Covariance Analysis of Three-Axis Attitude Determination Using Two Vector Measurements


Cilden D., CONGUROGLU E. S., Hajiyev C.

7th International Conference on Recent Advances in Space Technologies (RAST), İstanbul, Türkiye, 16 - 19 Haziran 2015, ss.701-706 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/rast.2015.7208432
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.701-706
  • Anahtar Kelimeler: attitude determination, algebraic method, SVD method, covariance analysis, vector measurement
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Two different methods are compared to estimate attitude in this study. These methods are Single Value Decomposition (SVD) solving Wahba's problem optimally and Algebraic Method using two vector measurements. Selected spacecraft data is used for orbit propagation. Magnetometer and Sun sensor are chosen for this work, also the mathematical models and the measurement models of these sensors are used for the actual value and the measurement values. Simulations are done and the covariance for two methods are calculated. According to the calculations comparison is made between these two methods. And as expected, it is seen that SVD method is more accurate than Algebraic Method.