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CDDIS_VLBI_data

Metadata Updated: December 7, 2023

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.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date February 1, 2023
Metadata Updated Date December 7, 2023

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date February 1, 2023
Metadata Updated Date December 7, 2023
Publisher NASA/GSFC/SED/ESD/GGL/CDDIS
Maintainer
Identifier C1000000043-CDDIS
Data First Published 1982-01-01
Language en-US
Data Last Modified 2012-06-14
Category IVS, geospatial
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Citation Archived by National Aeronautics and Space Administration, U.S. Government, NASA/GSFC/SED/ESD/GGL/CDDIS.
Harvest Object Id 703b6ee0-4a0c-433f-b9d1-c143c71102f3
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1000000043-CDDIS.html
Metadata Type geospatial
Old Spatial -180.0 -90.0 180.0 90.0
Program Code 026:001
Source Datajson Identifier True
Source Hash 3e1973bd963ccf45a6c0adff2f3e59f378c99312e31dbdf1009c60c2140c1b93
Source Schema Version 1.1
Spatial
Temporal 1979-08-03T00:00:00Z/2022-01-17T00:00:00Z

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