PSP FIELDS Digital Fields Board, DFB, Search Coil Magnetometer data:
The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft, see reference [1] below. For a full description of the FIELDS experiment, see reference [2]. For a description of the DFB, see reference [3].
The DFB continuous waveform data consist of time series data from various FIELDS sensors. These data have been filtered by both analog and digital filters [3].
The Level 2 data products contained in this data file have been calibrated for:
Calibrations for the DFB digital filter gain response have not been implemented, but the required convolution kernel is provided in this file. It was decided not to apply the digital filter gain response calibration to these Level 2 data because the application of the calibrations can introduce non-physical power at high frequencies when the non-corrected signal is dominated by noise. This effect should be examined carefully when determining spectral slopes and features at the highest frequencies. Calibrations for the FIELDS voltage sensor preamplifiers have not been implemented as the preamplifier response is flat and equal to one throughout the DFB frequency range. Corrections for plasma sheath impedance gain and antenna effective length have not been applied to the voltage sensor data. These corrections will be applied in the Level 3 DFB data products. Therefore, all voltage sensor quantities when present in these Level 2 data products are expressed by using units of Volts. Likewise, all magnetic field quantities when present in these Level 2 data products are expressed by using units of nanoTelsas.
The Level 2 data products contained in this data file are in spacecraft coordinates (e.g. x,y,z) or in sensor coordinates (e.g. dV12, dV34 for voltage measurements and [u,v,w] for the searchcoil magnetometer.
The time resolution of the DFB continuous waveform data can vary by multiples of 2^N. During encounter when PSP is within 0.25 AU of the Sun, the DFB continuous waveform data cadence is typically 256 samples/NYsecond [2].
References:
Version:2.3.1
PSP FIELDS Digital Fields Board, DFB, Search Coil Magnetometer data:
The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft, see reference [1] below. For a full description of the FIELDS experiment, see reference [2]. For a description of the DFB, see reference [3].
The DFB continuous waveform data consist of time series data from various FIELDS sensors. These data have been filtered by both analog and digital filters [3].
The Level 2 data products contained in this data file have been calibrated for:
Calibrations for the DFB digital filter gain response have not been implemented, but the required convolution kernel is provided in this file. It was decided not to apply the digital filter gain response calibration to these Level 2 data because the application of the calibrations can introduce non-physical power at high frequencies when the non-corrected signal is dominated by noise. This effect should be examined carefully when determining spectral slopes and features at the highest frequencies. Calibrations for the FIELDS voltage sensor preamplifiers have not been implemented as the preamplifier response is flat and equal to one throughout the DFB frequency range. Corrections for plasma sheath impedance gain and antenna effective length have not been applied to the voltage sensor data. These corrections will be applied in the Level 3 DFB data products. Therefore, all voltage sensor quantities when present in these Level 2 data products are expressed by using units of Volts. Likewise, all magnetic field quantities when present in these Level 2 data products are expressed by using units of nanoTelsas.
The Level 2 data products contained in this data file are in spacecraft coordinates (e.g. x,y,z) or in sensor coordinates (e.g. dV12, dV34 for voltage measurements and [u,v,w] for the searchcoil magnetometer.
The time resolution of the DFB continuous waveform data can vary by multiples of 2^N. During encounter when PSP is within 0.25 AU of the Sun, the DFB continuous waveform data cadence is typically 256 samples/NYsecond [2].
References:
| Role | Person | |
|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Stuart.D.Bale |
| 2. | MetadataContact | spase://SMWG/Person/Robert.M.Candey |
| 3. | MetadataContact | spase://SMWG/Person/Lee.Frost.Bargatze |
Parker Solar Probe, PSP, FIELDS Instrument Suite Description: Bale, S.D., Goetz, K., Harvey, P.R. et al., The FIELDS Instrument Suite for Solar Probe Plus, Space Sci Rev 204, 49–82 (2016)
Parker Solar Probe, PSP, FIELDS Instrument Suite, Digital Fields Board, DFB, Description: Malaspina, D.M., Ergun, R.E., Bolton, M. et al., The Digital Fields Board for the FIELDS Instrument Suite on the Solar Probe Plus Mission: Analog and Digital signal Processing, JGR Space Physics, 121, 5088-5096 (2016)
Parker Solar Probe, PSP, FIELDS Instrument Suite, Data Description, Spacecraft Operations Center, SOC, Web Site, UC Berkeley
Parker Solar Probe, PSP, FIELDS Instrument Suite, Rules of the Road, Spacecraft Operations Center, SOC, Web Site, UC Berkeley
Parker Solar Probe, PSP, Mission Overview, hosted by the Applied Physics Laboratory, Johns Hopkins University
Access to Data in CDF Format via ftp from SPDF
Access to Data in CDF Format via http from SPDF
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Epoch Time Tags in Terrestrial Time 2000, TT2000, for Digital Filter Bank, DFB, Searchcoil Magnetometer, SCM, Magnetic Field, B, Waveform, High Gain, HG
Digital Filter Bank, DFB, Searchcoil Magnetometer, SCM, Magnetic Field, B, Waveform, High Gain, HG, Sensor Coordinates, Cartesian
Digital Filter Bank, DFB, Searchcoil Magnetometer, SCM, Magnetic Field, B, Waveform, High Gain, HG, Spacecraft, SC, Coordinates, Cartesian
Packet Timestamp, for Digital Filter Bank, DFB, Searchcoil Magnetometer, SCM, Magnetic Field, B, Waveform, High Gain, HG
Sample Rate assigned to Digital Filter Bank, DFB, Searchcoil Magnetometer, SCM, Magnetic Field, B, Waveform, High Gain, HG
Noise Floor, Digital Filter Bank, DFB, Searchcoil Magnetometer, SCM, Magnetic Field, B, Waveform, High Gain, HG, in Sensor Coordinates, Cartesian, (u,v,w)
Digital Filter Kernel, real part, 293 Hz
Digital Filter Kernel, imaginary part, 293 Hz
Digital Filter Kernel, real part, 146 Hz
Digital Filter Kernel, imaginary part, 146 Hz
Digital Filter Kernel, real part, 73 Hz
Digital Filter Kernel, imaginary part, 73 Hz
Digital Filter Kernel, real part, 37 Hz
Digital Filter Kernel, imaginary part, 37 Hz
Digital Filter Kernel, real part, 18 Hz
Digital Filter Kernel, imaginary part, 18 Hz
Digital Filter Kernel, real part, 9 Hz
Digital Filter Kernel, imaginary part, 9 Hz
Digital Filter Kernel, real part, 5 Hz
Digital Filter Kernel, imaginary part, 5 Hz
Digital Filter Kernel, real part, 2 Hz
Digital Filter Kernel, imaginary part, 2 Hz
Epoch Time Tags in Terrestrial Time 2000, TT2000, for FIELDS Instrument Suite, Data Quality Flags
FIELDS Instrument Suite, Data Quality Flags