Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018, Vol. 15, No. 2, pp. 19-28
Reflectance data comparison of multispectral satellite imaging system KMSS-M on-board Meteor-M No. 2, MODIS on Terra and OLI on Landsat-8
T.V. Kondratieva
1 , B.S. Zhukov
1 , L.I. Permitina
2 , I.V. Polyanskiy
1 1 Space Research Institute RAS, Moscow, Russia
2 Research Center for Earth Operative Monitoring of Russian Federal Space Agency, Moscow, Russia
Accepted: 19.02.2018
DOI: 10.21046/2070-7401-2018-15-2-19-28
The multispectral satellite imaging system KMSS-M is operated on-board Meteor-M No. 2 satellite since July 2014. Meteor-M No. 2 is the second satellite after Meteor-M No. 1 in the Meteor 3M series of polar-orbiting weather satellites. KMSS-M consists of two cameras with a resolution of 60 m in three channels in the visible and near IR spectral range, which were optimized for land surface monitoring, and of one camera with a resolution of 120 m in three channels in the visible range, which were optimized for imaging waters. The KMSS-M cameras were radiometrically calibrated in-lab. The in-flight calibration of KMSS-M with an accuracy of 6–7 % is performed yearly using images of homogeneous snow cover on the high-altitude Antarctic Plateau with accounting for its scattering law. Comparison of reflectance of a wide range of natural objects, which were measured by the KMSS-M cameras and MODIS/Terra, showed that their root-mean-squared (RMS) deviation was in the range of 0.015–0.028. A similar comparison of the KMSS-M and OLI/Landsat-8 data resulted in RMS-deviation of reflectance values of 0.018–0.025 in the visible channels. The deviation increased to 0.035–0.037 in the near infrared KMSS-M channel probably due to its sensitivity to water vapor content variation in the atmosphere. The absolute calibration discrepancy between KMSS and MODIS was estimated to be within 3.8 %, between the visible channels of KMSS and OLI — within 5.5 %. The absolute calibration discrepancy between the near IR channels of KMSS-M and OLI could not be reliably estimated due to the water vapor variations.
Keywords: KMSS-M, multispectral satellite imaging system, Meteor-M No. 2, MODIS, Terra, OLI, Landsat-8, reflectance, in-flight radiometric calibration
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