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Design and validation of a trajectory estimation system for the Hayabusa sample return capsule
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics.
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2010 (English)In: Spaceflight Mechanics 2010, Pts I-III, Univelt, Inc , 2010, 375-394 p.Conference paper (Refereed)
Abstract [en]

The Japanese Hayabusa spacecraft will return to Earth in summer, 2010, carrying samples from asteroid Itokawa. Because the sample return capsule will reenter the atmosphere at night, the capsule and surrounding air will appear as a bright light (i.e., "fireball") during the portion of the trajectory with high aerodynamic heating. Kyushu University, in collaboration with the Japan Aerospace Exploration Agency, is developing a ground-based optical sensor system to observe the reentry and estimate the vehicle's trajectory. This paper describes the design and validation currently underway for the proposed system, in preparation for operations in mid-2010. An Extended Kalman Filter (EKF) is used to estimate the capsule's position and velocity, as well as a scale factor on the atmospheric density. Simulations of the EKF show that the capsule's state at the end of the visible portion of the trajectory (i.e., at approximately 25 km altitude) can be estimated with a 1-s uncertainty of 60 m in position and 8 m/s in velocity.

Place, publisher, year, edition, pages
Univelt, Inc , 2010. 375-394 p.
, Advances in the Astronautical Sciences, ISSN 0065-3438 ; 136
Keyword [en]
Ground based, Japan Aerospace Exploration Agency, Sample return capsule, Scale Factor, Trajectory estimation, Atmospheric density, Earth (planet), Estimation, Mechanics, Space flight, Space research, Spacecraft, Uncertainty analysis, Trajectories
National Category
Vehicle Engineering
URN: urn:nbn:se:kth:diva-150287ISI: 000290282400023ScopusID: 2-s2.0-80053389358ISBN: 978-0-87703-560-2OAI: diva2:742952
AAS/AIAA Space Flight Mechanics Meeting, 14 February 2010 through 17 February 2010, San Diego, CA, United States

QC 20140903

Available from: 2014-09-03 Created: 2014-09-01 Last updated: 2014-09-03Bibliographically approved

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Chamboredon, Guillaume
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