Title :
RFI mitigation in the context of pulsar coherent de-dispersion at the Nancay Radio Astronomical Observatory
Author :
Allal, D. Ait ; Weber, R. ; Cognard, I. ; Desvignes, G. ; Theureau, G.
Author_Institution :
Obs. de Paris, Station de Radioastron. de Nancay, INSU, Nancay, France
Abstract :
Radio astronomical pulsar observations require specific instrumentation and dedicated signal processing to cope with the dispersion caused by the interstellar medium. Moreover, the quality of observations can be limited by radio frequency interferences (RFI) generated by Telecommunications activity. This paper will present the innovative pulsar instrumentation based on Graphical Processing Units (GPU) which has been designed at the Nançay Radio Astronomical Observatory. In addition, first simulated results on RFI cyclostationary detectors, which will be implemented on the system, will be described and discussed.
Keywords :
astronomical instruments; astronomical observatories; graphics processing units; interstellar matter; pulsars; radioastronomical techniques; radioastronomy; radiofrequency interference; GPU; Graphical Processing Units; Nancay Radio Astronomical Observatory; RFI cyclostationary detectors; RFI mitigation; dedicated signal processing; instrumentation; interstellar medium; pulsar coherent de-dispersion; radio astronomical pulsar observations; radio frequency interferences; telecommunications activity; Abstracts; Bandwidth; Baseband; Clocks; Context; Detectors; Instruments;
Conference_Titel :
Signal Processing Conference, 2009 17th European
Conference_Location :
Glasgow
Print_ISBN :
978-161-7388-76-7
