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Dawn Orbit Determination Team: Trajectory Modeling and Reconstruction Processes at VestaThe Dawn spacecraft spent over a year in orbit around Vesta from July 2011 through August 2012. In order to maintain the designated science reference orbits and enable the transfers between those orbits, precise and timely orbit determination was required. Challenges included low-thrust ion propulsion modeling, estimation of relatively unknown Vesta gravity and rotation models, track-ing data limitations, incorporation of real-time telemetry into dynamics model updates, and rapid maneuver design cycles during transfers. This paper discusses the dynamics models, filter configuration, and data processing implemented to deliver a rapid orbit determination capability to the Dawn project.
Document ID
20150007226
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Abrahamson, Matthew J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ardito, Alessandro
(ARPSOFT S.r.l. Rome, Italy)
Han, Dongsuk
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Haw, Robert
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kennedy, Brian
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mastrodemos, Nick
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Nandi, Sumita
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Park, Ryan
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rush, Brian
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Vaughan, Andrew
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 4, 2015
Publication Date
February 10, 2013
Subject Category
Astrodynamics
Report/Patent Number
AAS 13-479F
Meeting Information
Meeting: AAS/AIAA Spaceflight Mechanics Meeting
Location: Kauai, HI
Country: United States
Start Date: February 10, 2013
End Date: February 14, 2013
Sponsors: American Inst. of Aeronautics and Astronautics, American Astronautical Society
Distribution Limits
Public
Copyright
Other
Keywords
low thrust
ion propulsion
model flight path
Kalman filter

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