Inactive space object shape estimation via astrometric and photometric data fusion

Richard Linares, Moriba K. Jah, John L. Crassidis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations


This paper presents a method to determine the shape of a space object in orbit while simultaneously recovering the observed space object's inertial orientation and trajectory. This work studies a shape estimation approach based on octant triangulation applied to light curve and angles data fusion. The filter employs the Unscented estimation approach, reducing passively-collected electro-optical data to infer the unknown state vector comprised of the space object inertial-to-body orientation, position and their respective temporal rates. Recovering these characteristics and trajectories with sufficient accuracy is shown in this paper. The performance of this strategy is demonstrated via simulated scenarios.

Original languageEnglish (US)
Title of host publicationSpaceflight Mechanics 2012 - Advances in the Astronautical Sciences
Subtitle of host publicationProceedings of the 22nd AAS/AIAA Space Flight Mechanics Meeting
Number of pages16
StatePublished - 2012
Event22nd AAS/AIAA Space Flight Mechanics Meeting - Charleston, SC, United States
Duration: Feb 2 2012Feb 2 2012

Publication series

NameAdvances in the Astronautical Sciences
ISSN (Print)0065-3438


Other22nd AAS/AIAA Space Flight Mechanics Meeting
Country/TerritoryUnited States
CityCharleston, SC


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