Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004smra.conf..209b&link_type=abstract
Spectrum Management for Radio Astronomy, Proceedings of the IUCAF summer school Held at Green Bank, West Viginia, June 9-14, 200
Astronomy and Astrophysics
Astronomy
Scientific paper
The Allen Telescope Array faces unprecedented challenges and opportunities with respect to radio frequency interference. Its broad-band frontend gives the ATA unique observing flexibility but makes it vulnerable to interference outside of the protected radio astronomy bands. This vulnerability occurs through direct conflict at the observing frequency between radio astronomy sources and interferers and through front-end saturation in the case of strong interferers regardless of the observing frequency. For these reasons the ATA is the first radio telescope designed with RFI mitigation as an integral element. The large-N nature of the ATA, the reliance on programmable digital electronics, and an awareness of new algorithms and techniques will make the ATA particularly effective at RFI mitigation. Mitigation is integrated into the design from the antenna to the IF processor to the correlator. One observing strategy employs a range of techniques and new hardware elements to address specific interference problems and specific science goals. Without these tools, many of the science goals of the ATA cannot be achieved.
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