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Table 1
Characteristics of the simulated input data and demonstration solution.
| Quantity | Value |
|
|
|
| Duration of science mission | 5.0 yr |
| Number of sources | 2 256 222 |
| Number of along-scan (AL) observations | 1.625 × 109 |
| Number of across-scan (AC) observations | 1.805 × 108 |
| Standard uncertainty per AL/AC observation (representative): | |
| G ≤ 13 | 92 μas/520 μas |
| G = 15 | 230 μas/1350 μas |
| G = 17 | 590 μas/4000 μas |
| G = 18 | 960 μas/7600 μas |
| G = 19 | 1600 μas/16 000 μas |
| G = 20 | 2900 μas/38 000 μas |
| Number of astrometric parameters | 1.128 × 107 |
| Number of attitude spline knots | 6.575 × 105 |
| Number of attitude parameters | 2.630 × 106 |
| Number of calibration parameters | 7812 |
| Number of global parameters | 1 |
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