Skip to main content
U.S. flag

An official website of the United States government

GPM GROUND VALIDATION DUAL-FREQUENCY DUAL-POLARIZED DOPPLER RADAR (D3R) IPHEX V1

Published by NASA/MSFC/GHRC | National Aeronautics and Space Administration | Catalog Last Checked: May 26, 2026 at 07:00 PM | Dataset Last Updated: July 17, 2025
The GPM Ground Validation Dual-frequency Dual-polarized Doppler Radar (D3R) IPHEx data set contains radar reflectivity and doppler velocity measurements. The D3R was developed by a government-industry-academic consortium with funding from NASA's Global Precipitation Measurement (GPM) Project. It operates at the ku (13.91 GHz ± 25 MHz) and ku (35.56 GHz ± 25 MHz) frequencies covering a fixed range from 450 m to 39.75 km. The instrument's data are available in netCDF-4 format with browse imagery available in PNG format.

Resources

10 resources available

  • Get a related visualization

    HTML
    Download

  • Get a related visualization

    PNG
    Download

  • Download this dataset

    HTML
    Download

  • View information related to this dataset

    HTML
    Download

  • The dataset's project home page

    HTML
    Download

  • View documentation related to this dataset

    HTML
    Download

  • View the primary investigator's documentation for this dataset

    PDF
    Download

  • View the primary investigator's documentation for this dataset

    PDF
    Download

  • Google Scholar search results

    HTML
    Download

  • View documentation related to this dataset

    PDF
    Download

Find Related Datasets

Search by Tags

Click any tag below to search for similar datasets

Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "026:00"
]
contactPoint 
{
  "fn": "undefined",
  "@type": "vcard:Contact",
  "hasEmail": "mailto:support-ghrc@earthdata.nasa.gov"
}
description The GPM Ground Validation Dual-frequency Dual-polarized Doppler Radar (D3R) IPHEx data set contains radar reflectivity and doppler velocity measurements. The D3R was developed by a government-industry-academic consortium with funding from NASA's Global Precipitation Measurement (GPM) Project. It operates at the ku (13.91 GHz ± 25 MHz) and ku (35.56 GHz ± 25 MHz) frequencies covering a fixed range from 450 m to 39.75 km. The instrument's data are available in netCDF-4 format with browse imagery available in PNG format.
distribution 
[
  {
    "@type": "dcat:Distribution",
    "title": "Get a related visualization",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Browse Imagery",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/iphex/D3R/browse/"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Get a related visualization",
    "format": "PNG",
    "mediaType": "image/png",
    "description": "Browse Sample",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/iphex/D3R/browse/2014-05-01/ka_clutterfilter_off/iphex_d3r_ka_20140501_184519_01_rhi_291az_zdb.png"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Download this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Files may be downloaded directly to your workstation from this link",
    "downloadURL": "https://search.earthdata.nasa.gov/search?q=gpmd3riphx"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View information related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "IPHEx Field Campaign Collection DOI",
    "downloadURL": "http://dx.doi.org/10.5067/GPMGV/IPHEX/DATA101"
  },
  {
    "@type": "dcat:Distribution",
    "title": "The dataset's project home page",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "IPHEx Field Campaign Project Home Page",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/home/field-campaigns/iphex"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Instructions for citing GHRC data",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/home/about-ghrc/citing-ghrc-daac-data"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View the primary investigator's documentation for this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "Realization of the NASA Dual-frequency Dual-polarized Doppler Radar (D3R)",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/uso/ds_docs/gpmgv/d3r/Vega_D3R_igarss_2010.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View the primary investigator's documentation for this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "Scientific and Engineering Overview of the NASA Dual-frequency Dual-polarized Doppler Radar (D3R) System for GPM Ground Validation",
    "downloadURL": "http://ghrc.nsstc.nasa.gov/uso/ds_docs/gpmgv/d3r/Chandra_D3R_igarss_2010.pdf"
  },
  {
    "@type": "dcat:Distribution",
    "title": "Google Scholar search results",
    "format": "HTML",
    "mediaType": "text/html",
    "description": "Search results for publications that cite this dataset by its DOI.",
    "downloadURL": "https://scholar.google.com/scholar?q=10.5067%2FGPMGV%2FIPHEX%2FD3R%2FDATA101"
  },
  {
    "@type": "dcat:Distribution",
    "title": "View documentation related to this dataset",
    "format": "PDF",
    "mediaType": "application/pdf",
    "description": "The guide document contains detailed information about the dataset",
    "downloadURL": "https://ghrc.nsstc.nasa.gov/pub/fieldCampaigns/gpmValidation/iphex/D3R/doc/gpmd3riphx_dataset.pdf"
  }
]
identifier C1981506869-GHRC_DAAC
issued 2016-05-16
keyword 
[
  "atmosphere",
  "earth-science",
  "precipitation",
  "radar",
  "spectral-engineering"
]
landingPage https://doi.org/10.5067/GPMGV/IPHEX/D3R/DATA101
language 
[
  "en-US"
]
modified 2025-07-17
programCode 
[
  "026:001"
]
publisher 
{
  "name": "NASA/MSFC/GHRC",
  "@type": "org:Organization"
}
spatial -81.9632 35.1959 -81.9631 35.1959
temporal 2014-05-01T17:21:53Z/2014-06-15T13:27:28Z
theme 
[
  "IPHEx",
  "geospatial"
]
title GPM GROUND VALIDATION DUAL-FREQUENCY DUAL-POLARIZED DOPPLER RADAR (D3R) IPHEX V1

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov