{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "NASA Space Physics Data Facility", "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"}, "description": "PWI>Plasma Wave Instrument Reference: Gurnett, D.A., et al., The Polar Plasma Wave Instrument, Space Science Reviews, Vol. 71, pp. 597-622, 1995. donald-gurnett@uiowa.edu An FFT on 2048 values was used in calibrating the data; i.e., perform FFT, calibrate in frequency domain, perform inverse FFT to get calibrated time series. The coordinate system used is local magnetic field-aligned, a spacecraft centered coordinate system where Z is parallel to the local B-field determined from Polar MFE, X points outward and lies in the plane defined by the Z-axis and the radial vector from the earth to the spacecraft, and Y completes a right-handed system and points eastward. The X- and Z-axes are contained in the north-south plane. Effective Bandwidth is 1.5*delta_f, where delta_f depends on the size of the FFT used to convert to the frequency domain, and delta_t. The unattenuated frequency range for this file type is 20Hz to 2000Hz. These data come in snapshots of 2048 samples per channel, every 128.8 seconds, with a cadence equal to the inverse of the sampling rate (4464 Hz), and individual time tags given in CDF TT2000 format. For a description of the PWI receivers and the different operational modes see https://space.physics.uiowa.edu/plasma-wave/polar/modes.html", "identifier": "https://doi.org/10.48322/32d0-db83", "keyword": ["auroral-hiss", "bernstein-waves", "cdf-global-attribute-adid_ref-nssd0171", "cdf-global-attribute-data_type-h4lhfwr-2khz-6-channels", "cdf-global-attribute-data_version-3", "cdf-global-attribute-discipline-space-physicsmagnetospheric-science", "cdf-global-attribute-mission_group-polar-cdf-global-attribute-mission_group-magnetospheric-data", "cdf-global-attribute-mods-created-mar-2021", "cdf-global-attribute-project-istpinternational-solar-terrestrial-physics", "chorus", "continuum-radiation", "electostatic-solitary-waves", "equatorial-noise", "esw", "ion-acoustic-waves", "langmuir-waves", "lower-hybrid-waves", "plasmaspheric-hiss", "upper-hybrid-waves", "waves-passive-cdf-global-attribute-title-polar-pwi-hfwr", "whistlers"], "landingPage": "https://doi.org/10.48322/32d0-db83", "license": "https://www.usa.gov/government-works", "modified": "2026-04-06", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "The University of Iowa Radio and Plasma Wave Group Data Repository;NASA Space Physics Data Facility (SPDF) Coordinated Data Analysis Web (CDAWeb) Data Services"}, "theme": ["Heliophysics"], "title": "Polar Plasma Wave Instrument, High Frequency Waveform Receiver, 2 kHz, Time Domain Fields"}