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Thanks for the beautiful photos incl the one taken by the Fengyun 4A meteorological satellite this morning. I reshare those pics with friends.Chinese astronauts photographed the beautiful scenery of the earth from space.
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I think Xiamen University is also involved.
From China Science Daily - on the morning of 26th April, the BDS-3 IGSO-1 satellite successful fixed at its operational inclined geosynchronous orbit.China launches new BeiDou satellite
Source: Xinhua| 2019-04-21 00:03:50|Editor: ZX
China sends a new satellite of the BeiDou Navigation Satellite System (BDS) into space from the Xichang Satellite Launch Center in Xichang, southwest China's Sichuan Province, April 20, 2019. (Xinhua/Guo Wenbin)
XICHANG, April 20 (Xinhua) -- China sent a new satellite of the BeiDou Navigation Satellite System (BDS) into space from the Xichang Satellite Launch Center in Sichuan Province at 10:41 p.m. Saturday.
Launched on a Long March-3B carrier rocket, it is the 44th satellite of the BDS satellite family and the first BDS-3 satellite in inclined geosynchronous Earth orbit.
After in-orbit tests, the satellite will work with 18 other BDS-3 satellites in intermediate circular orbit and one in geosynchronous Earth orbit.
Yang Changfeng, chief designer of the BeiDou system, said that the hybrid constellation design, in which three groups of satellites at different orbital regimes work in concert, was an exclusive BDS innovation and the world's first.
It will increase the number of visible satellites in the Asian-Pacific Region, providing better service for the region, Yang said.
The launch was the 302nd flight mission for the Long March series of carrier rockets, and the 100th for the Long March-3B.
So far, a total of four BeiDou test satellites and 44 BDS satellites have been sent to preset orbits via 36 flight missions launched by Long March-3A and Long March-3B carrier rockets.
The launch on Saturday also marked the first launch of the BDS in 2019. This year, about 8-10 BDS satellites are scheduled to be launched, wrapping up launch missions of all BDS-3 satellites in medium Earth orbit.
China began to construct its navigation system, named after the Chinese term for the Big Dipper constellation, in the 1990s and started serving the Asia-Pacific Region in 2012.
According to Yang, the positioning accuracy of the system has reached 10 meters globally and five meters in the Asia-Pacific Region after the system started to provide global service at the end of last year.
The BDS-3 system is to be completed in 2020. China is also planning to finish building a high precision national comprehensive positioning, navigation, and timing (PNT) system on the basis of the BDS by 2035.
Yang noted that China is willing to share the achievements of the BDS with other countries.
The BDS has been widely used around the world, like building construction in Kuwait, precision agriculture in Myanmar, land survey and mapping in Uganda and warehousing and logistics in Thailand.
The BDS will serve the world and benefit all mankind with more powerful function and better performance, said Yang.
Yaogan-33 satellite launch failure遥感三十三号卫星发射失利
2019年05月23日 21:02:01 来源: 新华社
新华社太原5月23日电 5月23日上午,我国在太原卫星发射中心用长征四号丙运载火箭发射遥感三十三号卫星,火箭一、二级飞行正常,三级工作异常,根据测量数据监视判断,火箭三级及卫星残骸已坠落,卫星发射失利。故障排查及有关处理工作已全面展开。