Article: Fault-tolerant estimation of satellite orbital states Journal: International Journal of Sustainable Aviation (IJSA) 2021 Vol.7 No.3 pp.203 - 226 Abstract: This paper is devoted to global positioning system (GPS)-based fault-tolerant satellite orbital states estimation which is used for the pseudo-ranging model. GPS is widely used by many researchers to determine the orbit state vectors of satellites, but errors in GPS measurements can cause major errors in satellite location detection. Therefore, there is a need for an architecture that will resist possible measurement errors and GPS malfunctions. This study aims to present the novel approaches to tolerate the errors that may take place in GPS measurements. The satellite localisation has been detected via a pseudo-ranging model between four GPS satellites and the target satellite. The Keplerian equations and orbit elements are used for the satellite dynamic model with orbital J2 perturbation which is due to the flattened shape of the earth is taken into account via the extended Kalman filter (EKF) algorithms. The reconfigurable and the adaptive version of fault-tolerant localisation architecture eliminate the GPS measurement errors during estimating satellite position vectors. The comparison of the prediction architectures of the fault tolerant satellite state vectors originally proposed. At the same time, it is possible to use fault tolerant architectures designed to detect whether GPS satellites are malfunctioning or not. Inderscience Publishers - linking academia, business and industry through research

Title: Fault-tolerant estimation of satellite orbital states

Authors: Tuncay Yunus Erkeç; Chingiz Hajiyev

Addresses: Department of Space Sciences, Hezarfen Aeronautics and Space Technologies Institute, National Defence University, Yeşilyurt/Istanbul, 34149, Turkey ' Faculty of Aeronautics and Astronautics, Istanbul Technical University, Maslak/Istanbul 34469, Turkey

Abstract: This paper is devoted to global positioning system (GPS)-based fault-tolerant satellite orbital states estimation which is used for the pseudo-ranging model. GPS is widely used by many researchers to determine the orbit state vectors of satellites, but errors in GPS measurements can cause major errors in satellite location detection. Therefore, there is a need for an architecture that will resist possible measurement errors and GPS malfunctions. This study aims to present the novel approaches to tolerate the errors that may take place in GPS measurements. The satellite localisation has been detected via a pseudo-ranging model between four GPS satellites and the target satellite. The Keplerian equations and orbit elements are used for the satellite dynamic model with orbital J2 perturbation which is due to the flattened shape of the earth is taken into account via the extended Kalman filter (EKF) algorithms. The reconfigurable and the adaptive version of fault-tolerant localisation architecture eliminate the GPS measurement errors during estimating satellite position vectors. The comparison of the prediction architectures of the fault tolerant satellite state vectors originally proposed. At the same time, it is possible to use fault tolerant architectures designed to detect whether GPS satellites are malfunctioning or not.

Keywords: satellite localisation; global positioning system; GPS; fault-tolerant Kalman filter; adaptive Kalman filter; AKF; orbital localisation; extended Kalman filter; EKF.

DOI: 10.1504/IJSA.2021.119170

International Journal of Sustainable Aviation, 2021 Vol.7 No.3, pp.203 - 226

Received: 03 Jan 2021
Accepted: 31 May 2021
Published online: 26 Nov 2021 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article

Title: Fault-tolerant estimation of satellite orbital states

Keep up-to-date