Technical characteristics of Fengyun meteorological satellite

Generally speaking, on some basic and key foundations, China still lags behind the international advanced level, but Fengyun-2 satellite has the characteristics of China, and what it has done in many places has attracted worldwide attention. Therefore, it is well-deserved to win the first prize of national scientific and technological progress.

To sum up, there are five aspects that can reflect the technical characteristics of Fengyun-2:

First, advanced geostationary orbit observation technology. The geostationary orbit is 35,800 kilometers away from the Earth, so it is technically quite difficult to obtain high-definition images at such a distance. Therefore, its first technical feature is a vehicle-mounted observer, which has five channels, that is, it can obtain five pictures at the same time.

Second, the overall design technology of the satellite. Fengyun-2 has a good picture quality. In order to ensure high-quality images, a lot of work has been done in satellite design, including how to provide energy on the satellite, how to control the attitude of the satellite, and how to ensure the data processing and distribution on the satellite.

Thirdly, satellite-ground integration realizes high-precision image positioning. Ordinary netizens may not know much about this. It is difficult for remote sensing satellites to accurately locate images of the earth, especially stationary satellites. So far, we have achieved the "pixel level" of image positioning accuracy. The advantages of accurate positioning are: 1. The estimation of the disaster location will reduce the error. 2. It will keep the continuous animation stable.

Fourthly, the biggest highlight of Fengyun-2 is that the quantitative application we have done is quite unique, and some application technologies are also recognized by international peers. A variety of quantitative products have been formed in the processing of Fengyun-2 observation data, and various atmospheric physical parameters can be retrieved by using such observation data. Such as wind field, cloud parameters and precipitation information.

Fifth, the satellite-ground system realizes stable business operation. Meteorological satellites need continuous observation. Once the satellite stops working, it will have a serious impact on weather forecast and disaster monitoring. The ground system of Fengyun-2 satellite has realized continuous operation 24 hours a day, 365 days a year.