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Session D6: Navigation Using Environmental Features

Measuring Gravitational Acceleration Using X-Ray Pulsars for Deep Space Navigation Algorithm Initialization
Kyle J. Houser and Demoz Gebre-Egziabher, University of Minnesota
Date/Time: Friday, Sep. 20, 2:35 p.m.

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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.



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