Abstract
To ensure the long-term on-orbit working precision of attitude sensors, to meet the high accuracy of three-axis attitude determination of satellite, a real-time on-orbit calibration algorithm for gyros and star sensors is proposed. Considering several error sources during satellite attitude measure, a model of gyros and star sensors alignment error and scale factor error is constructed for compensating those errors. First of all it calibrates the star sensors, then it calibrates the gyros using the results of the first step. This algorithm can improve gyros' and star sensors' precision efficiently, comparing with the other calibration algorithms, it provides more information for satellite attitude determination. Simulation results indicate the availability and feasibility of the on-orbit calibration algorithm.
| Original language | English |
|---|---|
| Pages (from-to) | 2112-2116 |
| Number of pages | 5 |
| Journal | Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics |
| Volume | 27 |
| Issue number | 12 |
| State | Published - Dec 2005 |
Keywords
- Attitude determination
- Gyros
- On-orbit calibration
- Star sensor
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