@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/f55d156c-adbc-47db-a69c-981afbaa0cf6>
  skos:changeNote """2019-02-22 13:16:56.0 [mmorahan]  
insert WeightedRelation (id: null
related concept uuid: 6120cea0-c943-4c7c-bddd-8d8648d58022
relationship type: null
relationship value: null
generated by: null); 
""" ;
  ns0:altLabel [ ] ;
  skos:definition """The Advanced SCATterometer (ASCAT) is a real aperture radar operating at 5.255 GHz (C-band) and using vertically polarised antennas. It transmits a long pulse with Linear Frequency Modulation (&#145;chirp&#146;). Ground echoes are received by the instrument and, after de-chirping, the backscattered signal is spectrally analysed and detected. In the power spectrum, frequency can be mapped into slant range provided the chirp rate and the Doppler frequency are known. The above processing is in effect a pulse compression, which provides range resolution. 

The instrument was developed under ESA/EUMETSAT contract by EADS Astrium GmbH in Friedrichshafen, Germany.


Group: Instrument_Details
   Entry_ID: ASCAT
   Group: Instrument_Identification
      Instrument_Category: Earth Remote Sensing Instruments
      Instrument_Class: Active Remote Sensing
      Instrument_Type: Scatterometers
      Short_Name: ASCAT
      Long_Name: Advanced Scatterometer
   End_Group
   Group: Associated_Platforms
      Short_Name: METOP-B
      Short_Name: METOP-A
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: Microwave
   End_Group
   Online_Resource: http://manati.orbit.nesdis.noaa.gov/datasets/ASCATData.php/
   Online_Resource: http://manati.orbit.nesdis.noaa.gov/products/ASCAT.php
   Online_Resource: http://www.esa.int/esaME/ascat.html
   Online_Resource: http://www.esa.int/esaLP/SEMBWEG23IE_LPmetop_0.html
   Online_Resource: http://www.eumetsat.int/Home/Main/Satellites/Metop/Instruments/SP_2010053161611647?l=en
   Creation_Date: 2007-07-03
End_Group"""@en ;
  skos:prefLabel "ASCAT"@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 .

<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/f55d156c-adbc-47db-a69c-981afbaa0cf6> .