Estimation of asteroid model parameters using particle filters

Brian Gaudet, Roberto Furfaro

Research output: Contribution to journalConference articlepeer-review


Planning of open-loop maneuvers in an asteroid's dynamic environment requires the ability to estimate the forces acting on the spacecraft as a function of position and time. These forces can be estimated using a mathematical model of the asteroid provided that the model parameters may be accurately inferred. In this paper we demonstrate how a particle filter can quickly and accurately estimate these model parameters using the spacecraft's average commanded thrust whilst hovering at two locations in close proximity to the asteroid. The accuracy of the particle filter is then compared to that of two state of the art optimization algorithms. We also show how this method can easily be extended to estimate internal gradients in the asteroid's density.

Original languageEnglish (US)
Pages (from-to)915-932
Number of pages18
JournalAdvances in the Astronautical Sciences
StatePublished - 2013
Event23rd AAS/AIAA Space Flight Mechanics Meeting, Spaceflight Mechanics 2013 - Kauai, HI, United States
Duration: Feb 10 2013Feb 14 2013

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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