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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Supporting Information for Very Long Baseline Interferometry (VLBI) Data and Products from NASA CDDIS

    Metadata Updated: February 22, 2025

    Very Long Baseline Interferometry (VLBI) is a geometric technique: it measures the time difference between the arrival at two Earth-based antennas of a radio wavefront emitted by a distant quasar. VLBI precisely locates points on Earth by comparing radio signals from a quasar radio source located in deep space received at different times at different Earth ground stations. This method gives relative positions of the Earth stations. VLBI data can be used to calculate information on Earth rotation, length of day, polar motion, baseline and velocities of stations. Products generated by VLBI contribute to research in many areas, including solid Earth, tides, studies of the vertical, fundamental astronomy, and VLBI technique improvement. More information about these data and products are available on the CDDIS website at https://cddis.nasa.gov/Data_and_Derived_Products/VLBI/VLBI_data_and_product_archive.html.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date February 22, 2025
    Metadata Updated Date February 22, 2025

    Metadata Source

    Harvested from nasa test json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date February 22, 2025
    Metadata Updated Date February 22, 2025
    Publisher CDDIS
    Maintainer
    Identifier C1708952717-CDDIS
    Data First Published 1979-01-01
    Language en-US
    Data Last Modified 2025-02-19
    Category IVS, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 9fdc048b-4471-4e15-85e7-cb7f49de42a5
    Harvest Source Id a73e0c30-4684-40ef-908e-d22e9e9e5f86
    Harvest Source Title nasa test json
    Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1708952717-CDDIS.html
    Metadata Type geospatial
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 9310e51a589bbd5d85be683032be6b1294168309c724c6ae9a12becead6bb1eb
    Source Schema Version 1.1
    Temporal 1979-01-01T00:00:00Z/2024-11-11T00:00:00Z

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