Assessment of rfi measurements for lofar

Marinus Jan Bentum, A.J. Boonstra, R.P. Millenaar

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    In the North-Western part of Europe, ASTRON is building the world-largest largest low-frequency radio telescope. The telescope is based on phased array principles and is known as the LOw Frequency ARray (LOFAR). LOFAR is optimized for detecting astronomical signals in the 30-80 MHz and 120-240 MHz frequency windows. Since this part of the spectrum is in extensive use by others, special care must be taken in the selection of possible out-station sites for LOFAR. RFI measurements were made to be sure that the radio spectrum at the potential out-station locations is suitable for LOFAR operations. An assessment procedure is presented here and specific issues are discussed, such as the impact of Digital Video Broadcast, and wind turbines. The results of the RFI observations has generated a list of specifications for (international) LOFAR out-stations.
    Original languageUndefined
    Title of host publicationRFI Mitigation Workshop (RFI2010)
    Place of PublicationGroningen
    PublisherProceedings of Science (POS)
    Number of pages7
    ISBN (Print)1824-8039
    Publication statusPublished - 30 Mar 2010
    EventRFI Mitigation Workshop, RFI 2010 - Groningen, the Netherlands
    Duration: 29 Mar 201031 Mar 2010

    Publication series

    PublisherProceedings of Science (POS)


    WorkshopRFI Mitigation Workshop, RFI 2010
    Other29-31 March 2010


    • IR-75274
    • EWI-19081
    • METIS-276220

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