Photogrammetric Algorithms and Software for Spacecraft Optical Imaging Systems

by Tim R. Colvin

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This Note describes photogrammetric algorithms and software that can be used with data obtained from spacecraft optical imaging systems. The algorithms and software solve for control point coordinates, camera orientation angles, the position of a target body's north pole, and the target body's rotation rate. This work can be used to generate control point networks and ancillary data for target bodies, which can then be used to mosaic individual photographs into unified cartographic products. The mathematics of the photogrammetric least-squares procedure is described in detail. It is presented in such a manner that readers wishing to make modifications are accommodated. Two FORTRAN programs are presented. The appropriate input and output files for these programs are discussed, and the programs themselves contain extensive comments. This Note is intended as a brief reference. The intended audience consists of planetary scientists familiar with the data and possessing an intimate knowledge of FORTRAN.

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