A New Rigorous Model For Stereopairs Orientation: Application With Ikonos, Eros A And Quickbird

The satellite images are possible alternative to aerial photogrammetric, especially in areas where the organization of photogrammetric surveys may result critical. However, the real possibility of using HRSI for 3D applications strictly depends on their orientation, whose accuracy is related on the imagery quality, on the Ground Control Points quality, and on the model chosen to perform the orientation. Since 2003, the research group at the Area di Geodesia e Geomatica - Sapienza Università di Roma has been developing a specific and rigorous model designed for the orientation of single and stereo imagery acquired by pushbroom sensors carried on satellite platforms. This model has been implemented in the software SISAR (Software Immagini Satellitari Alta Risoluzione). In this paper the attention is focused on the orientation of QuickBird, IKONOS and EROS A stereopairs. To point out the effectiveness of the new model, SISAR results are compared with the corresponding ones obtained by the software OrthoEngine 10.0 (PCI Geomatica), where Thierry Toutin's rigorous model for the imagery elaboration of the main high resolution sensors is implemented.