PSP FIELDS DFB: AC Voltage Spectra from Parker Solar Probe, Level 2

Level 2 calibrated power spectral density data from the Parker Solar Probe's FIELDS Digital Fields Board (DFB). The data, collected at frequencies below 75 kHz, are averaged over time and pseudo-logarithmic frequency bins and are expressed in sensor coordinates. This dataset is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Analyzing wave power spectral densities as a function of frequency and time based on the described spectral averaging.
• Studying differential voltage signals (e.g., dV34) in sensor coordinates for solar orbits 1 and 2.
• Investigating magnetic field spectral data in search coil sensor coordinates [u,v,w] for solar orbits 3 and beyond.
• Examining spectral slopes and high-frequency features, noting the described calibration effects on noise-dominated signals.

Strengths

• Data is calibrated for six specific factors including Hanning window, in-band gain, and analog/digital filter responses.
• Provides sensor-coordinate data for voltage (dV12, dV34) and magnetic field components, with a defined rotation matrix for early orbits.
• Last updated in March 2026, suggesting ongoing curation.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

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

Time Range

Covers solar orbits from at least orbit 1 onward.

Freshness

Last updated 2026-03 13 05:53:03.519996

Geography

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