Determining spacecraft orientation using information from two jointly processed star trackers

1Efimenko, NV
1Research and Production Enterprise SMC «Hartron-Ucom ltd», Zaporizhzhya, Ukraine
Kosm. nauka tehnol. 2014, 20 ;(3):22-27
Section: Spacecraft Dynamics and Control
Publication Language: Russian

We consider the problem to increase the accuracy of determining spacecraft orientation using information obtained from two jointly processed star trackers. One of the trackers is the main one. Its information is specified by the second tracker. A mathematical model of the main star tracker error is constructed and an error correction algorithm of using second star tracker is proposed. We present some results of numerical simulation of the algorithms

Keywords: spacecraft orientation, two jointly processed star trackers

1. Goncharskii A.V., Leonov A.S., Yagola A.G.  A generalized discrepancy principle. USSR Computational Mathematics and Mathematical Physics, 13(2), 294—302 (1973) [in Russian].
2. Efimenko N.V. Mutual relations of internal coordinate systems of star sensors in the problem of accurate determination of spacecraft orientation. Kosm. nauka tehnol., 19 (6), 12 —17 (2013) [in Russian].
3. Tihonov A. N., Arsenin V. Ja. Methods of solving of noncorrected problems, 286 p. (Nauka, Moscow, 1986) [in Russian].
4. Horn R.A., Johnson Ch.R. Matrix Analysis: Transl. from Eng., 655 p. (Mir, Moscow, 1989) [in Russian].
5. Mortari D. EULER-q algorithm for attitude determination from vector observations.  J. Guidance, Control, and Dynamics.  21(2), 328—334 (1998). 
6. Mortari D. Second estimator of the optimal quaternion.   J. Guidance, Control, and Dynamics.  23(5), 885—888 (2000). 
7. Rupert P. SMART — a three-axis stabilized attitude reference technique.  J.Spacecraft and Rockets.  8, 1195—1201 (1971). 
8. Shuster M. D. Effective – direction measurements for spacecraft attitude: II. Predicted directions.  J. Astronaut. Sci.  55(4), 479—492 (2007).
9. Zanetti R., Bishop R. H. A new method to introduce a priori information in QUEST.  J. Astronaut. Sci.  55(4), 451—461 (2007).