Magnetic vector and scalar data for monitoring and calibration purposes
Thematic areas: Magnetic measurements
Applicable missions: Swarm
Applicable spacecraft: Swarm-A, Swarm-B, Swarm-C
The MAGx_CA_1B Product contains magnetic calibration data for monitoring, verification, and re-estimation of calibration parameters. It contains raw as well as processed VFM vector measurements, VFM temperatures, and fully converted and corrected ASM measurements at 1 Hz rate. This is essentially the data used for the Temporal Calibration File (TCF.VFM) estimation but including also the raw VFM data.
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(delivered separately)
| Variable | Units | Description | Dim | Type |
|---|---|---|---|---|
| Timestamp | UTC | Time of observation | 1 | CDF_EPOCH |
| SyncStatus | - | Synchronization status | 1 | CDF_UINT2 |
| Latitude | deg | Position in ITRF - Latitude | 1 | CDF_DOUBLE |
| Longitude | deg | Position in ITRF - Longitude | 1 | CDF_DOUBLE |
| Radius | m | Position in ITRF - Radius | 1 | CDF_DOUBLE |
| F | nT | Magnetic field intensity | 1 | CDF_DOUBLE |
| dF_Sun | nT | Magnetic stray field correction of Sun induced perturbation at ASM sensor | 1 | CDF_DOUBLE |
| dF_AOCS | nT | Magnetic stray field correction intensity of AOCS magneto-torquer coils | 1 | CDF_DOUBLE |
| dF_other | nT | Magnetic stray field correction intensity of all other sources | 1 | CDF_DOUBLE |
| F_error | nT | Error estimate on magnetic field intensity | 1 | CDF_DOUBLE |
| F_VFM | nT | Magnetic field intensity from the VFM instrument,converted and corrected | 1 | CDF_DOUBLE |
| B | nT | Magnetic field vector, VFM frame | 3 | CDF_DOUBLE |
| dB_Sun | nT | Magnetic stray field correction vector of Sun induced perturbation, VFM frame | 3 | CDF_DOUBLE |
| dB_AOCS | nT | Magnetic stray field correction vector of AOCS magneto-torquer coils, VFM frame | 3 | CDF_DOUBLE |
| dB_other | nT | Magnetic stray field correction vector of all other sources, VFM frame | 3 | CDF_DOUBLE |
| B_pre | nT | Pre-calibrated VFM magnetic field vector, VFM frame, time Time+dt | 3 | CDF_DOUBLE |
| EU_VFM | eu | Raw VFM measuremet, time Time+dt_VFM | 3 | CDF_DOUBLE |
| T_CDC | C | Temperature of VFM CDC, time Time+dt_VFM | 1 | CDF_DOUBLE |
| T_CSC | C | Temperature of VFM CSC, time Time+dt_VFM | 1 | CDF_DOUBLE |
| T_EU | C | Temperature of VFM EU, time Time+dt_VFM | 1 | CDF_DOUBLE |
| dt_VFM | s | Time offset of VFM measurement | 1 | CDF_DOUBLE |
| alpha | deg | Solar inclination angle, rotation about y axis, S/C frame, time Time+dt | 1 | CDF_DOUBLE |
| beta | deg | Solar inclination angle, angle to y axis, S/C frame, time Time+dt | 1 | CDF_DOUBLE |
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Level 1B Product Descriptions:
Level 1B Product Format page:
Technical Notes:
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