Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2017, Vol. 14, No. 4, pp. 52-63
Ground intercalibration methods of star sensor coordinate frames
N.A. Stroilov
1 , A.V. Nikitin
1 , A.N. Kurkina
1 , R.V. Bessonov
1 , E.V. Belinskaya
1 , S.V. Voronkov
1 1 Space Research Institute RAS, Moscow, Russia
Accepted: 25.05.2017
DOI: 10.21046/2070-7401-2017-14-4-52-63
The paper describes intercalibration between coordinate frames of spacecraft, attitude measuring instruments and payload. Calibration techniques and error evaluation are described. The ground calibration process is divided into two successive stages: 1) independent autonomous calibration of each instrument by the manufacturer; 2) joint calibration of instruments mounted on the spacecraft. Autonomous calibration is carried out on the bench equipment and relates the internal (measuring) coordinate frames with external frames such as mount seats or mirror cube. Complex calibration is carried out on the spacecraft and relates the coordinate frames of instruments and payloads. The results of each calibration stage are rotation matrices between coordinate frames. These matrices are subsequently use in the attitude complex and allow increasing accuracy and guidance time. Two calibration methods are considered: the first using mount seats, precision holes and plates, and the second using autocollimation measurements of mirror cube faces, which should be installed of instruments enclosures. Conducted errors analysis shows advantage of calibration though optical mirror cubes prior calibration through the seats.
Keywords: spacecraft orientation, attitude measuring instruments, ground, calibration, intercalibration, coordinate systems, frames, principal axes, techniques, methods, mirror cube, autocollimation measurements
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