@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/3e8bc0c6-f599-4e23-9535-449af00edd61>
  skos:prefLabel "IRS (Indian Remote Sensing Satellite)"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/b1734eeb-aa26-471d-9300-694c80aa8b42> .

<https://gcmd.earthdata.nasa.gov/kms/concept/b1734eeb-aa26-471d-9300-694c80aa8b42>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """The Indian Remote Sensing Satellite-1B (IRS-1B) was launched on August 8, 1991, from Tyuratan, U.S.S.R..  IRS-1B continues the series of Earth resources remote sensing satellites developed by Indian Space Research Organisation (ISRO) for land-based applications such as agriculture, forestry, geology, and hydrology. The spacecraft is a box-shaped 1.6 x 1.56 x 1.1 meter bus with two Sun-tracking solar arrays of 8.5 square meters each. Two nickel cadmium batteries provide power during eclipses. The three-axis stabilize sun-synchronous satellite had a 0.4 degree pitch/roll and 0.5 degree yaw pointing accuracy provided by a zero-momentum reaction wheel system utilizing Earth/Sun/star sensors and gyros. The satellite carried three Linear Imaging Self-Scanning (LISS) push-broom CCD sensors operating in four spectral bands compatible with Landsat Thematic Mapper and Spor HRV data. The bands were 0.45 - 0.52, 0.52 - 0.59, 0.62 - 0.68, and 0.77 - 0.86 microns. The LISS 1 sensor had four 2048-element CCD imagers with a focal length of 162.2 cm generating a resolution of 72.5 meters and a 148 km swath width. The LISS 2A/B sensors had eight 2048-element CCD imagers with a focal length of 324.4 mm generating a ground resolution of 36.25 meters and a 74 km swath width. The two LISS 2 imagers bracketed the LISS 1 imager providing a 3 km overlap. Data from the LISS 1 were downlinked on S-band at 5.2 Mbps and from the LISS 2 A/B at 10.4 Mbps to the ground station at Shandnager, India. The satellite was controlled from Bangalore, India.


Group: Platform_Details
   Entry_ID: IRS-1B
   Group: Platform_Identification
      Platform_Category: Earth Observation Satellites
      Platform_Series_or_Entity: IRS (Indian Remote Sensing Satellite)
      Short_Name: IRS-1B
      Long_Name: Indian Remote Sensing Satellite-1B
   End_Group
   Group: Synonymous_Platform_Names
      Short_Name: IRS-IB
   End_Group
   Group: Platform_Associated_Instruments
      Short_Name: LISS-I
      Short_Name: LISS-II
   End_Group
   Group: Orbit
      Orbit_Altitude: 904 km
      Orbit_Inclination: 99 deg
      Period: 103 min
      Repeat_Cycle: 22 days
      Perigee: 887 km
      Apogee: 922 km
      Orbit_Type: LEO > Low Earth Orbit > Polar Sun-Synchronous
   End_Group
   Creation_Date: 2007-10-05
   Online_Resource: http://www.isro.gov.in/satellites/irs-1b.aspx
   Sample_Image: http://www.isro.gov.in/satellites/images/irs-1b_img.gif
   Group: Platform_Logistics
      Launch_Date: 1991-08-08
      Launch_Site: Baikonur Cosmodrome, Tyuratam, Russia
      Primary_Sponsor: India
   End_Group
End_Group"""@en ;
  skos:prefLabel "IRS-1B"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/platforms> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/3e8bc0c6-f599-4e23-9535-449af00edd61> ;
  a skos:Concept .