NASA Launches $855 Million Landsat Mission
Satellite Remote Sensing has been a regular first step for the mineral and petroleum exploration industry. Satellite imagery from satellite sensors corresponding to GeoEye-1, WorldView-2, QuickBird, IKONOS, ASTER and LANDSAT 7 +ETM have benefited geologists, scientists and exploration managers in earth sciences because of the benefit of huge scale mapping and the sensors containing multiple band colours which permits them to interpret wavelengths that can not be seen by the human eye, equivalent to close to infrared, short wave infrared and thermal infrared to identify the difference in structural features of the earth’s surface.
There may be nothing improper about these values. The numbers are greater than those from previous Landsat satellites, as a result of the sensor has greater radiometric resolution (can distinguish rather more than 256 levels of gray in each band). Thus, it isn’t attainable to retailer the values in 8bit integer numbers (zero-255) without information loss, … Read the rest