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New Calibration Noise Suppression Techniques for the Gloria Limb Imager : Volume 7, Issue 12 (17/12/2014)

By Guggenmoser, T.

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Book Id: WPLBN0004000097
Format Type: PDF Article :
File Size: Pages 41
Reproduction Date: 2015

Title: New Calibration Noise Suppression Techniques for the Gloria Limb Imager : Volume 7, Issue 12 (17/12/2014)  
Author: Guggenmoser, T.
Volume: Vol. 7, Issue 12
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Riese, M., Kleinert, A., Latzko, T., Rongen, H., Sha, M. K., Oelhaf, H.,...Kaufmann, M. (2014). New Calibration Noise Suppression Techniques for the Gloria Limb Imager : Volume 7, Issue 12 (17/12/2014). Retrieved from

Description: Institut für Energie- und Klimaforschung, IEK-7, Forschungszentrum Jülich GmbH, Jülich, Germany. The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) presents new opportunities for the retrieval of trace gases in the upper troposphere and lower stratosphere. The radiometric calibration of the measured signal is achieved using in-flight measurements of reference blackbody and upward-pointing deep space scenes. In this paper, we present techniques developed specifically to calibrate GLORIA data exploiting the instrument's imaging capability. The algorithms discussed here make use of the spatial correlation of parameters across GLORIA's detector pixels in order to mitigate the noise levels and artefacts in the calibration measurements. This is achieved by combining a priori and empirical knowledge about the instrument background radiation with noise-mitigating compression methods, specifically low-pass filtering and principal component analysis. In addition, a new software package for the processing of GLORIA data is introduced which allows us to generate calibrated spectra from raw measurements in a semi-automated data processing chain.

New calibration noise suppression techniques for the GLORIA limb imager

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