Table 3
Comparison of the final formal errors obtained with the two types of observables, when applying constant weight values.
| Parameters | Formal errors with | Ratio | |
|---|---|---|---|
| Central | Alternative | ||
| instants [1] | observables [2] | [2]/[1] | |
 |
7.01 km | 11.2 km | 1.6 |
 |
10.4 km | 17.6 km | 1.7 |
 |
14.5 km | 37.3 km | 2.6 |
 |
0.372 m s−1 | 1.30 m s−1 | 3.5 |
 |
0.373 m s−1 | 0.904 m s−1 | 2.4 |
 |
0.562 m s−1 | 1.86 m s−1 | 3.3 |
 |
2.31 km | 6.24 km | 2.7 |
 |
13.6 km | 20.5 km | 1.5 |
 |
26.3 km | 49.1 km | 1.9 |
 |
0.191 m s−1 | 0.535 m s−1 | 2.8 |
 |
0.222 m s−1 | 0.851 m s−1 | 3.8 |
 |
0.454 m s−1 | 1.75 m s−1 | 3.9 |
Notes. The final errors are expressed in satellites’ central body-centred cartesian coordinates. The central instants solution is obtained with a constant weight
s (see Sect. 3.3). For the alternative observables, we use the average of the individual weights defined by Eq. (41): σalt. = 8.87 × 10−3 mas s−1.
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