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ATIITUDE DETERMINATION SYSTEM COMPONENTS
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| Control and syncronization unit (CSU), pcs. | 1 or 2 |
| Star tracker (ST), pcs. | 2 to 4 |
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ONBOARD UNIT PLACEMENT REQUIREMENTS
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SPECIFICATIONS
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| Number of star trackers | 3 |
| Number of control and syncronization units | 2 |
| 3-axis attitude determination error, arcsec | 1 |
| Data lag, ms, max | 100 |
| Angular speed measurement error, arcsec | 1 |
| Minimal angular distance between Sun and star tracker LOS, º | 30 |