Geometric correction of HDF MODIS file by IDL
2016-08-23
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Application background
Remote sensing imaging, due to the attitude of the spacecraft, height, speed and the rotation of the earth, factors of influence, resulting in images with respect to ground target geometric distortion and the distortion performance for pixel with respect to the actual location of the ground targets occurred extrusion, twist, tensile and offset etc., for geometric distortion error correction is called geometric correction.Key Technology
Principle of the system is first read the HDF the latitude and longitude data set, then establish 51*51 GCP control point, through the GCP projection conversion of angle data set and the radiometric calibration of scientific data sets are geometric correction. In the process of geometric correction, the angular data is sampled from the angle of the 1000*1000 resolution, so as to find the angle data when the aerosol inversion is carried out.others
IDL
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校正
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