PSP FIELDS DFB: Parker Solar Probe Search Coil Magnetometer Cross Spectra

Parker Solar Probe FIELDS instrument cross spectra data, calibrated for instrument gain and filter responses. The dataset contains power spectral densities, coherence, and phase for magnetic field and voltage signals, expressed in sensor-specific coordinates. Data is provided by NASA and includes Level 2 calibrated products with units of nanoTesla squared per Hertz or Volts squared per Hertz.

Use Cases

• Analyzing plasma wave power spectra based on the provided power spectral density data.
• Studying wave coherence and phase relationships between sensor channels.
• Investigating magnetic field fluctuations in sensor coordinates [d,e,f] or [u,v,w].
• Calibrating and validating instrument responses for high-frequency noise trends.

Strengths

• Data is calibrated for multiple instrument responses including Hanning window, analog/digital filter gains, and search coil preamplifier.
• Provides both auto-spectra and cross-spectra terms (real, imaginary, coherence, phase) as functions of frequency and time.
• Managed by NASA, a recognized authority in space science data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Voltage sensor data lacks corrections for plasma sheath impedance and antenna effective length, applied only in Level 3 products.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the Digital Fields Board (DFB) component of the FIELDS experiment on the Parker Solar Probe spacecraft.

Time Range

Covers solar orbits, with coordinate systems differing for orbits 1-2 versus orbit 3+.

Freshness

Last updated 2026-03-13 05:49:09.209537; freshness should be verified.

Geography

Data collected in space, specifically from the Parker Solar Probe's trajectory near the Sun.