{
  "@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",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "downloadURL": "ftps://spdf.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h4",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PO_H4_PWI&index=sp_phys",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://cdaweb.gsfc.nasa.gov/hapi",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://helio.data.nasa.gov/dataset/POLAR_PWI_LHFWR_2kHz_PT0.000224S",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://hpde.io/NASA/NumericalData/POLAR/PWI/LHFWR/2kHz/PT0.000224S",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://space.physics.uiowa.edu/plasma-wave/polar/data.html",
      "format": "HTML",
      "mediaType": "text/html"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://space.physics.uiowa.edu/plasma-wave/polar/po_h4_pwi/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h4",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    }
  ],
  "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",
    "cdf-global-attribute-title-polar-pwi-hfwr",
    "chorus",
    "continuum-radiation",
    "electostatic-solitary-waves",
    "equatorial-noise",
    "esw",
    "ion-acoustic-waves",
    "langmuir-waves",
    "lower-hybrid-waves",
    "plasmaspheric-hiss",
    "upper-hybrid-waves",
    "waves-passive",
    "whistlers"
  ],
  "landingPage": "https://doi.org/10.48322/32d0-db83",
  "license": "https://www.usa.gov/government-works",
  "modified": "2026-09-21",
  "programCode": [
    "026:000"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "RadioPlasmaWaveGroup, CDAWeb"
  },
  "theme": [
    "Heliophysics"
  ],
  "title": "Polar Plasma Wave Instrument, High Frequency Waveform Receiver, 2 kHz, Time Domain Fields"
}