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Full-Text Articles in Engineering
Angles-Only Ekf Navigation For Hyperbolic Flybys, Iggy Matheson
Angles-Only Ekf Navigation For Hyperbolic Flybys, Iggy Matheson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Space travelers in science fiction can drop out of hyperspace and make a pinpoint landing on any strange new world without stopping to get their bearings, but real-life space navigation is an art characterized by limited information and complex mathematics that yield no easy answers. This study investigates, for the first time ever, what position and velocity estimation errors can be expected by a starship arriving at a distant star - specifically, a miniature probe like those proposed by the Breakthrough Starshot initiative arriving at Proxima Centauri. Such a probe consists of nothing but a small optical camera and a …
Linear Covariance Analysis For Gimbaled Pointing Systems, Randall S. Christensen
Linear Covariance Analysis For Gimbaled Pointing Systems, Randall S. Christensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Linear covariance analysis has been utilized in a wide variety of applications. Historically, the theory has made significant contributions to navigation system design and analysis. More recently, the theory has been extended to capture the combined effect of navigation errors and closed-loop control on the performance of the system. These advancements have made possible rapid analysis and comprehensive trade studies of complicated systems ranging from autonomous rendezvous to vehicle ascent trajectory analysis. Comprehensive trade studies are also needed in the area of gimbaled pointing systems where the information needs are different from previous applications. It is therefore the objective of …