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

Michael A. Shoemaker, Shinji Hokamoto

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

4 被引用数 (Scopus)

抄録

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.

本文言語英語
ホスト出版物のタイトルASTRODYNAMICS 2011 - Advances in the Astronautical Sciences
ホスト出版物のサブタイトルProceedings of the AAS/AIAA Astrodynamics Specialist Conference
ページ23-36
ページ数14
出版ステータス出版済み - 12 1 2012
イベント2011 AAS/AIAA Astrodynamics Specialist Conference, ASTRODYNAMICS 2011 - Girdwood, AK, 米国
継続期間: 7 31 20118 4 2011

出版物シリーズ

名前Advances in the Astronautical Sciences
142
ISSN(印刷版)0065-3438

その他

その他2011 AAS/AIAA Astrodynamics Specialist Conference, ASTRODYNAMICS 2011
国/地域米国
CityGirdwood, AK
Period7/31/118/4/11

All Science Journal Classification (ASJC) codes

  • 航空宇宙工学
  • 宇宙惑星科学

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