ANALYSIS OF SCATTERED SIGNAL IN GEOSATIONARY METEOROLOGICAL SATELLITE IMAGE

The images of infrared, water vapor and visible channel from GMS 5 raw data and GMS 5, FY-2A, FY-2B S-VISSR data are analyzed by using method of pseudo color enhancement and histogram. Some scattered signals are found in the images of three Geostationary satellites, FY-2A, FY-2B and GMS 5. This problem completely depends on the optimize of the optical structure of the spin scan radiometer. When S-VISSR data are produced in real time, it is possible that scattered signals within cold space area of the image can be reduced or eliminated, but it is more difficult to eliminate those in the image of earth area.