Abstract
OMSL is a passive, space-based spectrometer designed to obtain the vertical profiles of trace gases such as ozone, by measuring atmospheric radiation in limb-viewing mode. Due to the presence of internal components such as gratings and dichroic mirror, OMSL is sensitive to polarization of incident light, which can lead to errors in the radiometric measurements, especially when the incident light is fully polarized. To eliminate the errors, an on-orbit polarization correction method is applied to OMSL. The key to this method is to calculate the polarization correction factor by combining the on-orbit polarization measurement and the pre-flight polarization calibration. In this paper, the on-orbit polarization correction method is introduced in detail. Furthermore, the first results of the on-orbit correction are analyzed and compared with simulation of the SCIATRAN.
Published Version
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