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Orbit Determination for UWE-4 based on Magnetometer and Sun Sensor Data using Equinoctial Orbital Elements
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
2017 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

An autonomous, real-time orbit determination system was developed within thiswork for the next iteration of the University of W¨urzburg’s CubeSat programme.The algorithm only made use of magnetometer and sun sensors, which already wereimplemented on UWE-3, the third satellite in the programme. Previous developedsystems used the same approach, however the unique aspect in this work is thatthe algorithm was implemented using equinoctial elements.A Runge-Kutta-4 integrator propagated the orbit position using the orbit dynamicsunder the consideration of J2-perturbations. Afterwards, an Extended KalmanFilter corrected the position through processing the two measurements.The algorithm was then tested under multiple conditions. At first, a two weekstability test was conducted using simulated data, followed by a test with recordedsatellite data. These have shown a mean error of 13.2 km and 12.6 km respectively.Lastly, the algorithm was translated in to C and evaluated on a micro-controller.

Place, publisher, year, edition, pages
2017.
Keywords [en]
Extended Kalman Filter, Orbit Determination, UWE-4, Magnetometer, Sun Sensor
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-61551OAI: oai:DiVA.org:ltu-61551DiVA, id: diva2:1067017
External cooperation
University of Wuerzburg
Educational program
Space Engineering, master's level (120 credits)
Supervisors
Examiners
Available from: 2017-01-24 Created: 2017-01-23 Last updated: 2017-01-24Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
  • rtf