Application of wide-field integration of optic flow to proximity operations and landing for space exploration missions

Michael A. Shoemaker, Shinji Hokamoto

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

4 Citations (Scopus)

Abstract

New advances in vision-based navigation for micro air vehicles (MAVs) have been inspired by the biological systems of flying insects and the use of optic flow. These biologically-inspired optical sensor systems for MAVs are computationally efficient and have low mass and low power consumption, which makes them attractive for small spacecraft. This study explores the applicability of the wide-field integration (WFI) of optic flow to a spacecraft operating in close proximity to an asteroid. In contrast with past WFI work, this study uses an asteroid-relative reference trajectory and known a priori environment model such that the optimal sensitivity functions are recalculated onboard the vehicle at each time step. Numerical simulations with computer-generated images of the asteroid surface are used to estimate the vehicle's translational and angular velocities. Although the accuracy of these state estimates are reasonable considering the noise in the optic flow measurements, the onboard recalculation of the sensitivity functions for this time-varying scenario add computational burden which negates the main advantage of the WFI method. Hence, future applications to time-invariant scenarios for small-body missions are also discussed.

Original languageEnglish
Title of host publicationASTRODYNAMICS 2011 - Advances in the Astronautical Sciences
Subtitle of host publicationProceedings of the AAS/AIAA Astrodynamics Specialist Conference
Pages23-36
Number of pages14
Publication statusPublished - Dec 1 2012
Event2011 AAS/AIAA Astrodynamics Specialist Conference, ASTRODYNAMICS 2011 - Girdwood, AK, United States
Duration: Jul 31 2011Aug 4 2011

Publication series

NameAdvances in the Astronautical Sciences
Volume142
ISSN (Print)0065-3438

Other

Other2011 AAS/AIAA Astrodynamics Specialist Conference, ASTRODYNAMICS 2011
CountryUnited States
CityGirdwood, AK
Period7/31/118/4/11

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

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    Shoemaker, M. A., & Hokamoto, S. (2012). Application of wide-field integration of optic flow to proximity operations and landing for space exploration missions. In ASTRODYNAMICS 2011 - Advances in the Astronautical Sciences: Proceedings of the AAS/AIAA Astrodynamics Specialist Conference (pp. 23-36). (Advances in the Astronautical Sciences; Vol. 142).