REAL TIME CORRECTION METHOD FOR GEOSTATIONARY METEOROLOGICAL SATELLITE IMAGES

摘要

A method of real time correction of image data remotely detected by a radiation measuring instrument such as is used on rotationally stable geostationary satellites. The method comprises (1) predicting the correction parameters by a statistical analysis based on a number of previous images, (2) reading a limited number of raw image lines in order to facilitate the accurate setting of the South horizon or the North horizon, (3) determining the satellite's rotating speed from a limited number of raw image lines, (4) redefining the measuring instrument's orientation and aim parameters by using the horizon information obtained in real time, (5) computing the position of the other horizon and of the centre of the image on the basis of the horizon already detected, (6) creating a deformation matrix immediatly after determining the first horizon, and (7) correcting in real time the data of the image received immediately afterwards.