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Integrated autonomous optical navigation using Q-Learning extended Kalman filter

Integrated autonomous optical navigation using Q-Learning extended Kalman filter This paper aims to improve the performance of the autonomous optical navigation using relativistic perturbation of starlight, which is a promising technique for future space missions. Through measuring the change in inter-star angle due to the stellar aberration and the gravitational deflection of light with space-based optical instruments, the position and velocity vectors of the spacecraft can be estimated iteratively.Design/methodology/approachTo enhance the navigation performance, an integrated optical navigation (ION) method based on the fusion of both the inter-star angle and the inter-satellite line-of-sight measurements is presented. A Q-learning extended Kalman filter (QLEKF) is designed to optimize the state estimate.FindingsSimulations illustrate that the integrated optical navigation outperforms the existing method using only inter-star angle measurement. Moreover, the QLEKF is superior to the traditional extended Kalman filter in navigation accuracy.Originality/valueA novel ION method is presented, and an effective QLEKF algorithm is designed for information fusion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology: An International Journal Emerald Publishing

Integrated autonomous optical navigation using Q-Learning extended Kalman filter

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References (27)

Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
1748-8842
eISSN
1748-8842
DOI
10.1108/aeat-05-2021-0139
Publisher site
See Article on Publisher Site

Abstract

This paper aims to improve the performance of the autonomous optical navigation using relativistic perturbation of starlight, which is a promising technique for future space missions. Through measuring the change in inter-star angle due to the stellar aberration and the gravitational deflection of light with space-based optical instruments, the position and velocity vectors of the spacecraft can be estimated iteratively.Design/methodology/approachTo enhance the navigation performance, an integrated optical navigation (ION) method based on the fusion of both the inter-star angle and the inter-satellite line-of-sight measurements is presented. A Q-learning extended Kalman filter (QLEKF) is designed to optimize the state estimate.FindingsSimulations illustrate that the integrated optical navigation outperforms the existing method using only inter-star angle measurement. Moreover, the QLEKF is superior to the traditional extended Kalman filter in navigation accuracy.Originality/valueA novel ION method is presented, and an effective QLEKF algorithm is designed for information fusion.

Journal

Aircraft Engineering and Aerospace Technology: An International JournalEmerald Publishing

Published: Apr 26, 2022

Keywords: Q-learning extended Kalman filter; Autonomous navigation; Spacecraft; Relativistic perturbations

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