Table 1 Time periods, datasets used, and number of parameters for Models A through E
From: Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters
A | B,C | D | E | |
|---|---|---|---|---|
Start date | 2000-07-20 | 2000-07-20 | 2000-07-20 | 2009-01-01 |
End date | 2019-12-31 | 2019-12-31 | 2019-12-31 | 2018-12-31 |
Datasets used | ||||
CHAMP | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | |
Swarm | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | |
Cryosat | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | |
DMSP | \(\checkmark\) | \(\checkmark\) | \(\checkmark\) | |
Observatories | \(\checkmark\) | |||
Number of parameters | ||||
time-dependent internal | 10 965 | 10 965 | 10 965 | 6120 |
static internal | 2345 | 2345 | 2345 | 0 |
alignment | 2715 | 2715 | 855 | 1860 |
calibration | 5580 | 5580 | 0 | 5580 |
total | 21 605 | 21 605 | 14 165 | 13 560 |