Orientation of MOMS-02/D2 and MOMS-2P/PRIRODA imagery

This paper deals with the orientation of three-line imagery which has been taken during the MOMS-02/D2 experiment in spring 1993, and during the MOMS- 2P/PRIRODA mission since April 1996. The reconstruction of the image orient ation is based on a combined adjustment of the complete image, ground contr ol, orbit and attitude information. The combined adjustment makes use of th e orientation point approach or the orbital constraints approach, In the se cond case, the bundle adjustment algorithm is supplemented by a rigorous dy namical modeling of the spacecraft motion. The results of the combined adju stment using MOMS-02/D2 imagery and control information of orbit #75b are p resented. Based on the orientation point approach an empirical height accur acy of up to 4 m (0.3 pixel) is obtained. In planimetry the empirical accur acy is limited to about 10 m (0.7 pixel), since the ground control points ( GCP) and check points could not be identified in the imagery with the requi red accuracy. Computer simulations on MOMS-2P/PRIRODA image orientation bas ed on realistic input information have shown that good accuracies of the es timated exterior orientation parameters and object point coordinates can be obtained either with a single strip and a few precise GCP or even without ground control information, if a block of several overlapping and crossing strips with high geometric strength (q approximate to 60%) is adjusted. (C) 1999 Elsevier Science B.V. All rights reserved.