ORBIT DETERMINATION AND PROPAGATION OF OBJECTS WITH HIGH AMR FOR ORBITAL ARCHIVE MAINTENANCE

Recent research has revealed that objects with high AMR (usually more than 1 sq.m/kg) represent a significant portion of the GEO population and are usual among objects on GTO and other elliptical orbits. Their orbit is highly perturbed by solar radiation pressure, and this perturbation far exceeds all other perturbations. The paper presents methods and algorithms for the orbit determination and propagation for high AMR objects. An algorithm for the joint determination of the orbital parameters and the acceleration vector from the solar radiation pressure with a-priori information is developed.