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65 cm, Bi-stereoscopic, Optical, Laser Altimeter

GF-7 (short for Gaofen-7) was launched on November 3, 2019. It is a very high-resolution optical imaging satellite, and collects bi-stereoscopic and panchromatic-multispectral imagery. It is also equipped one laser altimeter. The satellite collects overlap images and enables 1:10,000-scale stereoscopic mapping. Its laser altimeter provides great supports in mapping difficult geographic terrains. The satellite mainly applies in monitoring land resources, basic mapping, and investigating globally geographic features.

  Technical Specifications
   Mission life      8 years
   Weight      2800 kg
   Launch time      November. 3, 2019
   Orbit       Sun-synchronous, 10:30 am descending node, 506 km altitude
   Sensor bands       Panchromatic, blue, green, red and near-infrared
   Resolution (at nadir)      Panchromatic: 80 cm (front camera), 65 cm (rear camera);
  multi-spectral: 2.6 m (rear camera)
   Locational accuracy      20 m CE90 (w/o GCPs)
   Dynamic range at imaging      11 bits
   Swath width (at nadir)       20 km (at nadir)
   Revisit capacity      5 days

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