Setup for studying speckle noise of spectroradiometer diffusers in Earth observation applications

Anna Vaskuri, Claire Greenwell, Emma Woolliams

    Tutkimustuotos: LehtiartikkeliConference articleScientificvertaisarvioitu

    154 Lataukset (Pure)

    Abstrakti

    Diffusers in in-orbit spectroradiometers cause speckle under partially coherent solar radiation. A speckle pattern entering a spectroradiometer through a small slit creates systematic spectral deviations in measured spectra. We have developed a setup to characterise the spatial speckle of diffusers and the related spectral features. The decorrelation angles measured at 532 nm for Spectralon, Diffusil, and Heraeus diffusers were 0.021, 0.014, and 0.005 respectively. This information can be used for compensating speckle-related spectral features from the radiometric satellite measurements by averaging over multiple decorrelated spectra.

    AlkuperäiskieliEnglanti
    Artikkeli012002
    Sivumäärä5
    JulkaisuJournal of Physics: Conference Series
    Vuosikerta972
    Numero1
    DOI - pysyväislinkit
    TilaJulkaistu - 2 maalisk. 2018
    OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
    TapahtumaInternational Conference on New Developments and Applications in Optical Radiometry - Tokyo, Japani
    Kesto: 13 kesäk. 201716 kesäk. 2017
    Konferenssinumero: 13

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