Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2024, Vol. 21, No. 1, pp. 185-193
In-flight geometric calibration of multispectral satellite imaging system KMSS-2 on board Meteor-M No. 2-3 satellite
B.S. Zhukov
1 , T.V. Kondratieva
1 , A.V. Nikitin
1 , I.V. Polyanskiy
1 1 Space Research Institute RAS, Moscow, Russia
Accepted: 16.01.2024
DOI: 10.21046/2070-7401-2024-21-1-185-193
Multispectral satellite imaging system KMSS-2 was put into orbit in June 2023 on board Meteor-M No. 2-3 satellite. The instrument is similar to the one on board Meteor-M No. 2-2. It consists of two identical multispectral cameras with 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 shoreline and islands in Aegean and Black seas and a bank of Sentinel-based ground control points. The total number of recognized ground control points during calibration varied from approximately 3000 to 9000 depending on camera and channel. Their observation angles could be approximated by a common projection function with a root-mean-square deviation of 0.32 to 0.41 pixels in flight direction and 0.52 to 0.57 pixels in the perpendicular direction. The internal calibration parameters of each spectral channel were defined, including focal length, normal to the observation plane and distortion coefficients. 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 No. 2-3, in-flight geometric calibration, interior calibration parameters, ground control points
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