Terra / ASTER

NASA's Terra satellite is mounted in 1999. It operates in a polar sun-synchronous orbit at 705 km above the Earth's surface, crossing the equator on descending passes at 10.30 AM. There are five seperate modules on the satellite. It has 14 bands which have high spatial, spectral, and radiometric resolution. The image size is 60 x 60 km.

Band Spectral Range ( µm) Spatial Resolution (m)
1 0.52-0.60 15
2 0.63-0.69 15
3 0.78 - 0.86 15
3N 0.78 - 0.86 15
4 1.60-1.70 30
5 2.145-2.185 30
6 2.185-2.225 30
7 2.235-2.285 30
8 2.295-2.365 30
9 2.360-2.430 30
10 8.125-8.475 90
11 8.475-8.825 90
12 8.925-9.275 90
13 10.25-10.95 90
14 10.95-11.65 90

Stereoscopic Image

 

ASTER is capable of stereoscopic imaging in the near infrared band. One of the 2 sensors which is in near-infrared spectral range looks backwards, while the other is perpendicular to the ground. With this feature stereoscopic viewing is obtained.

Digital Elevation Model

 

It is possible to generate digital elevation model (DEM) by means of sensors which have different perspectives.

Short-Wave Infrared

 

6 Short-wave infrared (SWIR) bands are used directly or indirectly in lithological mapping in earth science studies.

Thermal Infrared

 

Thermal Infrared (TIR) encompasses 5 band ranges. In addition to information on surface temperature, it is also used in lithological mapping.  Thermal imaging is based on the principle of heat dissipation of all objects that is over the value of absolute zero temperaturte value

 

Contact

  • Adress: Üniversiteler Mahallesi Dumlupınar Bulvarı No:139 06800 Çankaya/ANKARA
  • Tel: (0312) 201 10 00 Pbx
  • Fax      : (0312) 287 91 88
  • E-Mail: mta@mta.gov.tr

              

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