Noise maps in aperture synthesis radiometric images due to cross-correlation of visibility noise

R. Butora, A. Camps

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    Abstract

    This study deals with the calculation of the distribution of radiometric errors ("noise maps") in the images formed by a two-dimensional aperture synthesis radiometer, specifically the MIRAS and the HUT-2D instruments. MIRAS is a spaceborne Y-shaped interferometric radiometer that will be boarded in the European Space Agency's SMOS Earth Explorer Mission. The HUT-2D is a U-shaped airborne interferometric radiometer under development by the Helsinki University of Technology. The study focuses on the known fact that the cross-correlation of the visibility noise does depend on the shape of the sensor. We investigate this dependence for the Y and the U configurations, taking into account also the results of previous studies on redundancy and tapering.
    Original languageEnglish
    Pages (from-to)61-68
    JournalRadio Science
    Volume38
    Issue number4
    Publication statusPublished - 2003
    MoE publication typeA1 Journal article-refereed

    Keywords

    • noise
    • aperture synthesis

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