Wednesday, 10 July 2013

Geoeye-1


Geoeye-1 has four bands with wavelength range (0.450- 0.800 micrometer) in Pan, (0.450-0.520) in Blue, (0.510-0.580) in green, (0.655-0.690) in Red and (0.780 - 0.920) in Near Infra red. 

Spatial resolution of its panchromatic is 50 cm and 80 cm for multi spectral, ...
Swath width is 11.3 - 15.2 km at nadir
Orbital Altitude is Approximately 682 km at nadir view
*Revisit period: ............

figure above geometric condition of IKONOS
dL = dh * tan (local nadir angle)

By using its metadata we can extract information like Image acquisition date and time, Solar (sun zenith and azimuth) or Satellite (Nominal collection azimuth and zenith). Panchromatic and Multi spectral resolution (both cross and along scan). Percent of Cloud cover also extracted from GEOEYE metadata (......metadata.txt).
Other parameter like sensor, map projection, product pixel size and bits per pixel. As you can see from this metadata below we can extract information like image type, interpolation method, projection, Product Order Pixel Size, etc.
:
:
Sensor Type: Satellite
Sensor Name: GeoEye-1
Product Line: Geo
Processing Level: Georeference, Standard Radiometric and Orthorectified Correction
Image Type: Pan-sharpened Natural Colour
Interpolation Method: Cubic Convolution
Multispectral Algorithm: Local Projective
Stereo: Mono
Mosaic: No
Map Projection: Universal Transverse Mercator
   UTM Specific Parameters
      Hemisphere: S
      Zone Number: 52
Datum: WGS84
Product Order Pixel Size: 0.5000000000 meters
Product Order Map Units:  meters
MTFC Applied: Yes
DRA Applied: No
Media: HD, DVD
Product Media Format: HD, DVD
File Format: GeoTIFF
   TIFF Tiled: No
   Compressed: No
   Bits per Pixel per Band: 11 bits per pixel
Multispectral Files: BGRN
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