Measuring Gravitational Acceleration Using X-Ray Pulsars for Deep Space Navigation Algorithm Initialization

Kyle J. Houser and Demoz Gebre-Egziabher

Abstract:	A method for measuring gravitational acceleration using x-ray pulsars is presented. Using a Maximum Likelihood Estimator, x-ray photon arrival times are processed to generate position, velocity and acceleration measurements. This method is validated in simulation. To determine how well this estimator can perform, a Cramer-Rao lower bound analysis is presented.
Published in:	Proceedings of the 37th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2024) September 16 - 20, 2024 Hilton Baltimore Inner Harbor Baltimore, Maryland
Pages:	2015 - 2030
Cite this article:	Houser, Kyle J., Gebre-Egziabher, Demoz, "Measuring Gravitational Acceleration Using X-Ray Pulsars for Deep Space Navigation Algorithm Initialization," Proceedings of the 37th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2024), Baltimore, Maryland, September 2024, pp. 2015-2030. https://doi.org/10.33012/2024.19925
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