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Small body landing accuracy using in-situ navigation

Show simple item record Bhaskaran, Shyam Nandi, Sumita Broschart, Stephen Wallace, Mark Olson, Corwin Cangahuala, L. Alberto 2011-10-21T16:51:13Z 2011-10-21T16:51:13Z 2011-02-04
dc.identifier.citation AAS Guidance, Navigation, and Control Meeting, Breckenridge, Colorado, February 4, 2011. en_US
dc.identifier.clearanceno 11-0341
dc.description.abstract Spacecraft landings on small bodies (asteroids and comets) can require target accuracies too stringent to be met using ground-based navigation alone, especially if specific landing site requirements must be met for safety or to meet science goals. In-situ optical observations coupled with onboard navigation processing can meet the tighter accuracy requirements to enable such missions. Recent developments in deep space navigation capability include a self-contained autonomous navigation system (used in flight on three missions) and a landmark tracking system (used experimentally on the Japanese Hayabusa mission). The merging of these two technologies forms a methodology to perform autonomous onboard navigation around small bodies. This paper presents an overview of these systems, as well as the results from Monte Carlo studies to quantify the achievable landing accuracies by using these methods. Sensitivity of the results to variations in spacecraft maneuver execution error, attitude control accuracy and unmodeled forces are examined. Cases for two bodies, a small asteroid and on a mid-size comet, are presented. 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, 2011. en_US
dc.relation.ispartofseries AAS en_US
dc.relation.ispartofseries 11-056 en_US
dc.subject small body navigation en_US
dc.subject in-situ navigation en_US
dc.title Small body landing accuracy using in-situ navigation en_US
dc.subject.NASATaxonomy Statistics and Probability en_US
dc.subject.NASATaxonomy Computer Operations and Hardware en_US

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