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Noise maps in aperture synthesis radiometric images due to cross‐correlation of visibility noise
Author(s) -
Butora Robert,
Camps Adriano
Publication year - 2003
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2002rs002707
Subject(s) - remote sensing , radiometer , visibility , interferometry , radiometry , aperture synthesis , noise (video) , redundancy (engineering) , environmental science , geology , computer science , optics , physics , artificial intelligence , image (mathematics) , operating system
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.