@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/563f30c8-43f8-48be-b649-4b548f877fa4>
  skos:prefLabel "Scatterometers"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/6e24a235-4813-44dd-8be0-0c74e6898e15> .

<https://gcmd.earthdata.nasa.gov/kms/concept/6e24a235-4813-44dd-8be0-0c74e6898e15>
  skos:changeNote """2019-12-19 08:39:32.0 [mmorahan] Insert Concept 
add broader relation (OSCAT [6e24a235-4813-44dd-8be0-0c74e6898e15,559561] - Scatterometers [563f30c8-43f8-48be-b649-4b548f877fa4,544135]); 
""", """2019-12-19 08:45:39.0 [mmorahan]  
insert AltLabel (id: null
category: primary
text: OceanSat Scatterometer
language code: en); 
insert Definition (id: null
text: OSCAT is an active microwave device designed and developed at ISRO/SAC, Ahmedabad. The objective is to monitor ocean surface wind speed and directions. The instrument is a pencil beam wind scatterometer operating at Ku-band of 13.515 GHz. OSCAT is being utilized for the estimation of the radar backscattered power and subsequent local and global wind vector (velocity magnitude and direction) retrieval over the ocean, from the normalized radar cross-section (σo), for cell resolution grids of 25 km x 25 km over a swath of 1400 km. The aim is to provide global ocean coverage and wind vector retrieval with a revisit time of 2 days.

The scanning configuration of OSCAT, similar in design to Seawinds of NASA, offers the advantages like simpler onboard payload, better radar backscatter cross section (σo) measurement and directional accuracy, continuous and wider swath with no nadir gaps, less complex signal processing and reduced data rates, smaller and lighter onboard instrument and simplified wind retrieval model compared to conventional multiple fan beam scatterometers.
language code: en); 
insert WeightedRelation (id: null
related concept uuid: df967339-0096-4445-8732-0071f1de9e27
relationship type: null
relationship value: null
generated by: null); 
""" ;
  ns0:altLabel [ ] ;
  skos:definition """OSCAT is an active microwave device designed and developed at ISRO/SAC, Ahmedabad. The objective is to monitor ocean surface wind speed and directions. The instrument is a pencil beam wind scatterometer operating at Ku-band of 13.515 GHz. OSCAT is being utilized for the estimation of the radar backscattered power and subsequent local and global wind vector (velocity magnitude and direction) retrieval over the ocean, from the normalized radar cross-section (σo), for cell resolution grids of 25 km x 25 km over a swath of 1400 km. The aim is to provide global ocean coverage and wind vector retrieval with a revisit time of 2 days.

The scanning configuration of OSCAT, similar in design to Seawinds of NASA, offers the advantages like simpler onboard payload, better radar backscatter cross section (σo) measurement and directional accuracy, continuous and wider swath with no nadir gaps, less complex signal processing and reduced data rates, smaller and lighter onboard instrument and simplified wind retrieval model compared to conventional multiple fan beam scatterometers."""@en ;
  skos:prefLabel "OSCAT"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/563f30c8-43f8-48be-b649-4b548f877fa4> ;
  a skos:Concept .