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Altair Navigation during trans-lunar cruise, lunar orbit, descent and landing

Show simple item record Ely, Todd A. Heyne, Martin Ried, Joseph E. 2015-04-22T17:00:46Z 2015-04-22T17:00:46Z 2010-08-02
dc.identifier.citation AIAA Guidance, Navigation, and Control Conference 2010, Toronto, Ontario, August 2-5, 2010 en_US
dc.identifier.clearanceno 10-2490
dc.description.abstract The Altair lunar lander navigation system is driven by a set of requirements that not only specify a need to land within 100 m of a designated spot on the Moon, but also be capable of a safe return to an orbiting Orion capsule in the event of loss of Earth ground support. These requirements lead to the need for a robust and capable on-board navigation system that works in conjunction with an Earth ground navigation system that uses primarily ground-based radiometric tracking. The resulting system relies heavily on combining a multiplicity of data types including navigation state updates from the ground based navigation system, passive optical imaging from a gimbaled camera, a stable inertial measurement unit, and a capable radar altimeter and velocimeter. The focus of this paper is on navigation performance during the trans-lunar cruise, lunar orbit, and descent/landing mission phases with the goal of characterizing knowledge and delivery errors to key mission events, bound the statistical delta V costs for executing the mission, as well as the determine the landing dispersions due to navigation. This study examines the nominal performance that can be obtained using the current best estimate of the vehicle, sensor, and environment models. Performance of the system under a variety sensor outages and parametric trades is also examined. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject lunar lander en_US
dc.title Altair Navigation during trans-lunar cruise, lunar orbit, descent and landing en_US
dc.type Preprint en_US

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