHz to 1.8 GHz. ASKAP seeks to, achieve instantaneous wide-area imaging through the development and deployment of phased-array feed systems on parabolic reflectors. This large field of view makes ASKAP an unprecedented survey telescope poised to achieve substantial advances in SKA key science. The Commonwealth Scientific and Industrial Research Organisation, or CSIRO, is an Australian government-funded research agency. A division called CSIRO Astronomy and Space Science (CASS) is undertaking construction of the ASKAP (see www.csiro.au/org/CASS.html). The combination of location, technological innovation and scientific program will ensure that ASKAP is a world-leading radio astronomy facility, closely aligned with the scientific and technical direction of the SKA. CSIRO is also involved in the development of the SKA, which is anticipated to be operational in 2024. Currently under construction in outback Western Australia at the Murchison Radio Astronomy Observatory (MRO), ASKAP will consist of an array of thirty-six 12-meter dishes (Figure 1), each employing advanced phased-array feeds (PAFs) to provide a wide field of view: 30 square degrees. As opposed to conventional antenna optics, PAFs allow for multiple configurable beam patterns using digital
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Second Quarter 2011