Parker Solar Probe FIELDS: Search Coil Magnetometer Cross Spectra, Level 2

Parker Solar Probe FIELDS instrument cross spectra data from the Digital Fields Board's search coil magnetometer. The Level 2 data products contain calibrated power spectral densities, coherence, and phase for magnetic field and voltage signals, expressed in sensor coordinates. Data is provided by NASA and was last updated in March 2026.

Use Cases

• Analyzing solar wind turbulence power spectra based on calibrated magnetic field data.
• Studying wave coherence and phase relationships between sensor components mentioned in the description.
• Investigating high-frequency noise characteristics based on the described digital filter compensation effects.
• Comparing magnetic field measurements across different sensor coordinate systems ([d,e,f] vs [u,v,w]) as described for different solar orbits.

Strengths

• Data is calibrated for multiple instrument responses including DFB gain, analog/digital filters, and search coil preamplifier.
• Cross spectra include multiple derived quantities: power spectral densities, real/imaginary cross terms, coherence, and phase.
• Data is part of a structured Level 2 product from the NASA Parker Solar Probe mission.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Voltage sensor data lacks corrections for plasma sheath impedance and antenna effective length, as noted for Level 2 products.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Collected by the FIELDS experiment's Digital Fields Board on the Parker Solar Probe spacecraft.

Time Range

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

Freshness

Last updated 2026-03-13 08:03:09.808502; freshness should be verified.

Geography

Data collected in the near-Sun environment by the Parker Solar Probe spacecraft.