Calibration of the OLFAR space-based radio telescope using an alternating least squares approach

Pieter Karel Anton van Vugt, Arjan Meijerink, Marinus Jan Bentum

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

    2 Citations (Scopus)

    Abstract

    Radio astronomy below 30 MHz has never been properly performed because the ionosphere inhibits this on Earth. The Orbiting Low-Frequency Antennas for Radio Astronomy (OLFAR) project aims to build a radio telescope consisting of 50 or more nano-satellites in space, forming a swarm-like array. The observational antenna systems need to be calibrated to successfully detect astronomical signals. However, a satellite swarm presents a unique calibration challenge, which is outlined in this paper. An approach is proposed for the calibration of several important system parameters, based on alternating least squares (ALS). In the proposed method, polarization is taken into account without the common simplifications, such as only considering fully linear polarization, and a good convergence rate is achieved. For validation, Monte Carlo simulations are compared with the Cramer-Rao bound.
    Original languageEnglish
    Title of host publication2016 IEEE Aerospace Conference
    Place of PublicationUSA
    PublisherIEEE Aerospace and Electronic Systems Society
    Pages1-8
    Number of pages8
    ISBN (Print)978-1-4673-7676-1
    DOIs
    Publication statusPublished - 11 Mar 2016
    Event2016 IEEE Aerospace Conference - Yellowstone Conference Center, Big Sky, United States
    Duration: 5 Mar 201612 Mar 2016

    Publication series

    Name
    PublisherIEEE Aerospace and Electronic Systems Society

    Conference

    Conference2016 IEEE Aerospace Conference
    CountryUnited States
    CityBig Sky
    Period5/03/1612/03/16

    Keywords

    • EWI-27079
    • METIS-318461
    • IR-101029

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  • Cite this

    van Vugt, P. K. A., Meijerink, A., & Bentum, M. J. (2016). Calibration of the OLFAR space-based radio telescope using an alternating least squares approach. In 2016 IEEE Aerospace Conference (pp. 1-8). USA: IEEE Aerospace and Electronic Systems Society. https://doi.org/10.1109/AERO.2016.7500559