A weakly admissible mesh (WAM) on a continuum real-valued domain is sequence of discrete grids such that the maximum norm polynomials grid comparable to supremum domain. The asymptotic rate growth sizes and comparability constants must grow in controlled manner. In this paper, we recognize notion WAM can be generalized hierarchical subspaces not necessarily polynomial functions, analyze particu...

Several space borne cameras use push broom scanning to acquire imagery Traditionally mod eling and analyzing these sensors has been computation ally intensive due to the motion of the orbiting satellite with respect to the rotating earth and the non linearity of the mathematical model involving orbital dynamics A new technique for mapping a D point to its cor responding image point that leads t...

Future space surveillance requires dealing with uncertainties directly in the initial orbit determination phase. We propose an approach based on Taylor differential algebra to both solve the initial orbit determination (IOD) problem and to map uncertainties from the observables space into the orbital elements space. This is achieved by approximating in Taylor series the general formula for pdf ...