@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/824070fa-da29-40fa-ba17-f3d60584bd4d>
  skos:prefLabel "Imaging Radars"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/a37282d4-322c-4dd0-8edc-36099b9b586c> .

<https://gcmd.earthdata.nasa.gov/kms/concept/a37282d4-322c-4dd0-8edc-36099b9b586c>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """Synthetic Aperture Radar(SAR)provides the capability of acquiring imagery inclement weather or during night as well as day. SAR systems take advantage of the long-range propagation characteristics of radar signals and the complex information processing capability of modern digital electronics to provide high resolution imagery. Synthetic aperture radar complements photographic and other optical imaging capabilities because of the minimum constraints on time-of-day and atmospheric conditions and because of the unique responses of terrain and cultural targets to radar frequencies.

Synthetic aperture radar technology has provided terrain structural information to geologists for mineral exploration, oil spill boundaries on water to environmentalists, sea state and ice hazard maps to navigators, and reconnaissance and targeting information to military operations. There are many other applications or potential applications. Some of these, particularly civilian, have not yet been adequately explored because lower cost electronics are just beginning to make SAR technology economical for smaller scale uses. 

Sandia has a long history in the development of the components and technologies applicable to Synthetic Aperture Radar -- 40 years in radar, antenna, and miniature electronics development; 30 years in microelectronics; and 25 years in precision navigation, guidance, and digital-signal processing. Over the last decade, we have applied these technologies to imaging radars to meet the needs of advanced weapon systems; verification and nonproliferation programs; and environmental applications. Sandia's expertise in electromagnetics, microwave electronics, high-speed signal processing, and high performance computing and navigation, guidance and control have established us as world leaders in real-time imaging, miniaturization, processing algorithms, and innovative applications for SAR.


Additional information available at
http://www.sandia.gov/radar/sar.html

[Summary provided by Sandia National Laboratories]


Group: Instrument_Details
   Entry_ID: SAR
   Group: Instrument_Identification
      Instrument_Category: Earth Remote Sensing Instruments
      Instrument_Class: Active Remote Sensing
      Instrument_Type: Imaging Radars
      Short_Name: SAR
      Long_Name: Synthetic Aperture Radar
   End_Group
   Group: Associated_Platforms
      Short_Name: COSMO-SKYMED
      Short_Name: SEASAT 1
      Short_Name: RADARSAT-1
      Short_Name: JERS-1
      Short_Name: ERS-1
      Short_Name: AIRCRAFT
   End_Group
   Online_Resource: http://www.sandia.gov/radar/sar.html
   Sample_Image: http://www.sandia.gov/radar/images/3dsar.gif
   Creation_Date: 2008-07-31
   Group: Instrument_Logistics
      Instrument_Owner: Sandia National Laboratories
      Instrument_Owner: USA/NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "SAR"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/824070fa-da29-40fa-ba17-f3d60584bd4d> ;
  a skos:Concept .