{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Earthdata Forum", "hasEmail": "mailto:earthdata-support@nasa.gov"}, "description": "Terrestrial Reference Frame (TRF) product derived from the analysis of Very Long Baseline Interferometry (VLBI) data. The Terrestrial Reference Frame product includes station positions, velocities, and correlations. A minimum of three years of data are used in each solution. The TRF operational product is available quarterly at International VLBI Service for Geodesy and Astrometry (IVS) Data Centers.", "distribution": [{"@type": "dcat:Distribution", "downloadURL": "https://www.earthdata.nasa.gov/data/space-geodesy-techniques/vlbi/data-products-holdings", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://cddis.nasa.gov/archive/vlbi/ivsproducts/", "format": "BIN", "mediaType": "application/octet-stream"}, {"@type": "dcat:Distribution", "downloadURL": "https://doi.org/10.5067/VLBI/vlbi_trf_products_001", "format": "HTML", "mediaType": "text/html"}, {"@type": "dcat:Distribution", "conformsTo": "http://www.isotc211.org/2005/gmi", "description": "The metadata's original source.", "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C2404809434-CDDIS.iso19115", "format": "ISO", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "10.5067/VLBI/vlbi_trf_products_001", "keyword": ["earth-science-coordinate-reference-system-solid-earth-geodetics-coordinate-reference-system-glo"], "license": "https://www.usa.gov/government-works", "modified": "2026-04-06", "programCode": ["026:000"], "publisher": {"@type": "org:Organization", "name": "CDDIS"}, "spatial": "[[{\"NorthBoundingCoordinate\":90,\"WestBoundingCoordinate\":-180,\"EastBoundingCoordinate\":180,\"SouthBoundingCoordinate\":-90}],\"GEODETIC\"]", "theme": ["Earth Science"], "title": "Very Long Baseline Interferometry (VLBI) Terrestrial Reference Frame (TRF) products from NASA CDDIS"}