Oersted Mag-F: High Precision Magnetic Scalar Data

2019-05-05 12:34:56Z

This dataset contains 1 second measurements of the scalar magnetic field from the Overhauser Effect Scalar Magnetometer on the Oersted spacecraft.

Dr. Jose J Achache; Dr. Ib Laursen; The European Space Agency; Danish Meteorological Institute (Denmark); Danish Ministry of Commerce (Denmark); Danish Ministry of Transportation (Denmark); Centre National d'Etudes Spatiales (France); National Aeronautics and Space Administration (United States); Danish Ministry of Science (Denmark); Danish Space Research Institute (Denmark)

spase://VMO/NumericalData/Oersted/OESM/MAGF/PT1S

spase://VSPO/NumericalData/Oersted/OESM/MAGF/PT1S

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Text

Dr. Jose J Achache; Dr. Ib Laursen

PT1S

Universal Time

Time

Universal time columns from left to right are: year-month-day (yyyy-mm-dd) and seconds of the day.

PT1S

Oersted Spacecraft Position Vector in ECEF polar coordinates

Position Vectors

Location of the spacecraft in Earth Centered, Earth Fixed polar coordinates in units of Re and degrees.

PT1S

Information and quality flag relating to position.

Qpos

The bits have the following interpretation (bit 1 is least significant bit - LSB): 0 = poor quality, 1 = Good quality (below 25 m spatial).

PT1S

unitless

Magnetic Field Magnitude

F

Oersted Overhauser Effect Scalar Magnetometer Magnitude data.

PT1S

nT

Information and quality flag relating to F (scalar magnetic measurement).

Qf

Information and quality flag relating to F (scalar magnetic measurement). The bits of this CDF_UINT2 has the following interpretation (bit 1 is least significant bit - LSB):

1.  Frequency calibration: 0 = not applied (poor), 1 = applied (good).
2.  Has occasional time shifts: 0 = yes (poor), 1 = no (good).
3.  Spacecraft disturbance: 0 = ignored, 1 = compensated.
4.  Scalar magnetometer temperature information: 0 = unavailable, 1 = available.
5.  Not currently used = 0.
6.  Not currently used = 0.
7.  Not currently used = 0.
8.  Scalar derived from: 0 = Scalar magnetometer, 1 = Vector magnetometer.
9.  General vector data quality: 0 = poor, 1 = good.
10. Vector magnetometer sample rate: 0 = 25 Hz, 1 = 100 Hz.
11. Vector magnetometer temperature information: 0 = unavailable, 1 = available.
12. Not currently used = 0.
13. Torquer coils: 0 = on, 1 = off.
14. Torquer coils disturbance: 0 gt.equal.to 1nT, 1 lt.equal.to 1nT.
15. Scalar magnetometer power: 0 = on, 1 = off.
16. Not currently used = 0.

If bit 8 is set to 0 (Scalar magnetometer), one can rely on the bits 1-7. If bit 8 is is set to 1 (Vector magnetometer), one can rely on bits 9-16. Further information may be included in this field.
Example: QF = 12928 = 011001010000000b: Scalar derived from Vector magnetometer, scalar magnetometer on, torquer coils off (=>no disturbance), poor attitude, vector magnetometer temperature information unavailable, 100 Hz poor quality CSC data.
Example: To quickly identify Ovh samples (bit 8) do: if QF/28-1 is even then from Ovh.

PT1S

unitless