The road to OLFAR - a roadmap to interferometric long-wavelength radio astronomy using miniaturized distributed space systems

Steven Engelen, Kevin A. Quillien, Chris Verhoeven, Arash Noroozi, Prem Sundaramoorthy, Alle-Jan van der Veen, Raj Rajan, Raj Thilak Rajan, Albert Jan Boonstra, Marinus Jan Bentum, Arjan Meijerink, A. Budianu

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)


    The Orbiting Low Frequency Antennas for Radio Astronomy (OLFAR) project aims to develop a space-based low frequency radio telescope that will explore the universe's so-called dark ages, map the interstellar medium, and discover planetary and solar bursts in other solar systems. The telescope, composed of a swarm of at least fifty satellites working as a single instrument, will be sent to a location far from Earth in order to avoid the high Radio Frequency Interference (RFI) found at frequencies below 30 MHz, originating from Earth. The OLFAR telescope is a novel and complex system, requiring not-yet proven technologies and systems, therefore, a number of key technologies are still to be developed and proven. Most of these can be tested on Earth, but four aspects in particular require in-space verification. Those are (1) the satellite's propulsion and attitude control systems, and (2) their interactions with the large science antennas, as well as the (3) payload system itself and finally (4) the in-space interferometry and 3D-imaging. Furthermore, the RFI environment in the intended target orbits is mostly unknown. Indeed, only three satellites missions have previously been launched into orbit shedding light on the RFI environment, but sufficiently detailed measurements allowing for the creation of a usable RFI model have never been performed. To carry out both the hardware qualification and RFI measurements, a few pathfinder missions are deemed in order. This paper describes these pathfinders in detail; outlining the scientific objective, the technologies being demonstrated as well as the missions' roadmap which revolves around a novel systems engineering approach. This approach resembles those used in certain fast-paced industries where development is heavily parallelised and products are launched as soon as opportunities arise. This will be combined with in-space upgrading of mission firmware to allow for high flexibility within the limited time and budget constraints of these pathfinders.
    Original languageUndefined
    Title of host publicationProceeding of the 64th IAC International Astronautical Congress
    Place of PublicationBeijing, China
    PublisherInternational Astronautical Federation (IAF)
    Number of pages7
    ISBN (Print)1995-6258
    Publication statusPublished - 24 Aug 2013
    Event64th International Astronautical Congress, IAC 2013 - Beijing, China
    Duration: 23 Sep 201327 Sep 2013
    Conference number: 64

    Publication series

    PublisherInternational Astronautical Federation (IAF)
    ISSN (Print)1995-6258


    Conference64th International Astronautical Congress, IAC 2013
    Abbreviated titleIAC


    • EWI-23828
    • METIS-300080
    • IR-87472

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