Attitude determination and control system design of the ITU-UUBF LEO1 satellite

Ch Hajiyev*, M. Bahar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


In this paper an attitude determination and control system for ITU-UUBF LEO1 satellite is proposed. To determine the attitude of the satellite this system uses algebraic method (2-vector algorithm). As a reference direction, the unit vectors toward the Sun and the Earth's center, and the Earth's magnetic field are used. Thus, it includes three different 2-vector algorithms based on using Earth's magnetic field-Sun vector, Earth's magnetic field-nadir vector, and nadir vector-Sun vector couples. A redundant data processing algorithm based on maximum likelihood was designed. The parameters of satellite's rotational motion are estimated using extended Kalman filter (EKF). For control purposes an EKF-based PD controller is designed. To reveal the performance of the designed system a simulation is made.

Original languageEnglish
Pages (from-to)493-499
Number of pages7
JournalActa Astronautica
Issue number2-6
Publication statusPublished - Jan 2003


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