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- W3029455513 abstract "Presented within this work is a new method for inertial orbit estimation of an object, either known or unknown, adaptable to a network of low-cost observation satellites. The observation satellites would only require a monocular camera for line of sight measurements. Using the line of sight measurements of each observer, a pair of orthogonal geometric planes that intersect both the observation satellite and the target are created. The intersection of the two planes in the inertial frame defines the new measurement model that is implemented with multiple observation nodes. Total system observability is analyzed and the instantaneous observability (per node) is used to remove “bad” measurements from the system. The measurement model is used in an extended Kalman filter framework and the measurement noise nonlinear transformation is addressed. Two cases are presented: first, a small number of observation nodes is analyzed to highlight the use of the instantaneous observability and its deleterious effect on the filter performance. Then, the method is expanded out to multiple observation satellites in a constellation. For both cases, the results show that this method is capable of producing accurate orbit estimation that converges in a short time." @default.
- W3029455513 created "2020-06-05" @default.
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- W3029455513 date "2021-04-01" @default.
- W3029455513 modified "2023-10-03" @default.
- W3029455513 title "Inertial space-based orbit estimation: A new measurement model for multiple observers" @default.
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- W3029455513 doi "https://doi.org/10.1016/j.actaastro.2020.05.033" @default.
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