Extraction De La Température De Surface De La Terre À Partir D’une Image Satellitaire

Résumé: Remote sensing is a powerful tool for determining low attenuation of solar radiation at the earth. Remote sensing thermal infrared essentially comprise measuring the radiation emitted by the Earth from space. The first step of the extraction temperature is calculated brightness temperature. The correction comprises raw satellite images called HRPT (High Resolution Picture Transmission), coded on 8 bits, covering the areas of the visible and thermal infrared. First work pretreatment on these raw images, in fact Radiometric Calibration (radiometric calibration) of NOAA-HRPT satellite pictures. After actually the geometric correction to the geometric space observed an irregular surface .The images show distortions in all dimensions of space. Geometric correction corrects the distortion of the image for the satellite image sensor. The objective is to work with the Split-Windows algorithm to search for the Earth's land surface temperature at the base of these satellite pictures. Split-Windows method uses two channels of the thermal infrared 4 and 5 to calculate the surface temperature, with the use of the coefficients and preset values for a satellite. In the end compare the results obtained with temperature maps of HRPT satellite image the other year.

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