WANG Zhi, WU Guo-dong. Calibration of transition matrix on cubic prisms in mapping camera and star sensor[J]. Editorial Office of Optics and Precision Engineering, 2012,20(1): 96-101
WANG Zhi, WU Guo-dong. Calibration of transition matrix on cubic prisms in mapping camera and star sensor[J]. Editorial Office of Optics and Precision Engineering, 2012,20(1): 96-101 DOI: 10.3788/OPE.20122001.0096.
Calibration of transition matrix on cubic prisms in mapping camera and star sensor
It is necessary to determine camera postures in inertial coordinate systems
when the mapping camera is used in a photogrammetry for a transport stereo mapping satellite. In determining the camera postures
the postures of star sensor measuring system in the inertial coordinate system were measured by star sensors
then
the postures of the mapping camera measuring system in the inertial coordinate system were obtained by the transition matrix between star sensor measuring system and the cubic prism in star sensor and the transition matrix between the two cubic prisms in the star sensor and mapping camera. This paper introduces the definition of coordinate systems. By using the measuring systems of four theodolites
we establish coordinate systems on two cubic prisms respectively and a transition matrix for the coordinate systems. The calibration method of two coordinate systems is presented. The measuring results from many experiments show that the maximum calibration error is 1.011 6
which is better than 2(1) and satisfies the precision requirement of the stereoscopic mapping.
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