ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2019, Vol. 16, No. 6, pp. 93-100

In-flight geometric calibration of KMSS-2 multispectral satellite imaging system on board Meteor-M No. 2-2 satellite

B.S. Zhukov 1 , L.A. Grishantseva 2 , T.V. Kondratieva 1 , A.V. Nikitin 1 , L.I. Permitina 2 , I.V. Polyanskiy 1 
1 Space Research Institute RAS, Moscow, Russia
2 Research Center for Earth Operative Monitoring Russian Space Systems JSC, Moscow, Russia
Accepted: 19.11.2019
DOI: 10.21046/2070-7401-2019-16-6-93-100
KMSS-2 multispectral satellite imaging system on board Meteor-M No. 2-2 satellite, which was put into orbit in July 2019, consists of two identical multispectral cameras with three interchangeable CCD lines in each of three spectral channel. It has a nadir resolution of 55 m and covers a total swath of 1020 km. KMSS-2 in-flight geometric calibration was performed using images of the Aegean and Black Seas shores acquired in August – November, 2019 from 32 orbits and a bank of Sentinel-based ground control points (GCP). The total number of recognized GCPs varied from 534 to 3025 depending on camera, channel and CCD line. The interior calibration parameters of each CCD line were defined, including focal length, observation plane and distortion coefficients and used to construct the projection function. Calibration accuracy was tested using the average GCP displacement in 16 images that were not used in calibration. The RMS georeferencing error was 12 to 39 m along track and 16 to 30 m cross track depending on CCD line, while the maximal error was 96 and 45 m along and cross track respectively. The RMS-error of interchannel coregistration was 3 to 4 m, with the maximal error of 8 m (0.15 of the pixel size). The calibration results are stored in the calibration files that are used along with navigation data for KMSS-2 image coregistration and georeferencing.
Keywords: KMSS-2, Meteor-M, in-flight geometric calibration, interior calibration parameters, ground control points
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