GEOMETRIA DE IMAGENS: DO PROJETO DO ... - mtc-m17:80 - Inpe

IMAGE GEOMETRY: FROM THE SATELLITE PROJECT TO THEPRODUCT GENERATIONABSTRACTThis paper aims to fill in an important gap for the Brazilian Space Program. It offerselements for the study of the geometric quality of the remote sensing satellite images,from the initial development stage of the various systems in one satellite. Besides theCBERS Program, the Brazilian Space Program includes Brazil's participation in otherinternational cooperation programs, as well as other all-Brazilian programs, such as theRemote Sensing Satellite (RSS) and the Multi-Mission Platform (MMP). In all thesesituations, it is necessary to have the exact notion of the many factors that degrade thegeometry of the images, in order to be able to establish a relation between costs and thegeometric quality for each system sensor and platform systems, such as the attitude andorbit control systems This study identifies and classifies the many different causes ofdegradation of the images' geometry, proposes correction models for the causes alreadyclassified, and evaluates the quality of the images generated by those models.Experimental results related to different sets of satellites and instruments, differing inacquisition technology and space resolution, with special emphasis on the satellites ofthe CBERS family, are also presented and discussed. This paper presents acomprehensive technical guide to the aspects concerning the geometry of the imagesright from the initial stages of the satellite's project. The results obtained in this studycan guide the decisions in different stages of the design of a mission, when related tothe geometry of the images. The requirements of the sub-systems connected to theplatform must be aligned with those desirable requirements for the final quality of theimages purchasing.