【Sunburn our country heavy equipment 21】
You may not know that from September 25 to 28, 2017, when you opened WeChat, the "Earth" on the launch page was taken from just over our motherland.
This telephoto close-up of the Earth comes from the most bullish stationary orbit "Earth photographer" at present, the Fengyun IV A star.
The name "Fengyun" should not be unfamiliar to you. It is a complete set of meteorological satellite systems independently developed by the mainland. Since its development in 1970, the Fengyun series of meteorological satellites has developed rapidly from scratch, and eventually helped the mainland become one of the few countries in the world that has both polar and geostationary orbit meteorological satellites.
Renderings of the Fengyun satellite in orbit
And the Fengyun family is a big family.
Up to now, the mainland has successfully launched a total of 19 Fengyun meteorological satellites of the "two generations and four types". Among them, Fengyun-1 and Fengyun-3 belong to polar-orbiting satellites, which fly around the earth through the north and south poles and can make global observations; Fengyun-2 and Fengyun-4 are geostationary satellites, which are always relatively stationary with the ground for meteorological detection of the mainland and surrounding areas.
Weather forecasting, climate forecasting, disaster monitoring, scientific research, in many important fields, the members of the Fengyun family are extraordinary, the business covers nearly 100 industries, and can continue to provide data products and services for 118 countries and regions around the world, no wonder it is called "People's Star" and "China Star".
Every member of the Fengyun family has a special skill.
Fengyun III E Star
On July 1, 2021, accurate meteorological forecasts were provided for the celebration of the 100th anniversary of the founding of the Communist Party of China; two and a half months later, 10 minutes after the opening ceremony of the "Fourteenth Games" in Shaanxi, heavy rain was pouring... Chen Xiaojie, product assurance manager of Fengyun No. 4 meteorological satellite of the Eighth Academy of China Aerospace Science and Technology Corporation, said: "These 'minute-level' meteorological support services all rely on the Fengyun No. 4 B satellite launched on June 3, 2021, and its fast imager satellite payload can achieve high-temporal observation at 1-minute interval of 250 meters, which can provide strong support for refined monitoring and the accurate implementation of shadow operations." ”
Participating in the "FourteenTh Luck" meteorological service is also known as the "Dawn Star" Fengyun-3 E star: it observes at morning and dusk, which can make up for the gap in satellite observation data in the 6-hour assimilation window of global numerical weather prediction, and effectively improve the accuracy and timeliness of weather forecasting; the low-light observation equipment it carries can also "see" the wind and clouds on the earth in the case of insufficient light; the solar omnipotent spectrum observatory it carries can realize the omnipotent spectrum observation of the coronal layer. This is the external structure of the Sun that has the most direct impact on the Earth's environment and will provide scientists with more comprehensive information on the causes of changes in Earth's climate and weather.
Fengyun-4 satellite
Let's talk about the "photographer" of the WeChat start screen - Fengyun No. 4 A star. It imaging the mainland and the surrounding area every 5 minutes, with a maximum resolution of 500 meters; for the first time in the world, vertical detection instruments and imaging observation instruments work on the same stage, and one satellite has done the work of two satellites of other countries, which is known as the "strength responsibility" of China's meteorological satellite community.
The future of the Fengyun family can be grand!
It is reported that before 2035, the mainland will build a third-generation Fengyun meteorological satellite integrated observation system to achieve satellite-interstellar collaborative intelligent observation, and the global observation data acquisition and processing time will reach less than 1 hour. "The third generation of meteorological satellites will achieve accurate forecasting, meet the needs of all-factor and refined meteorological observation, and play a leading role in meteorological forecasting, climate prediction, atmospheric chemistry, ecological environment monitoring, and disaster prevention and mitigation." The blueprint depicted by Chen Xiaofei, the overall chief designer of the Fengyun-3 satellite of the Eighth Academy of China Aerospace Science and Technology Corporation, is exciting.
Thousands of worlds, thousands of weather, and see how the "wind and clouds" change...
(Trainee reporter Zhang Xiaohua of this newspaper, zhang lei, reporter of this newspaper)
Source: Guangming Daily (2022-03-23 01 edition)
Photo: The Eighth Academy of China Aerospace Science and Technology Corporation
Editor-in-charge: Wang Zimo
Editor: Zhang Xueyu, Sun Dai, Wang Yuanfang