This system consists of a receiver,a real-time high speed interface and an image computer-processing subsystem. The main principle is that the GMS frame date are transmitted to the high-speed interface through, the demodulator and synchronizer. Then the buffered data are put into three files (i. e. document file, infrared and vissible files) and ingested in a hard disc with large capacity, at same time a selectable-1024 1024-pixel image is shown on the high resolution screen in the real-time and pseudocolor mode.