System Design and Technical Characteristics of Fengyun-3E Meteorological Satellite

Fengyun-3E(FY-3E) satellite is the first early morning orbit meteorological satellite for civil use in the world. It operates in the sun-synchronous orbit whose nominal altitude is 836 km and local time of descending node is 05:30–05:50. It is equipped with eleven payloads, which can realize comprehensive detection of various spectral bands from extreme ultraviolet, ultraviolet, visible, infrared to microwave. All-band absolute radiometric calibration in orbit has been realized on FY-3E satellite, with the calibration error of infrared band up to 0.4 K, microwave band up to 0.8 K, and visible near-infrared band up to 5%. FY-3E satellite can provide images, clouds and radiation, atmospheric parameters, sea and land surface, space weather and other products, which are important supporting data for weather forecast, climate monitoring and environmental disaster monitoring. This paper introduces the system design scheme of FY-3E satellite, summarizes the main technical features of the satellite, and looks forward to the application prospect of the satellite. Chinese library classification number: V411.8; TP391.9 Document identification code: A. © 2022, Chinese Society of Astronautics.