Time series of calibrated and pre-processed accelerometer observations and of aerodynamic accelerations
Thematic areas: Acceleration measurements, Thermosphere
Applicable missions: Swarm
Applicable spacecraft: Swarm-C
Time series of calibrated accelerometer data, pre-processed to represent external non-gravitational forces and aerodynamic accelerations
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(delivered separately)
| Variable | Units | Description | Dim | Type |
|---|---|---|---|---|
| time | - | Time of observation | 1 | CDF_EPOCH |
| acc_aero_obs | m/s/s | Measured Aerodynamic linear acceleration in S/C X-direction | 1 | CDF_DOUBLE |
| acc_total_obs | m/s/s | Calibrated measured linear acceleration in S/C X-direction, with outliers removed | 1 | CDF_DOUBLE |
| Product identifier | ACCx_AE_2_ |
| Definition | Time series of calibrated accelerometer data, pre-processed to represent external non-gravitational forces and aerodynamic accelerations |
| Input Data | SC_xDYN_1B, STRxATT_1B, SP3xCOM_2_, ACCxCAL_2_, ACCxPOD_2_, AUX_F10_2_, AUX_KP__2_ |
| External data from IERS | |
| Input Time Span | 24 hr |
| Spatial representation | Time-series along satellite track, altitude (m), latitude (deg), longitude (deg) and local solar time (hours) available based on MODX_SC_1B |
| Time representation | UTC (seconds ? s), nominally with 10 s time step |
| Units | nm/s2 for accelerations, s for time, m for altitude, degrees for latitude, longitude, hours for local solar time |
| Resolution | 64 bit double precision floating point number format |
| Uncertainty | N/A |
| Quality indicator | Validation report TDAxVAL_2_ |
| Data volume | < 10 Mbyte per satellite per day |
| Output Data | CDF file with time series |
| Output time span | 24 hr |
| Update rate | 3 months |
| Latency | 1 month |
| Notes | The applied accelerometer bias and scale factors are available in the metadata. |
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