Radio Frequency Interference Mitigation at the WSRT

Details Radio Frequency Interference Mitigation at the WSRT Radio Frequency Interference Mitigation at the WSRT

2010-10-13

arxiv.org/abs/1010.2771v1

The Astronomical J.,128, 933, 2004 August

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

17 pages, 17 figures

Scientific paper

The sensitivity of radio astronomical stations is often limited by man-made radio frequency interference (RFI) due to a variety of terrestrial activities. An RFI mitigation subsystem (RFIMS) based on real-time digital signalprocessing is proposed here for the Westerbork Synthesis Radio Telescope based on a powerful field programmable gate array processor. In this system the radio astronomy signals polluted by RFI are "cleaned" with the RFIMS before routine back-end correlation processing takes place. The high temporal and frequency resolution of RFIMS allows the detection and excision of RFI better than do standard radio telescope back-end configurations.

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