GMV Covariance Estimation, Propagation and Analysis Tools

The knowledge of the state vector covariance of any space object (either operational or space debris) is essential both for satellite operations and for space surveillance. The orbit determination process entails the estimation not only of the orbital state of the space object but also of its uncertainties, represented by their covariance. This covariance can be propagated to obtain a representation of the orbit evolution uncertainty with time. In the frame of satellite operations, the covariance of the spacecraft state is needed for the assessment of collision risk with other objects. For Space Surveillance, it is used for the evaluation of the degradation of the knowledge of the state of the object being tracked, as additional tracking needs to be obtained for the objects suitable to be "lost" in order to update their state and uncertainties. This paper describes the implementation details of the integration of components for orbit determination and its associated covariance analysis and handling, its actual and potential use in satellite operations and space surveillance environments and the foreseen enhancements in the attempt to obtain the already mentioned comprehensive covariance determination, propagation and analysis package.