CHINA'S HIGH-RESOLUTION EARTH OBSERVATION SYSTEM (CHEOS): ADVANCES AND PERSPECTIVES

From the end of the "Eleventh Five-Year Plan", China had implemented a major project for a high-resolution Earth observation system, and completed all satellite launch tasks by 2020. CHEOS aims to build an Earth observation system with high spatial, temporal and spectral resolution in an all-round way, and actively meet the major national strategic needs of China's national defense, natural resource survey, disaster response and prevention. CHEOS has promoted the continuous maturity of high-resolution Earth observation technology in China and the wide application of high-resolution images. This paper reviews the development history of CHEOS, analyzes the technical characteristics and application status of the GF (means high resolution in Chinese) series of civil satellites, discusses the current problems and future development trends of CHEOS, and provides a reference for the subsequent promotion and application of the GF series satellites.