Exact Computation of High-Order State Transition Tensors for Perturbed Orbital Motion

Younes, Ahmad Bani

doi:10.2514/1.g003897

Cited by 9 publications

(1 citation statement)

References 23 publications

(45 reference statements)

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“…The dynamical system is represented during the analysis as a Taylor series expansion around the nominal orbit. Based on the chosen approximate order of the model, the uncertainty propagation method can be categorized into two classes: the linear covariance analysis (LinCov) method [8], which depends on the first-order state transition matrix (STM), and the state transition tensors (STT) method [9], which preserves the high-order nonlinear term. Under the LinCov method, the Gaussian PDF is used to fully characterize the underlying uncertainty.…”

Section: Introductionmentioning

confidence: 99%

Orbital Uncertainty Propagation Based on Adaptive Gaussian Mixture Model under Generalized Equinoctial Orbital Elements

Xie,

Xue,

et al. 2023

Remote Sensing

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The number of resident space objects (RSOs) has been steadily increasing over time, posing significant risks to the safe operation of on-orbit assets. The accurate prediction of potential collision events and implementation of effective and nonredundant avoidance maneuvers require the precise estimation of the orbit positions of objects of interest and propagation of their associated uncertainties. Previous research mainly focuses on striking a balance between accurate propagation and efficient computation. A recently proposed approach that integrates uncertainty propagation with different coordinate representations has the potential to achieve such a balance. This paper proposes combining the generalized equinoctial orbital elements (GEqOE) representation with an adaptive Gaussian mixture model (GMM) for uncertainty propagation. Specifically, we implement a reformulation for the orbital dynamics so that the underlying state and the moment feature of the GMM are propagated under the GEqOE coordinates. Starting from an initial Gaussian probability distribution function (PDF), the algorithm iteratively propagates the uncertainty distribution using a detection-splitting module. A differential entropy-based nonlinear detector and a splitting library are utilized to adjust the number of GMM components dynamically. Component splitting is triggered when a predefined threshold of differential entropy is violated, generating several GMM components. The final probability density function (PDF) is obtained by a weighted summation of the component distributions at the target time. Benefiting from the nonlinearity reduction caused by the GEqOE representation, the number of triggered events largely decreases, causing the necessary number of components to maintain uncertainty realism also to decrease, which enables the proposed approach to achieve good performance with much more efficiency. As demonstrated by the results of propagation in three scenarios with different degrees of complexity, compared with the Cartesian-based approach, the proposed approach achieves comparable accuracy to the Monte Carlo method while largely reducing the number of components generated during propagation. Our results confirm that a judicious choice of coordinate representation can significantly improve the performance of uncertainty propagation methods in terms of accuracy and computational efficiency.

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Section: Introductionmentioning

confidence: 99%

Orbital Uncertainty Propagation Based on Adaptive Gaussian Mixture Model under Generalized Equinoctial Orbital Elements

Xie,

Xue,

et al. 2023

Remote Sensing

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A Computation Process for the Higher Order State Transition Tensors of the Gravity and Drag Perturbed Two-Body Problem Using Adaptive Analytic Continuation Technique

Tasif

Elgohary

2022

Computational and Experimental Simulations in Engineering

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Midcourse correction of Earth-Moon distant retrograde orbit transfer trajectories based on high-order state transition tensors

et al. 2023

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Exact Computation of High-Order State Transition Tensors for Perturbed Orbital Motion

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Cited by 9 publications

References 23 publications

Orbital Uncertainty Propagation Based on Adaptive Gaussian Mixture Model under Generalized Equinoctial Orbital Elements

Orbital Uncertainty Propagation Based on Adaptive Gaussian Mixture Model under Generalized Equinoctial Orbital Elements

A Computation Process for the Higher Order State Transition Tensors of the Gravity and Drag Perturbed Two-Body Problem Using Adaptive Analytic Continuation Technique

Midcourse correction of Earth-Moon distant retrograde orbit transfer trajectories based on high-order state transition tensors

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