Abstract
This paper presents a new method for estimating the mismodeled dynamics parameters of natural forces through the analysis of optimal control policies and control distance metrics. Using similarities between natural dynamics and optimal control policies, this algorithm is able to accurately estimate mismodeling in atmospheric drag and solar radiation pressure perturbations through a batch process in the presence of boundary state uncertainty. An accompanying maneuver detection algorithm determines when the system’s dynamics are mismodeled and when a single actuated maneuver occurs. By providing a more accurate dynamical model, estimation methods such as this are important to predicting and avoiding collisions: a growing concern as the population of this environment rapidly increases. This algorithm is also specifically geared toward data-sparse applications, as it becomes more accurate the longer the gap between observations. This makes it a good fit for noncooperative orbit tracking applications. Derivations of the estimation method and the maneuver detection method are provided along with numerical simulations, demonstrating the performance of this new algorithm in tracking scenarios that span from low Earth orbit to geosynchronous orbit.
Published Version
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