The Superficial Study of Visible Light and Infrared Calibration

With the development of the remote sensing technology, people are paying more attention to the application of the satellite images. And the manipulation of the images becomes a vital step. In the procedure of the acquirement of remote sensing data, the aberration inevitably appears in the images due to miscellaneous factors. In order to get the real images, we must correct the images. This article introduces the factors of radiation aberration and the methods of radiometric calibration from two aspects: radiometric calibration of VIS and of TIR, and emphasizes three ways of radiometric calibration site. The reasons of aberration of NOAA AVHRR were analysed and calibrated with the three methods respectly. The result proved that the irradiance method is idealer.