@prefix esado: <https://data.esa.int/esado/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix sosa: <http://www.w3.org/ns/sosa/> .

esado:
  rdfs:label "ESA Data Ontology"@en ;
  skos:prefLabel "ESA Data Ontology"@en ;
  a skos:ConceptScheme, owl:Ontology .

<https://earth.esa.int/concept/8b3263f8-68d0-5403-bb0c-0b8ee506ca33>
  sosa:isHostedBy <https://earth.esa.int/concept/a7adccea-4a39-5ebf-afd3-9608cd100f74> ;
  skos:exactMatch <https://gcmd.earthdata.nasa.gov/kms/concept/02a50e11-e6ee-4b05-a157-32cf57a74adf> ;
  rdfs:seeAlso <https://directory.eoportal.org/web/eoportal/satellite-missions/c-missions/cassiope> ;
  skos:broader <https://earth.esa.int/concept/300c4439-aac5-532b-9ffe-90a6e343dd99> ;
  skos:prefLabel "GAP"@en ;
  skos:inScheme esado: ;
  skos:definition """GAP (GPS Attitude and Positioning Experiment) instrument objective is to measure S/C velocity and attitude as well as TEC (Total Electron Content) of the ionosphere. The relative phase delay of signals in both the L1 and L2 bands from a GPS satellite occulted by the limb ionosphere provide large-scale (1000's of km) information on how the total electron content responds to magnetospheric perturbations. GAP consists of two components:
- GAP-A: Three single-frequency (L1) GPS receivers and four patch antennas. This package is being used to provide an accurate absolute time reference, spacecraft 3-D attitude, and post-processed spacecraft position and velocity.
- GAP-O: The objective is to provide ionospheric tomography observations."""@en ;
  a skos:Concept .

<https://earth.esa.int/concept/300c4439-aac5-532b-9ffe-90a6e343dd99>
  skos:prefLabel "GPS"@en ;
  a skos:Concept ;
  skos:narrower <https://earth.esa.int/concept/8b3263f8-68d0-5403-bb0c-0b8ee506ca33> .

<https://earth.esa.int/concept/a7adccea-4a39-5ebf-afd3-9608cd100f74>
  skos:notation "CA"@en ;
  skos:prefLabel "CASSIOPE"@en ;
  a skos:Concept ;
  sosa:hosts <https://earth.esa.int/concept/8b3263f8-68d0-5403-bb0c-0b8ee506ca33> .

<https://gcmd.earthdata.nasa.gov/kms/concept/02a50e11-e6ee-4b05-a157-32cf57a74adf>
  skos:prefLabel "GAP"@en ;
  a skos:Concept .