What is the principle of geostationary meteorological satellite?

Geostationary meteorological satellites run synchronously with the earth's rotation.

The geostationary meteorological satellite is located about 35,800 kilometers above the equator of the earth. It runs synchronously with the earth's rotation and is relatively static. It can observe a fixed area of one third of the earth's surface and carry out continuous meteorological observation on the same target area. An artificial earth satellite for meteorological observation of the earth and its atmosphere from outer space. It is the space part of the satellite meteorological observation system.

Development of China geostationary meteorological satellite

As the first geostationary orbit meteorological satellite series developed and put into use in China, Fengyun-2 meteorological satellite began to be developed in 1986. With the successful launch of 1997 and FY-2 A and B satellites in 2000, a great deal of ground development and on-orbit test data have been accumulated. In 2004, Fengyun-2 C satellite was successfully launched, which became the most widely used operational satellite in China at that time and was listed as one of the important operational satellites of the global meteorological satellite observation network. From 2006 to 20 18, China launched five Fengyun-2 series satellites, which provoked the burden of meteorological support for major national events.

20 16, 1 16, the second generation geostationary meteorological satellite Fengyun-4 A was successfully launched. Fengyun 4A is the first geostationary meteorological satellite in the world to realize the comprehensive observation of "multispectral 2D imaging+hyperspectral 3D detection+ultra-narrow-band lightning imaging" by a single satellite. The successful launch of A-Star has upgraded China's geostationary meteorological satellite from Fengyun-2 to Fengyun-4, and changed China's meteorological satellite technology from following, running side by side and leading locally.

Today, Fengyun-4 B star has been successfully launched. On the basis of inheriting Star A, Star B improved its original load performance and added a fast imager, which realized all-day observation of geostationary orbit for the first time in the world, with a spatial resolution of 250 meters. Through long-line detector and two-dimensional flexible scanning imaging, higher resolution, more flexible and faster scanning imaging of specific areas on the ground is realized, which greatly improves the observation ability of some short-term and impending weather phenomena with smaller scale and shorter duration in China.